./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/parallel-misc-2.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 c558e00c0dd9b5f4cf40cba6e03e276a996696c71c282947f4c8d13390dc25bf --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:43:45,083 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:43:45,142 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:43:45,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:43:45,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:43:45,190 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:43:45,191 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:43:45,191 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:43:45,191 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:43:45,192 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:43:45,193 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:43:45,193 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:43:45,194 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:43:45,195 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:43:45,199 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:43:45,200 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:43:45,200 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:43:45,200 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:43:45,200 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:43:45,201 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:43:45,201 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:43:45,202 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:43:45,202 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:43:45,202 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:43:45,202 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:43:45,203 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:43:45,203 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:43:45,203 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:43:45,203 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:43:45,204 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:43:45,204 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:43:45,204 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:43:45,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:43:45,205 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:43:45,205 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:43:45,208 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:43:45,208 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:43:45,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:43:45,208 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:43:45,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:43:45,209 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:43:45,209 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:43:45,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c558e00c0dd9b5f4cf40cba6e03e276a996696c71c282947f4c8d13390dc25bf [2024-11-09 02:43:45,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:43:45,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:43:45,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:43:45,484 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:43:45,485 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:43:45,486 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2024-11-09 02:43:46,967 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:43:47,185 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:43:47,186 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2024-11-09 02:43:47,196 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ed93b2ef/8440be9fac69480a9edc42ae21a09a43/FLAG9957a23ae [2024-11-09 02:43:47,208 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ed93b2ef/8440be9fac69480a9edc42ae21a09a43 [2024-11-09 02:43:47,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:43:47,211 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:43:47,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:43:47,213 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:43:47,218 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:43:47,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:43:47" (1/1) ... [2024-11-09 02:43:47,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ddf177b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:47, skipping insertion in model container [2024-11-09 02:43:47,220 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:43:47" (1/1) ... [2024-11-09 02:43:47,245 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:43:47,472 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/parallel-misc-2.wvr.c[2249,2262] [2024-11-09 02:43:47,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:43:47,487 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:43:47,504 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/parallel-misc-2.wvr.c[2249,2262] [2024-11-09 02:43:47,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:43:47,522 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:43:47,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:47 WrapperNode [2024-11-09 02:43:47,523 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:43:47,524 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:43:47,526 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:43:47,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:43:47,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:47" (1/1) ... [2024-11-09 02:43:47,545 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:47" (1/1) ... [2024-11-09 02:43:47,562 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2024-11-09 02:43:47,563 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:43:47,563 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:43:47,564 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:43:47,564 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:43:47,574 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:47" (1/1) ... [2024-11-09 02:43:47,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:47" (1/1) ... [2024-11-09 02:43:47,577 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:47" (1/1) ... [2024-11-09 02:43:47,589 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 02:43:47,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:47" (1/1) ... [2024-11-09 02:43:47,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:47" (1/1) ... [2024-11-09 02:43:47,594 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:47" (1/1) ... [2024-11-09 02:43:47,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:47" (1/1) ... [2024-11-09 02:43:47,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:47" (1/1) ... [2024-11-09 02:43:47,601 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:47" (1/1) ... [2024-11-09 02:43:47,607 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:43:47,608 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:43:47,608 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:43:47,608 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:43:47,609 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:47" (1/1) ... [2024-11-09 02:43:47,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:43:47,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:47,646 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) [2024-11-09 02:43:47,650 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 [2024-11-09 02:43:47,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:43:47,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:43:47,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:43:47,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:43:47,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:43:47,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:43:47,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:43:47,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:43:47,701 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:43:47,795 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:43:47,796 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:43:48,030 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:43:48,030 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:43:48,187 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:43:48,187 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 02:43:48,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:43:48 BoogieIcfgContainer [2024-11-09 02:43:48,188 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:43:48,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:43:48,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:43:48,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:43:48,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:43:47" (1/3) ... [2024-11-09 02:43:48,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb563f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:43:48, skipping insertion in model container [2024-11-09 02:43:48,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:43:47" (2/3) ... [2024-11-09 02:43:48,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb563f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:43:48, skipping insertion in model container [2024-11-09 02:43:48,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:43:48" (3/3) ... [2024-11-09 02:43:48,201 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2024-11-09 02:43:48,214 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:43:48,215 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:43:48,215 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:43:48,279 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 02:43:48,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 32 transitions, 78 flow [2024-11-09 02:43:48,356 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-09 02:43:48,356 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:43:48,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 4/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 55 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-09 02:43:48,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 32 transitions, 78 flow [2024-11-09 02:43:48,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 29 transitions, 70 flow [2024-11-09 02:43:48,375 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:43:48,381 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;@56a93f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:43:48,381 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-09 02:43:48,397 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:43:48,398 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-09 02:43:48,398 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:43:48,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:48,399 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:48,401 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:48,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:48,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1272295163, now seen corresponding path program 1 times [2024-11-09 02:43:48,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:48,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246544418] [2024-11-09 02:43:48,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:48,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:48,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:48,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246544418] [2024-11-09 02:43:48,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246544418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:43:48,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:43:48,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:43:48,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980759808] [2024-11-09 02:43:48,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:43:48,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:43:48,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:48,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:43:48,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:43:48,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-09 02:43:48,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2024-11-09 02:43:48,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:48,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-09 02:43:48,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:48,959 INFO L124 PetriNetUnfolderBase]: 146/286 cut-off events. [2024-11-09 02:43:48,960 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-09 02:43:48,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 286 events. 146/286 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1137 event pairs, 12 based on Foata normal form. 1/254 useless extension candidates. Maximal degree in co-relation 458. Up to 186 conditions per place. [2024-11-09 02:43:48,970 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 21 selfloop transitions, 7 changer transitions 1/40 dead transitions. [2024-11-09 02:43:48,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 159 flow [2024-11-09 02:43:48,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:43:48,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:43:48,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-09 02:43:48,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-09 02:43:48,983 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 70 flow. Second operand 3 states and 69 transitions. [2024-11-09 02:43:48,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 159 flow [2024-11-09 02:43:48,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 145 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 02:43:48,988 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 101 flow [2024-11-09 02:43:48,989 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2024-11-09 02:43:48,992 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2024-11-09 02:43:48,993 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 101 flow [2024-11-09 02:43:48,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2024-11-09 02:43:48,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:48,993 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:48,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:43:48,994 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:48,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:48,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2086242437, now seen corresponding path program 1 times [2024-11-09 02:43:48,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:48,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652223149] [2024-11-09 02:43:48,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:48,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:49,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:49,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652223149] [2024-11-09 02:43:49,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652223149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:43:49,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:43:49,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:43:49,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996601189] [2024-11-09 02:43:49,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:43:49,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:43:49,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:49,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:43:49,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:43:49,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-09 02:43:49,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-11-09 02:43:49,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:49,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-09 02:43:49,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:49,353 INFO L124 PetriNetUnfolderBase]: 191/376 cut-off events. [2024-11-09 02:43:49,355 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-11-09 02:43:49,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 376 events. 191/376 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1753 event pairs, 20 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 276. Up to 143 conditions per place. [2024-11-09 02:43:49,362 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 10 changer transitions 5/65 dead transitions. [2024-11-09 02:43:49,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 65 transitions, 290 flow [2024-11-09 02:43:49,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:43:49,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:43:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-11-09 02:43:49,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7375 [2024-11-09 02:43:49,365 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 101 flow. Second operand 5 states and 118 transitions. [2024-11-09 02:43:49,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 65 transitions, 290 flow [2024-11-09 02:43:49,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 65 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:43:49,369 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 155 flow [2024-11-09 02:43:49,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2024-11-09 02:43:49,370 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2024-11-09 02:43:49,370 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 155 flow [2024-11-09 02:43:49,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-11-09 02:43:49,371 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:49,371 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:49,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:43:49,372 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:49,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:49,373 INFO L85 PathProgramCache]: Analyzing trace with hash 414343881, now seen corresponding path program 2 times [2024-11-09 02:43:49,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:49,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27739888] [2024-11-09 02:43:49,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:49,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:49,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:49,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27739888] [2024-11-09 02:43:49,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27739888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:43:49,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:43:49,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:43:49,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543988827] [2024-11-09 02:43:49,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:43:49,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:43:49,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:49,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:43:49,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:43:49,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-09 02:43:49,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-11-09 02:43:49,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:49,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-09 02:43:49,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:49,665 INFO L124 PetriNetUnfolderBase]: 185/391 cut-off events. [2024-11-09 02:43:49,666 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2024-11-09 02:43:49,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 391 events. 185/391 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1863 event pairs, 12 based on Foata normal form. 8/367 useless extension candidates. Maximal degree in co-relation 345. Up to 88 conditions per place. [2024-11-09 02:43:49,674 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 35 selfloop transitions, 12 changer transitions 4/65 dead transitions. [2024-11-09 02:43:49,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 65 transitions, 348 flow [2024-11-09 02:43:49,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:43:49,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:43:49,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-11-09 02:43:49,677 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-09 02:43:49,677 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 155 flow. Second operand 5 states and 115 transitions. [2024-11-09 02:43:49,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 65 transitions, 348 flow [2024-11-09 02:43:49,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 65 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:43:49,684 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 241 flow [2024-11-09 02:43:49,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=241, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2024-11-09 02:43:49,685 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2024-11-09 02:43:49,685 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 241 flow [2024-11-09 02:43:49,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-11-09 02:43:49,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:49,687 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] [2024-11-09 02:43:49,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:43:49,687 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:49,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:49,688 INFO L85 PathProgramCache]: Analyzing trace with hash -844618454, now seen corresponding path program 1 times [2024-11-09 02:43:49,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:49,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773636180] [2024-11-09 02:43:49,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:49,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:49,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:49,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773636180] [2024-11-09 02:43:49,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773636180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:43:49,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:43:49,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:43:49,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096576609] [2024-11-09 02:43:49,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:43:49,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:43:49,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:49,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:43:49,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:43:49,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-09 02:43:49,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-09 02:43:49,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:49,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-09 02:43:49,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:50,042 INFO L124 PetriNetUnfolderBase]: 182/379 cut-off events. [2024-11-09 02:43:50,042 INFO L125 PetriNetUnfolderBase]: For 588/588 co-relation queries the response was YES. [2024-11-09 02:43:50,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 379 events. 182/379 cut-off events. For 588/588 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1837 event pairs, 17 based on Foata normal form. 2/347 useless extension candidates. Maximal degree in co-relation 572. Up to 163 conditions per place. [2024-11-09 02:43:50,047 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 41 selfloop transitions, 9 changer transitions 2/66 dead transitions. [2024-11-09 02:43:50,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 66 transitions, 436 flow [2024-11-09 02:43:50,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:43:50,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:43:50,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-11-09 02:43:50,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-09 02:43:50,050 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 241 flow. Second operand 5 states and 112 transitions. [2024-11-09 02:43:50,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 66 transitions, 436 flow [2024-11-09 02:43:50,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 66 transitions, 432 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-09 02:43:50,060 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 292 flow [2024-11-09 02:43:50,060 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-11-09 02:43:50,061 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 19 predicate places. [2024-11-09 02:43:50,062 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 292 flow [2024-11-09 02:43:50,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-09 02:43:50,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:50,063 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] [2024-11-09 02:43:50,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:43:50,063 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:50,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:50,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1900226788, now seen corresponding path program 2 times [2024-11-09 02:43:50,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:50,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113644697] [2024-11-09 02:43:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:50,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:50,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:50,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113644697] [2024-11-09 02:43:50,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113644697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:43:50,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:43:50,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:43:50,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757005414] [2024-11-09 02:43:50,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:43:50,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:43:50,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:50,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:43:50,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:43:50,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-09 02:43:50,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-09 02:43:50,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:50,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-09 02:43:50,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:50,252 INFO L124 PetriNetUnfolderBase]: 168/379 cut-off events. [2024-11-09 02:43:50,252 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2024-11-09 02:43:50,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1162 conditions, 379 events. 168/379 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1730 event pairs, 6 based on Foata normal form. 17/361 useless extension candidates. Maximal degree in co-relation 751. Up to 99 conditions per place. [2024-11-09 02:43:50,257 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 43 selfloop transitions, 12 changer transitions 1/70 dead transitions. [2024-11-09 02:43:50,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 512 flow [2024-11-09 02:43:50,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:43:50,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:43:50,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-11-09 02:43:50,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.70625 [2024-11-09 02:43:50,258 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 292 flow. Second operand 5 states and 113 transitions. [2024-11-09 02:43:50,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 512 flow [2024-11-09 02:43:50,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 496 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 02:43:50,264 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 355 flow [2024-11-09 02:43:50,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-09 02:43:50,265 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2024-11-09 02:43:50,266 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 355 flow [2024-11-09 02:43:50,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-09 02:43:50,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:50,266 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] [2024-11-09 02:43:50,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:43:50,267 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:50,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:50,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1926277624, now seen corresponding path program 1 times [2024-11-09 02:43:50,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:50,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790181723] [2024-11-09 02:43:50,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:50,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:50,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:50,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:50,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790181723] [2024-11-09 02:43:50,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790181723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:50,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295137228] [2024-11-09 02:43:50,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:50,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:50,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:50,497 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) [2024-11-09 02:43:50,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:43:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:50,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 02:43:50,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:50,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:51,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:51,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295137228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:51,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:51,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-09 02:43:51,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606964720] [2024-11-09 02:43:51,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:51,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:43:51,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:51,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:43:51,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:43:51,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-09 02:43:51,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 355 flow. Second operand has 12 states, 12 states have (on average 14.833333333333334) internal successors, (178), 12 states have internal predecessors, (178), 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) [2024-11-09 02:43:51,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:51,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-09 02:43:51,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:51,776 INFO L124 PetriNetUnfolderBase]: 459/907 cut-off events. [2024-11-09 02:43:51,776 INFO L125 PetriNetUnfolderBase]: For 2614/2614 co-relation queries the response was YES. [2024-11-09 02:43:51,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3200 conditions, 907 events. 459/907 cut-off events. For 2614/2614 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4403 event pairs, 4 based on Foata normal form. 46/883 useless extension candidates. Maximal degree in co-relation 1278. Up to 254 conditions per place. [2024-11-09 02:43:51,787 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 105 selfloop transitions, 51 changer transitions 0/165 dead transitions. [2024-11-09 02:43:51,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 165 transitions, 1356 flow [2024-11-09 02:43:51,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 02:43:51,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 02:43:51,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 355 transitions. [2024-11-09 02:43:51,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5838815789473685 [2024-11-09 02:43:51,790 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 355 flow. Second operand 19 states and 355 transitions. [2024-11-09 02:43:51,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 165 transitions, 1356 flow [2024-11-09 02:43:51,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 165 transitions, 1317 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-11-09 02:43:51,800 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 848 flow [2024-11-09 02:43:51,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=848, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2024-11-09 02:43:51,801 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 52 predicate places. [2024-11-09 02:43:51,801 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 848 flow [2024-11-09 02:43:51,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.833333333333334) internal successors, (178), 12 states have internal predecessors, (178), 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) [2024-11-09 02:43:51,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:51,802 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:51,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 02:43:52,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 02:43:52,003 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:52,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:52,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1028412545, now seen corresponding path program 2 times [2024-11-09 02:43:52,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:52,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610711710] [2024-11-09 02:43:52,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:52,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:52,160 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:43:52,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:52,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610711710] [2024-11-09 02:43:52,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610711710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:43:52,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:43:52,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:43:52,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803337481] [2024-11-09 02:43:52,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:43:52,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:43:52,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:52,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:43:52,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:43:52,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-09 02:43:52,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 848 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-09 02:43:52,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:52,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-09 02:43:52,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:52,393 INFO L124 PetriNetUnfolderBase]: 591/1365 cut-off events. [2024-11-09 02:43:52,393 INFO L125 PetriNetUnfolderBase]: For 7454/7546 co-relation queries the response was YES. [2024-11-09 02:43:52,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5644 conditions, 1365 events. 591/1365 cut-off events. For 7454/7546 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8517 event pairs, 141 based on Foata normal form. 16/1209 useless extension candidates. Maximal degree in co-relation 4945. Up to 299 conditions per place. [2024-11-09 02:43:52,406 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 108 selfloop transitions, 21 changer transitions 0/161 dead transitions. [2024-11-09 02:43:52,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 161 transitions, 1994 flow [2024-11-09 02:43:52,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:43:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:43:52,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-09 02:43:52,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.765625 [2024-11-09 02:43:52,408 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 848 flow. Second operand 4 states and 98 transitions. [2024-11-09 02:43:52,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 161 transitions, 1994 flow [2024-11-09 02:43:52,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 161 transitions, 1855 flow, removed 61 selfloop flow, removed 4 redundant places. [2024-11-09 02:43:52,429 INFO L231 Difference]: Finished difference. Result has 86 places, 102 transitions, 1108 flow [2024-11-09 02:43:52,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1108, PETRI_PLACES=86, PETRI_TRANSITIONS=102} [2024-11-09 02:43:52,431 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 54 predicate places. [2024-11-09 02:43:52,431 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 102 transitions, 1108 flow [2024-11-09 02:43:52,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-09 02:43:52,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:52,432 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:52,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:43:52,432 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:52,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:52,433 INFO L85 PathProgramCache]: Analyzing trace with hash -212638674, now seen corresponding path program 1 times [2024-11-09 02:43:52,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:52,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127251653] [2024-11-09 02:43:52,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:52,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:52,572 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:52,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:52,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127251653] [2024-11-09 02:43:52,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127251653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:43:52,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:43:52,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:43:52,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135667332] [2024-11-09 02:43:52,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:43:52,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:43:52,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:52,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:43:52,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:43:52,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-09 02:43:52,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 102 transitions, 1108 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-09 02:43:52,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:52,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-09 02:43:52,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:53,026 INFO L124 PetriNetUnfolderBase]: 1681/3415 cut-off events. [2024-11-09 02:43:53,027 INFO L125 PetriNetUnfolderBase]: For 19688/19735 co-relation queries the response was YES. [2024-11-09 02:43:53,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14658 conditions, 3415 events. 1681/3415 cut-off events. For 19688/19735 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 25593 event pairs, 412 based on Foata normal form. 3/3050 useless extension candidates. Maximal degree in co-relation 12642. Up to 1045 conditions per place. [2024-11-09 02:43:53,068 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 149 selfloop transitions, 32 changer transitions 0/214 dead transitions. [2024-11-09 02:43:53,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 214 transitions, 2862 flow [2024-11-09 02:43:53,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:43:53,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:43:53,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-11-09 02:43:53,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7578125 [2024-11-09 02:43:53,074 INFO L175 Difference]: Start difference. First operand has 86 places, 102 transitions, 1108 flow. Second operand 4 states and 97 transitions. [2024-11-09 02:43:53,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 214 transitions, 2862 flow [2024-11-09 02:43:53,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 214 transitions, 2849 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-09 02:43:53,143 INFO L231 Difference]: Finished difference. Result has 91 places, 132 transitions, 1614 flow [2024-11-09 02:43:53,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1614, PETRI_PLACES=91, PETRI_TRANSITIONS=132} [2024-11-09 02:43:53,145 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2024-11-09 02:43:53,145 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 132 transitions, 1614 flow [2024-11-09 02:43:53,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-09 02:43:53,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:53,145 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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] [2024-11-09 02:43:53,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:43:53,146 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:53,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:53,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1003239952, now seen corresponding path program 1 times [2024-11-09 02:43:53,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:53,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353611587] [2024-11-09 02:43:53,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:53,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:53,397 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:53,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:53,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353611587] [2024-11-09 02:43:53,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353611587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:53,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971687955] [2024-11-09 02:43:53,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:53,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:53,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:53,401 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) [2024-11-09 02:43:53,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:43:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:53,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 02:43:53,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:53,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:53,651 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:53,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971687955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:53,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:53,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-09 02:43:53,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323531620] [2024-11-09 02:43:53,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:53,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:43:53,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:53,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:43:53,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:43:53,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-09 02:43:53,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 132 transitions, 1614 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2024-11-09 02:43:53,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:53,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-09 02:43:53,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:54,866 INFO L124 PetriNetUnfolderBase]: 3484/7695 cut-off events. [2024-11-09 02:43:54,866 INFO L125 PetriNetUnfolderBase]: For 52551/52682 co-relation queries the response was YES. [2024-11-09 02:43:54,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36198 conditions, 7695 events. 3484/7695 cut-off events. For 52551/52682 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 66159 event pairs, 462 based on Foata normal form. 29/7528 useless extension candidates. Maximal degree in co-relation 30662. Up to 2546 conditions per place. [2024-11-09 02:43:55,045 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 323 selfloop transitions, 23 changer transitions 1/378 dead transitions. [2024-11-09 02:43:55,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 378 transitions, 5534 flow [2024-11-09 02:43:55,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:43:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:43:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-11-09 02:43:55,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2024-11-09 02:43:55,048 INFO L175 Difference]: Start difference. First operand has 91 places, 132 transitions, 1614 flow. Second operand 6 states and 152 transitions. [2024-11-09 02:43:55,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 378 transitions, 5534 flow [2024-11-09 02:43:55,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 378 transitions, 5534 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:43:55,189 INFO L231 Difference]: Finished difference. Result has 97 places, 148 transitions, 1748 flow [2024-11-09 02:43:55,190 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1748, PETRI_PLACES=97, PETRI_TRANSITIONS=148} [2024-11-09 02:43:55,190 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 65 predicate places. [2024-11-09 02:43:55,191 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 148 transitions, 1748 flow [2024-11-09 02:43:55,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2024-11-09 02:43:55,191 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:55,191 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:55,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:43:55,395 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,SelfDestructingSolverStorable8 [2024-11-09 02:43:55,396 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:55,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:55,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1867921802, now seen corresponding path program 1 times [2024-11-09 02:43:55,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:55,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144309399] [2024-11-09 02:43:55,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:55,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:55,507 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:43:55,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:55,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144309399] [2024-11-09 02:43:55,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144309399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:43:55,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:43:55,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:43:55,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281420796] [2024-11-09 02:43:55,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:43:55,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:43:55,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:55,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:43:55,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:43:55,515 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-09 02:43:55,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 148 transitions, 1748 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-09 02:43:55,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:55,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-09 02:43:55,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:56,813 INFO L124 PetriNetUnfolderBase]: 3430/7467 cut-off events. [2024-11-09 02:43:56,813 INFO L125 PetriNetUnfolderBase]: For 57199/57274 co-relation queries the response was YES. [2024-11-09 02:43:56,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36503 conditions, 7467 events. 3430/7467 cut-off events. For 57199/57274 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 63994 event pairs, 665 based on Foata normal form. 109/7298 useless extension candidates. Maximal degree in co-relation 31108. Up to 2436 conditions per place. [2024-11-09 02:43:56,864 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 136 selfloop transitions, 32 changer transitions 0/209 dead transitions. [2024-11-09 02:43:56,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 209 transitions, 2726 flow [2024-11-09 02:43:56,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:43:56,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:43:56,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-09 02:43:56,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7265625 [2024-11-09 02:43:56,866 INFO L175 Difference]: Start difference. First operand has 97 places, 148 transitions, 1748 flow. Second operand 4 states and 93 transitions. [2024-11-09 02:43:56,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 209 transitions, 2726 flow [2024-11-09 02:43:57,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 209 transitions, 2662 flow, removed 32 selfloop flow, removed 0 redundant places. [2024-11-09 02:43:57,003 INFO L231 Difference]: Finished difference. Result has 102 places, 137 transitions, 1656 flow [2024-11-09 02:43:57,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1656, PETRI_PLACES=102, PETRI_TRANSITIONS=137} [2024-11-09 02:43:57,004 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 70 predicate places. [2024-11-09 02:43:57,004 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 137 transitions, 1656 flow [2024-11-09 02:43:57,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-09 02:43:57,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:57,005 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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] [2024-11-09 02:43:57,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 02:43:57,005 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:57,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:57,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1589292896, now seen corresponding path program 2 times [2024-11-09 02:43:57,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:57,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157557739] [2024-11-09 02:43:57,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:57,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:57,196 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:57,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:57,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157557739] [2024-11-09 02:43:57,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157557739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:57,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3541720] [2024-11-09 02:43:57,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:43:57,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:57,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:57,200 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) [2024-11-09 02:43:57,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:43:57,261 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:43:57,261 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:57,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 02:43:57,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:57,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:57,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:57,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:57,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3541720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:57,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:57,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-09 02:43:57,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596843634] [2024-11-09 02:43:57,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:57,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:43:57,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:57,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:43:57,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:43:57,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-09 02:43:57,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 137 transitions, 1656 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2024-11-09 02:43:57,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:57,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-09 02:43:57,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:58,630 INFO L124 PetriNetUnfolderBase]: 3846/8771 cut-off events. [2024-11-09 02:43:58,631 INFO L125 PetriNetUnfolderBase]: For 72599/72734 co-relation queries the response was YES. [2024-11-09 02:43:58,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44445 conditions, 8771 events. 3846/8771 cut-off events. For 72599/72734 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 79159 event pairs, 528 based on Foata normal form. 41/8652 useless extension candidates. Maximal degree in co-relation 37809. Up to 4682 conditions per place. [2024-11-09 02:43:58,723 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 265 selfloop transitions, 26 changer transitions 1/324 dead transitions. [2024-11-09 02:43:58,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 324 transitions, 4766 flow [2024-11-09 02:43:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:43:58,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:43:58,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-11-09 02:43:58,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7552083333333334 [2024-11-09 02:43:58,725 INFO L175 Difference]: Start difference. First operand has 102 places, 137 transitions, 1656 flow. Second operand 6 states and 145 transitions. [2024-11-09 02:43:58,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 324 transitions, 4766 flow [2024-11-09 02:43:58,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 324 transitions, 4766 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:43:58,937 INFO L231 Difference]: Finished difference. Result has 109 places, 155 transitions, 1839 flow [2024-11-09 02:43:58,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1656, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1839, PETRI_PLACES=109, PETRI_TRANSITIONS=155} [2024-11-09 02:43:58,938 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 77 predicate places. [2024-11-09 02:43:58,938 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 155 transitions, 1839 flow [2024-11-09 02:43:58,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2024-11-09 02:43:58,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:58,939 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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] [2024-11-09 02:43:58,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 02:43:59,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:59,144 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:59,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:59,145 INFO L85 PathProgramCache]: Analyzing trace with hash 614024238, now seen corresponding path program 3 times [2024-11-09 02:43:59,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:59,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490392589] [2024-11-09 02:43:59,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:59,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:43:59,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:59,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490392589] [2024-11-09 02:43:59,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490392589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:59,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817371010] [2024-11-09 02:43:59,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:43:59,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:59,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:59,427 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) [2024-11-09 02:43:59,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:43:59,501 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 02:43:59,502 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:59,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 02:43:59,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:43:59,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:43:59,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817371010] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:59,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:59,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-09 02:43:59,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329655839] [2024-11-09 02:43:59,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:59,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:43:59,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:59,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:43:59,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:43:59,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-09 02:43:59,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 155 transitions, 1839 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2024-11-09 02:43:59,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:59,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-09 02:43:59,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:01,401 INFO L124 PetriNetUnfolderBase]: 5647/12740 cut-off events. [2024-11-09 02:44:01,401 INFO L125 PetriNetUnfolderBase]: For 112404/112684 co-relation queries the response was YES. [2024-11-09 02:44:01,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67363 conditions, 12740 events. 5647/12740 cut-off events. For 112404/112684 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 119962 event pairs, 758 based on Foata normal form. 80/12527 useless extension candidates. Maximal degree in co-relation 57651. Up to 4975 conditions per place. [2024-11-09 02:44:01,539 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 311 selfloop transitions, 48 changer transitions 1/392 dead transitions. [2024-11-09 02:44:01,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 392 transitions, 5811 flow [2024-11-09 02:44:01,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:44:01,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:44:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-11-09 02:44:01,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7760416666666666 [2024-11-09 02:44:01,542 INFO L175 Difference]: Start difference. First operand has 109 places, 155 transitions, 1839 flow. Second operand 6 states and 149 transitions. [2024-11-09 02:44:01,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 392 transitions, 5811 flow [2024-11-09 02:44:01,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 392 transitions, 5797 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-11-09 02:44:01,903 INFO L231 Difference]: Finished difference. Result has 118 places, 183 transitions, 2218 flow [2024-11-09 02:44:01,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1829, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2218, PETRI_PLACES=118, PETRI_TRANSITIONS=183} [2024-11-09 02:44:01,904 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 86 predicate places. [2024-11-09 02:44:01,904 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 183 transitions, 2218 flow [2024-11-09 02:44:01,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2024-11-09 02:44:01,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:01,904 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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] [2024-11-09 02:44:01,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 02:44:02,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:44:02,105 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:44:02,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:02,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1719315824, now seen corresponding path program 4 times [2024-11-09 02:44:02,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:02,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946795847] [2024-11-09 02:44:02,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:02,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:44:02,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:02,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946795847] [2024-11-09 02:44:02,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946795847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:44:02,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026532563] [2024-11-09 02:44:02,311 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:44:02,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:44:02,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:44:02,313 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) [2024-11-09 02:44:02,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 02:44:02,386 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:44:02,386 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:44:02,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 02:44:02,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:44:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:44:02,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:44:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:44:02,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026532563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:44:02,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:44:02,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-09 02:44:02,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713378153] [2024-11-09 02:44:02,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:44:02,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:44:02,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:02,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:44:02,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:44:02,746 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-09 02:44:02,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 183 transitions, 2218 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2024-11-09 02:44:02,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:02,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-09 02:44:02,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:05,296 INFO L124 PetriNetUnfolderBase]: 7967/18199 cut-off events. [2024-11-09 02:44:05,296 INFO L125 PetriNetUnfolderBase]: For 170639/171254 co-relation queries the response was YES. [2024-11-09 02:44:05,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99929 conditions, 18199 events. 7967/18199 cut-off events. For 170639/171254 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 180916 event pairs, 918 based on Foata normal form. 136/18067 useless extension candidates. Maximal degree in co-relation 84496. Up to 8503 conditions per place. [2024-11-09 02:44:05,457 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 374 selfloop transitions, 38 changer transitions 1/445 dead transitions. [2024-11-09 02:44:05,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 445 transitions, 6700 flow [2024-11-09 02:44:05,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:44:05,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:44:05,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-11-09 02:44:05,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2024-11-09 02:44:05,458 INFO L175 Difference]: Start difference. First operand has 118 places, 183 transitions, 2218 flow. Second operand 6 states and 152 transitions. [2024-11-09 02:44:05,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 445 transitions, 6700 flow [2024-11-09 02:44:06,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 445 transitions, 6676 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-11-09 02:44:06,078 INFO L231 Difference]: Finished difference. Result has 126 places, 214 transitions, 2614 flow [2024-11-09 02:44:06,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2614, PETRI_PLACES=126, PETRI_TRANSITIONS=214} [2024-11-09 02:44:06,079 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 94 predicate places. [2024-11-09 02:44:06,079 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 214 transitions, 2614 flow [2024-11-09 02:44:06,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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) [2024-11-09 02:44:06,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:06,079 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:44:06,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 02:44:06,280 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,SelfDestructingSolverStorable12 [2024-11-09 02:44:06,280 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:44:06,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:06,281 INFO L85 PathProgramCache]: Analyzing trace with hash 651385897, now seen corresponding path program 1 times [2024-11-09 02:44:06,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:06,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121505503] [2024-11-09 02:44:06,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:06,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:44:06,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:06,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121505503] [2024-11-09 02:44:06,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121505503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:44:06,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:44:06,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:44:06,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912425476] [2024-11-09 02:44:06,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:44:06,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:44:06,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:06,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:44:06,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:44:06,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-09 02:44:06,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 214 transitions, 2614 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-09 02:44:06,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:06,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-09 02:44:06,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:07,631 INFO L124 PetriNetUnfolderBase]: 3162/7466 cut-off events. [2024-11-09 02:44:07,631 INFO L125 PetriNetUnfolderBase]: For 84945/85689 co-relation queries the response was YES. [2024-11-09 02:44:07,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43200 conditions, 7466 events. 3162/7466 cut-off events. For 84945/85689 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 66994 event pairs, 401 based on Foata normal form. 256/7543 useless extension candidates. Maximal degree in co-relation 38075. Up to 2305 conditions per place. [2024-11-09 02:44:07,680 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 160 selfloop transitions, 21 changer transitions 0/249 dead transitions. [2024-11-09 02:44:07,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 249 transitions, 3598 flow [2024-11-09 02:44:07,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:44:07,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:44:07,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-09 02:44:07,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7265625 [2024-11-09 02:44:07,681 INFO L175 Difference]: Start difference. First operand has 126 places, 214 transitions, 2614 flow. Second operand 4 states and 93 transitions. [2024-11-09 02:44:07,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 249 transitions, 3598 flow [2024-11-09 02:44:07,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 249 transitions, 3564 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-09 02:44:07,803 INFO L231 Difference]: Finished difference. Result has 130 places, 186 transitions, 2357 flow [2024-11-09 02:44:07,803 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2286, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2357, PETRI_PLACES=130, PETRI_TRANSITIONS=186} [2024-11-09 02:44:07,804 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 98 predicate places. [2024-11-09 02:44:07,804 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 186 transitions, 2357 flow [2024-11-09 02:44:07,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-09 02:44:07,804 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:07,804 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:44:07,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 02:44:07,805 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:44:07,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:07,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1358227114, now seen corresponding path program 5 times [2024-11-09 02:44:07,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:07,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42493495] [2024-11-09 02:44:07,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:07,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:08,129 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:08,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:08,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42493495] [2024-11-09 02:44:08,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42493495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:44:08,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967172937] [2024-11-09 02:44:08,130 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:44:08,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:44:08,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:44:08,132 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) [2024-11-09 02:44:08,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 02:44:08,255 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-09 02:44:08,255 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:44:08,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:44:08,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:44:08,479 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:08,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:44:08,817 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:08,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967172937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:44:08,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:44:08,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2024-11-09 02:44:08,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45777700] [2024-11-09 02:44:08,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:44:08,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:44:08,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:08,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:44:08,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:44:08,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2024-11-09 02:44:08,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 186 transitions, 2357 flow. Second operand has 19 states, 19 states have (on average 17.05263157894737) internal successors, (324), 19 states have internal predecessors, (324), 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) [2024-11-09 02:44:08,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:08,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2024-11-09 02:44:08,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:18,669 INFO L124 PetriNetUnfolderBase]: 7103/15946 cut-off events. [2024-11-09 02:44:18,669 INFO L125 PetriNetUnfolderBase]: For 196994/198328 co-relation queries the response was YES. [2024-11-09 02:44:18,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93429 conditions, 15946 events. 7103/15946 cut-off events. For 196994/198328 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 152976 event pairs, 32 based on Foata normal form. 1096/17015 useless extension candidates. Maximal degree in co-relation 83873. Up to 2941 conditions per place. [2024-11-09 02:44:19,040 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 640 selfloop transitions, 207 changer transitions 0/899 dead transitions. [2024-11-09 02:44:19,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 899 transitions, 12084 flow [2024-11-09 02:44:19,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-09 02:44:19,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-09 02:44:19,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 705 transitions. [2024-11-09 02:44:19,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6676136363636364 [2024-11-09 02:44:19,044 INFO L175 Difference]: Start difference. First operand has 130 places, 186 transitions, 2357 flow. Second operand 33 states and 705 transitions. [2024-11-09 02:44:19,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 899 transitions, 12084 flow [2024-11-09 02:44:19,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 899 transitions, 12084 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:44:19,401 INFO L231 Difference]: Finished difference. Result has 180 places, 356 transitions, 6108 flow [2024-11-09 02:44:19,401 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=6108, PETRI_PLACES=180, PETRI_TRANSITIONS=356} [2024-11-09 02:44:19,402 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 148 predicate places. [2024-11-09 02:44:19,402 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 356 transitions, 6108 flow [2024-11-09 02:44:19,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.05263157894737) internal successors, (324), 19 states have internal predecessors, (324), 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) [2024-11-09 02:44:19,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:44:19,403 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:44:19,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 02:44:19,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 02:44:19,603 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:44:19,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:44:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash -349675694, now seen corresponding path program 6 times [2024-11-09 02:44:19,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:44:19,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716917765] [2024-11-09 02:44:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:44:19,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:44:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:44:19,951 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:19,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:44:19,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716917765] [2024-11-09 02:44:19,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716917765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:44:19,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831034352] [2024-11-09 02:44:19,953 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:44:19,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:44:19,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:44:19,955 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) [2024-11-09 02:44:19,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 02:44:20,068 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-09 02:44:20,069 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:44:20,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 02:44:20,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:44:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:20,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:44:20,877 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:44:20,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831034352] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:44:20,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:44:20,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2024-11-09 02:44:20,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884864575] [2024-11-09 02:44:20,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:44:20,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 02:44:20,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:44:20,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 02:44:20,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-11-09 02:44:20,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-09 02:44:20,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 356 transitions, 6108 flow. Second operand has 21 states, 21 states have (on average 14.428571428571429) internal successors, (303), 21 states have internal predecessors, (303), 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) [2024-11-09 02:44:20,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:44:20,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-09 02:44:20,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:34,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.22s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 02:44:38,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 02:44:42,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 02:44:44,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 02:44:45,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 02:44:47,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 02:44:51,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 02:44:56,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 02:45:08,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 02:45:13,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []