./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 23:55:32,327 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:55:32,384 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:55:32,388 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:55:32,388 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:55:32,414 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:55:32,414 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:55:32,415 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:55:32,415 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:55:32,417 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:55:32,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:55:32,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:55:32,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:55:32,420 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:55:32,420 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:55:32,420 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:55:32,421 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:55:32,421 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:55:32,421 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:55:32,421 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:55:32,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:55:32,422 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:55:32,422 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:55:32,422 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:55:32,423 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:55:32,423 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:55:32,423 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:55:32,423 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:55:32,423 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:55:32,424 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:55:32,424 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:55:32,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:55:32,424 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:55:32,424 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:55:32,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:55:32,425 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:55:32,425 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:55:32,427 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:55:32,427 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:55:32,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:55:32,427 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:55:32,428 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:55:32,428 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:55:32,428 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:55:32,429 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2024-10-11 23:55:32,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:55:32,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:55:32,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:55:32,721 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:55:32,721 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:55:32,722 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-10-11 23:55:34,205 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:55:34,422 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:55:34,423 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-10-11 23:55:34,445 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f0ea01ca0/138a8dbe874348a29a8545610699ce85/FLAG42c49e89a [2024-10-11 23:55:34,459 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f0ea01ca0/138a8dbe874348a29a8545610699ce85 [2024-10-11 23:55:34,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:55:34,462 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:55:34,463 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:55:34,463 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:55:34,473 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:55:34,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:55:34" (1/1) ... [2024-10-11 23:55:34,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1570eac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:55:34, skipping insertion in model container [2024-10-11 23:55:34,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:55:34" (1/1) ... [2024-10-11 23:55:34,514 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:55:35,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:55:35,046 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:55:35,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:55:35,136 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:55:35,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:55:35 WrapperNode [2024-10-11 23:55:35,136 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:55:35,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:55:35,138 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:55:35,138 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:55:35,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:55:35" (1/1) ... [2024-10-11 23:55:35,160 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:55:35" (1/1) ... [2024-10-11 23:55:35,178 INFO L138 Inliner]: procedures = 364, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2024-10-11 23:55:35,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:55:35,178 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:55:35,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:55:35,178 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:55:35,187 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:55:35" (1/1) ... [2024-10-11 23:55:35,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:55:35" (1/1) ... [2024-10-11 23:55:35,192 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:55:35" (1/1) ... [2024-10-11 23:55:35,201 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-10-11 23:55:35,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:55:35" (1/1) ... [2024-10-11 23:55:35,201 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:55:35" (1/1) ... [2024-10-11 23:55:35,204 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:55:35" (1/1) ... [2024-10-11 23:55:35,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:55:35" (1/1) ... [2024-10-11 23:55:35,207 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:55:35" (1/1) ... [2024-10-11 23:55:35,208 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:55:35" (1/1) ... [2024-10-11 23:55:35,210 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:55:35,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:55:35,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:55:35,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:55:35,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:55:35" (1/1) ... [2024-10-11 23:55:35,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:55:35,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:55:35,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 23:55:35,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 23:55:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 23:55:35,292 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 23:55:35,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:55:35,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2024-10-11 23:55:35,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2024-10-11 23:55:35,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 23:55:35,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 23:55:35,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:55:35,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:55:35,295 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 23:55:35,415 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:55:35,417 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:55:35,571 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:55:35,572 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:55:35,679 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:55:35,680 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 23:55:35,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:55:35 BoogieIcfgContainer [2024-10-11 23:55:35,680 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:55:35,682 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:55:35,683 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:55:35,685 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:55:35,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:55:34" (1/3) ... [2024-10-11 23:55:35,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dada246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:55:35, skipping insertion in model container [2024-10-11 23:55:35,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:55:35" (2/3) ... [2024-10-11 23:55:35,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dada246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:55:35, skipping insertion in model container [2024-10-11 23:55:35,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:55:35" (3/3) ... [2024-10-11 23:55:35,688 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2024-10-11 23:55:35,701 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:55:35,701 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-11 23:55:35,701 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:55:35,726 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-11 23:55:35,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 35 transitions, 77 flow [2024-10-11 23:55:35,768 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2024-10-11 23:55:35,769 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:55:35,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 34 events. 2/34 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-10-11 23:55:35,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 35 transitions, 77 flow [2024-10-11 23:55:35,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 32 transitions, 67 flow [2024-10-11 23:55:35,807 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:55:35,820 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;@94f4779, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:55:35,820 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-11 23:55:35,853 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:55:35,853 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-10-11 23:55:35,853 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:55:35,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:35,855 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:35,856 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:55:35,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:35,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1980317922, now seen corresponding path program 1 times [2024-10-11 23:55:35,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:35,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595625806] [2024-10-11 23:55:35,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:35,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:36,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:36,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:36,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595625806] [2024-10-11 23:55:36,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595625806] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:55:36,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:55:36,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 23:55:36,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578211024] [2024-10-11 23:55:36,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:55:36,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:55:36,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:36,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:55:36,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:55:36,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-10-11 23:55:36,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-10-11 23:55:36,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:36,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-10-11 23:55:36,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:36,157 INFO L124 PetriNetUnfolderBase]: 92/257 cut-off events. [2024-10-11 23:55:36,157 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:55:36,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 257 events. 92/257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1173 event pairs, 22 based on Foata normal form. 4/232 useless extension candidates. Maximal degree in co-relation 437. Up to 152 conditions per place. [2024-10-11 23:55:36,162 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 25 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2024-10-11 23:55:36,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 41 transitions, 141 flow [2024-10-11 23:55:36,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:55:36,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:55:36,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-10-11 23:55:36,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-10-11 23:55:36,175 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 67 flow. Second operand 3 states and 72 transitions. [2024-10-11 23:55:36,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 41 transitions, 141 flow [2024-10-11 23:55:36,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:55:36,179 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 87 flow [2024-10-11 23:55:36,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2024-10-11 23:55:36,187 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2024-10-11 23:55:36,188 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 87 flow [2024-10-11 23:55:36,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-10-11 23:55:36,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:36,188 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:36,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 23:55:36,189 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:55:36,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:36,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1956177667, now seen corresponding path program 1 times [2024-10-11 23:55:36,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:36,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769009566] [2024-10-11 23:55:36,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:36,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:36,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:36,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769009566] [2024-10-11 23:55:36,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769009566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:55:36,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:55:36,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:55:36,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263078713] [2024-10-11 23:55:36,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:55:36,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:55:36,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:36,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:55:36,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:55:36,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-11 23:55:36,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-10-11 23:55:36,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:36,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-11 23:55:36,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:36,495 INFO L124 PetriNetUnfolderBase]: 118/307 cut-off events. [2024-10-11 23:55:36,495 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-10-11 23:55:36,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 307 events. 118/307 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1448 event pairs, 40 based on Foata normal form. 24/303 useless extension candidates. Maximal degree in co-relation 607. Up to 195 conditions per place. [2024-10-11 23:55:36,503 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 37 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2024-10-11 23:55:36,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 54 transitions, 224 flow [2024-10-11 23:55:36,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:55:36,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:55:36,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-10-11 23:55:36,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6114285714285714 [2024-10-11 23:55:36,506 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 87 flow. Second operand 5 states and 107 transitions. [2024-10-11 23:55:36,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 54 transitions, 224 flow [2024-10-11 23:55:36,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:55:36,509 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 126 flow [2024-10-11 23:55:36,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-10-11 23:55:36,510 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2024-10-11 23:55:36,510 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 126 flow [2024-10-11 23:55:36,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-10-11 23:55:36,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:36,510 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:36,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 23:55:36,511 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:55:36,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:36,511 INFO L85 PathProgramCache]: Analyzing trace with hash 615279125, now seen corresponding path program 1 times [2024-10-11 23:55:36,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:36,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898904157] [2024-10-11 23:55:36,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:36,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:36,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:36,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898904157] [2024-10-11 23:55:36,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898904157] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:55:36,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:55:36,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:55:36,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799895238] [2024-10-11 23:55:36,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:55:36,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:55:36,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:36,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:55:36,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:55:36,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-10-11 23:55:36,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-10-11 23:55:36,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:36,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-10-11 23:55:36,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:36,708 INFO L124 PetriNetUnfolderBase]: 142/394 cut-off events. [2024-10-11 23:55:36,708 INFO L125 PetriNetUnfolderBase]: For 194/219 co-relation queries the response was YES. [2024-10-11 23:55:36,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 858 conditions, 394 events. 142/394 cut-off events. For 194/219 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1889 event pairs, 42 based on Foata normal form. 21/396 useless extension candidates. Maximal degree in co-relation 843. Up to 172 conditions per place. [2024-10-11 23:55:36,715 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 46 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-10-11 23:55:36,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 307 flow [2024-10-11 23:55:36,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:55:36,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:55:36,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-10-11 23:55:36,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7071428571428572 [2024-10-11 23:55:36,717 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 126 flow. Second operand 4 states and 99 transitions. [2024-10-11 23:55:36,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 307 flow [2024-10-11 23:55:36,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 62 transitions, 295 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:55:36,720 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 142 flow [2024-10-11 23:55:36,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-10-11 23:55:36,720 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2024-10-11 23:55:36,720 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 142 flow [2024-10-11 23:55:36,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-10-11 23:55:36,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:36,721 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:36,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:55:36,721 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:55:36,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:36,722 INFO L85 PathProgramCache]: Analyzing trace with hash -526843008, now seen corresponding path program 1 times [2024-10-11 23:55:36,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:36,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49079047] [2024-10-11 23:55:36,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:36,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:36,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:36,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:36,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49079047] [2024-10-11 23:55:36,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49079047] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:55:36,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:55:36,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:55:36,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319834557] [2024-10-11 23:55:36,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:55:36,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:55:36,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:36,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:55:36,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:55:36,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-10-11 23:55:36,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-10-11 23:55:36,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:36,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-10-11 23:55:36,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:36,985 INFO L124 PetriNetUnfolderBase]: 212/602 cut-off events. [2024-10-11 23:55:36,985 INFO L125 PetriNetUnfolderBase]: For 346/374 co-relation queries the response was YES. [2024-10-11 23:55:36,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 602 events. 212/602 cut-off events. For 346/374 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3212 event pairs, 97 based on Foata normal form. 24/603 useless extension candidates. Maximal degree in co-relation 1422. Up to 257 conditions per place. [2024-10-11 23:55:36,990 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 48 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-10-11 23:55:36,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 339 flow [2024-10-11 23:55:36,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:55:36,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:55:36,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-10-11 23:55:36,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-10-11 23:55:36,994 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 142 flow. Second operand 4 states and 98 transitions. [2024-10-11 23:55:36,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 339 flow [2024-10-11 23:55:36,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 333 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:55:36,999 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 164 flow [2024-10-11 23:55:36,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2024-10-11 23:55:37,000 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2024-10-11 23:55:37,001 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 164 flow [2024-10-11 23:55:37,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-10-11 23:55:37,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:37,002 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:37,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 23:55:37,002 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:55:37,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:37,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1187644930, now seen corresponding path program 1 times [2024-10-11 23:55:37,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:37,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986761945] [2024-10-11 23:55:37,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:37,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:37,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:37,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986761945] [2024-10-11 23:55:37,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986761945] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:55:37,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:55:37,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:55:37,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954428348] [2024-10-11 23:55:37,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:55:37,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:55:37,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:37,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:55:37,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:55:37,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2024-10-11 23:55:37,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:55:37,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:37,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2024-10-11 23:55:37,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:37,122 INFO L124 PetriNetUnfolderBase]: 125/441 cut-off events. [2024-10-11 23:55:37,122 INFO L125 PetriNetUnfolderBase]: For 293/309 co-relation queries the response was YES. [2024-10-11 23:55:37,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 441 events. 125/441 cut-off events. For 293/309 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2146 event pairs, 43 based on Foata normal form. 20/459 useless extension candidates. Maximal degree in co-relation 1083. Up to 140 conditions per place. [2024-10-11 23:55:37,124 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 32 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2024-10-11 23:55:37,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 51 transitions, 277 flow [2024-10-11 23:55:37,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:55:37,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:55:37,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-10-11 23:55:37,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-10-11 23:55:37,125 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 164 flow. Second operand 3 states and 75 transitions. [2024-10-11 23:55:37,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 51 transitions, 277 flow [2024-10-11 23:55:37,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 267 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-11 23:55:37,128 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 151 flow [2024-10-11 23:55:37,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-10-11 23:55:37,129 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2024-10-11 23:55:37,129 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 151 flow [2024-10-11 23:55:37,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:55:37,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:37,129 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:37,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 23:55:37,129 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:55:37,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:37,130 INFO L85 PathProgramCache]: Analyzing trace with hash -391971327, now seen corresponding path program 1 times [2024-10-11 23:55:37,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:37,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721404471] [2024-10-11 23:55:37,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:37,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:37,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:37,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:37,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721404471] [2024-10-11 23:55:37,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721404471] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:55:37,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:55:37,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:55:37,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444865300] [2024-10-11 23:55:37,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:55:37,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:55:37,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:37,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:55:37,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 23:55:37,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-11 23:55:37,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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) [2024-10-11 23:55:37,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:37,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-11 23:55:37,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:37,314 INFO L124 PetriNetUnfolderBase]: 232/655 cut-off events. [2024-10-11 23:55:37,314 INFO L125 PetriNetUnfolderBase]: For 455/491 co-relation queries the response was YES. [2024-10-11 23:55:37,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1767 conditions, 655 events. 232/655 cut-off events. For 455/491 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3518 event pairs, 92 based on Foata normal form. 10/640 useless extension candidates. Maximal degree in co-relation 1750. Up to 249 conditions per place. [2024-10-11 23:55:37,318 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 48 selfloop transitions, 6 changer transitions 0/65 dead transitions. [2024-10-11 23:55:37,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 65 transitions, 367 flow [2024-10-11 23:55:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:55:37,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:55:37,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-10-11 23:55:37,320 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6114285714285714 [2024-10-11 23:55:37,321 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 151 flow. Second operand 5 states and 107 transitions. [2024-10-11 23:55:37,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 65 transitions, 367 flow [2024-10-11 23:55:37,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 65 transitions, 357 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:55:37,324 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 180 flow [2024-10-11 23:55:37,325 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-10-11 23:55:37,325 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2024-10-11 23:55:37,325 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 180 flow [2024-10-11 23:55:37,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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) [2024-10-11 23:55:37,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:37,326 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:37,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 23:55:37,327 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:55:37,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:37,327 INFO L85 PathProgramCache]: Analyzing trace with hash -298802143, now seen corresponding path program 1 times [2024-10-11 23:55:37,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:37,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500219862] [2024-10-11 23:55:37,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:37,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:37,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:37,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:37,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500219862] [2024-10-11 23:55:37,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500219862] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:55:37,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:55:37,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:55:37,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562874498] [2024-10-11 23:55:37,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:55:37,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:55:37,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:37,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:55:37,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 23:55:37,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-11 23:55:37,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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) [2024-10-11 23:55:37,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:37,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-11 23:55:37,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:37,529 INFO L124 PetriNetUnfolderBase]: 278/830 cut-off events. [2024-10-11 23:55:37,530 INFO L125 PetriNetUnfolderBase]: For 796/827 co-relation queries the response was YES. [2024-10-11 23:55:37,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 830 events. 278/830 cut-off events. For 796/827 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4752 event pairs, 120 based on Foata normal form. 18/837 useless extension candidates. Maximal degree in co-relation 2204. Up to 302 conditions per place. [2024-10-11 23:55:37,534 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 69 selfloop transitions, 7 changer transitions 0/87 dead transitions. [2024-10-11 23:55:37,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 87 transitions, 529 flow [2024-10-11 23:55:37,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:55:37,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:55:37,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-10-11 23:55:37,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-10-11 23:55:37,535 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 180 flow. Second operand 6 states and 133 transitions. [2024-10-11 23:55:37,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 87 transitions, 529 flow [2024-10-11 23:55:37,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 87 transitions, 524 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:55:37,538 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 233 flow [2024-10-11 23:55:37,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2024-10-11 23:55:37,539 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 25 predicate places. [2024-10-11 23:55:37,539 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 233 flow [2024-10-11 23:55:37,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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) [2024-10-11 23:55:37,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:37,539 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:37,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 23:55:37,539 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:55:37,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:37,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1077199397, now seen corresponding path program 1 times [2024-10-11 23:55:37,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:37,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567454641] [2024-10-11 23:55:37,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:37,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:37,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:37,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:37,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567454641] [2024-10-11 23:55:37,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567454641] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:55:37,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:55:37,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:55:37,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139238476] [2024-10-11 23:55:37,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:55:37,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:55:37,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:37,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:55:37,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 23:55:37,597 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-11 23:55:37,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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) [2024-10-11 23:55:37,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:37,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-11 23:55:37,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:37,691 INFO L124 PetriNetUnfolderBase]: 282/802 cut-off events. [2024-10-11 23:55:37,691 INFO L125 PetriNetUnfolderBase]: For 1121/1192 co-relation queries the response was YES. [2024-10-11 23:55:37,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 802 events. 282/802 cut-off events. For 1121/1192 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4410 event pairs, 119 based on Foata normal form. 5/805 useless extension candidates. Maximal degree in co-relation 2303. Up to 514 conditions per place. [2024-10-11 23:55:37,696 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 53 selfloop transitions, 7 changer transitions 0/71 dead transitions. [2024-10-11 23:55:37,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 71 transitions, 472 flow [2024-10-11 23:55:37,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:55:37,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:55:37,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-10-11 23:55:37,697 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6114285714285714 [2024-10-11 23:55:37,697 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 233 flow. Second operand 5 states and 107 transitions. [2024-10-11 23:55:37,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 71 transitions, 472 flow [2024-10-11 23:55:37,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 71 transitions, 465 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 23:55:37,700 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 267 flow [2024-10-11 23:55:37,700 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=267, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2024-10-11 23:55:37,701 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2024-10-11 23:55:37,701 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 267 flow [2024-10-11 23:55:37,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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) [2024-10-11 23:55:37,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:37,701 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:37,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 23:55:37,702 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:55:37,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:37,702 INFO L85 PathProgramCache]: Analyzing trace with hash -672931533, now seen corresponding path program 1 times [2024-10-11 23:55:37,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:37,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137324249] [2024-10-11 23:55:37,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:37,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:37,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:37,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:37,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137324249] [2024-10-11 23:55:37,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137324249] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:55:37,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:55:37,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:55:37,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30391157] [2024-10-11 23:55:37,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:55:37,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:55:37,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:37,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:55:37,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 23:55:37,748 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-11 23:55:37,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 267 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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) [2024-10-11 23:55:37,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:37,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-11 23:55:37,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:37,876 INFO L124 PetriNetUnfolderBase]: 279/872 cut-off events. [2024-10-11 23:55:37,876 INFO L125 PetriNetUnfolderBase]: For 1313/1320 co-relation queries the response was YES. [2024-10-11 23:55:37,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2505 conditions, 872 events. 279/872 cut-off events. For 1313/1320 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5304 event pairs, 139 based on Foata normal form. 4/866 useless extension candidates. Maximal degree in co-relation 2478. Up to 520 conditions per place. [2024-10-11 23:55:37,880 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 54 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-10-11 23:55:37,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 74 transitions, 514 flow [2024-10-11 23:55:37,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:55:37,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:55:37,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-10-11 23:55:37,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5469387755102041 [2024-10-11 23:55:37,881 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 267 flow. Second operand 7 states and 134 transitions. [2024-10-11 23:55:37,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 74 transitions, 514 flow [2024-10-11 23:55:37,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 501 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-11 23:55:37,885 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 310 flow [2024-10-11 23:55:37,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=310, PETRI_PLACES=69, PETRI_TRANSITIONS=50} [2024-10-11 23:55:37,885 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 35 predicate places. [2024-10-11 23:55:37,885 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 310 flow [2024-10-11 23:55:37,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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) [2024-10-11 23:55:37,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:37,886 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:37,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 23:55:37,886 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:55:37,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:37,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1579979810, now seen corresponding path program 1 times [2024-10-11 23:55:37,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:37,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612230500] [2024-10-11 23:55:37,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:37,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:37,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:37,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:37,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612230500] [2024-10-11 23:55:37,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612230500] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:55:37,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580345822] [2024-10-11 23:55:37,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:37,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:55:37,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:55:37,941 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:55:37,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 23:55:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:38,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 23:55:38,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:55:38,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:38,048 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:55:38,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580345822] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:55:38,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:55:38,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:55:38,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155583408] [2024-10-11 23:55:38,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:55:38,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:55:38,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:38,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:55:38,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:55:38,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-11 23:55:38,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 50 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2024-10-11 23:55:38,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:38,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-11 23:55:38,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:38,164 INFO L124 PetriNetUnfolderBase]: 261/800 cut-off events. [2024-10-11 23:55:38,165 INFO L125 PetriNetUnfolderBase]: For 1483/1509 co-relation queries the response was YES. [2024-10-11 23:55:38,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2324 conditions, 800 events. 261/800 cut-off events. For 1483/1509 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4635 event pairs, 118 based on Foata normal form. 24/814 useless extension candidates. Maximal degree in co-relation 2294. Up to 496 conditions per place. [2024-10-11 23:55:38,169 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 45 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2024-10-11 23:55:38,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 62 transitions, 445 flow [2024-10-11 23:55:38,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:55:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:55:38,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-10-11 23:55:38,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-10-11 23:55:38,170 INFO L175 Difference]: Start difference. First operand has 69 places, 50 transitions, 310 flow. Second operand 6 states and 110 transitions. [2024-10-11 23:55:38,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 62 transitions, 445 flow [2024-10-11 23:55:38,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 62 transitions, 427 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-11 23:55:38,201 INFO L231 Difference]: Finished difference. Result has 66 places, 48 transitions, 282 flow [2024-10-11 23:55:38,202 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=66, PETRI_TRANSITIONS=48} [2024-10-11 23:55:38,203 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 32 predicate places. [2024-10-11 23:55:38,203 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 48 transitions, 282 flow [2024-10-11 23:55:38,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2024-10-11 23:55:38,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:38,203 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:38,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 23:55:38,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 23:55:38,405 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:55:38,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:38,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1734733546, now seen corresponding path program 1 times [2024-10-11 23:55:38,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:38,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997496220] [2024-10-11 23:55:38,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:38,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:38,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:38,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:38,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997496220] [2024-10-11 23:55:38,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997496220] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:55:38,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565966591] [2024-10-11 23:55:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:38,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:55:38,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:55:38,482 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:55:38,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 23:55:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:38,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 23:55:38,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:55:38,581 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:38,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:55:38,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:38,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565966591] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:55:38,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:55:38,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-11 23:55:38,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353202305] [2024-10-11 23:55:38,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:55:38,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 23:55:38,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:38,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 23:55:38,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-11 23:55:38,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-11 23:55:38,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 48 transitions, 282 flow. Second operand has 12 states, 12 states have (on average 14.5) internal successors, (174), 12 states have internal predecessors, (174), 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) [2024-10-11 23:55:38,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:38,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-11 23:55:38,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:39,064 INFO L124 PetriNetUnfolderBase]: 646/1929 cut-off events. [2024-10-11 23:55:39,065 INFO L125 PetriNetUnfolderBase]: For 3104/3242 co-relation queries the response was YES. [2024-10-11 23:55:39,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5345 conditions, 1929 events. 646/1929 cut-off events. For 3104/3242 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 14161 event pairs, 102 based on Foata normal form. 73/1989 useless extension candidates. Maximal degree in co-relation 5317. Up to 415 conditions per place. [2024-10-11 23:55:39,121 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 166 selfloop transitions, 28 changer transitions 0/205 dead transitions. [2024-10-11 23:55:39,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 205 transitions, 1384 flow [2024-10-11 23:55:39,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 23:55:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 23:55:39,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 364 transitions. [2024-10-11 23:55:39,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-11 23:55:39,123 INFO L175 Difference]: Start difference. First operand has 66 places, 48 transitions, 282 flow. Second operand 16 states and 364 transitions. [2024-10-11 23:55:39,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 205 transitions, 1384 flow [2024-10-11 23:55:39,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 205 transitions, 1369 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 23:55:39,132 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 576 flow [2024-10-11 23:55:39,132 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=576, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2024-10-11 23:55:39,133 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 51 predicate places. [2024-10-11 23:55:39,133 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 576 flow [2024-10-11 23:55:39,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.5) internal successors, (174), 12 states have internal predecessors, (174), 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) [2024-10-11 23:55:39,133 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:39,133 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:39,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 23:55:39,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:55:39,335 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:55:39,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:39,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1894710753, now seen corresponding path program 1 times [2024-10-11 23:55:39,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:39,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882944082] [2024-10-11 23:55:39,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:39,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:39,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:39,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882944082] [2024-10-11 23:55:39,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882944082] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:55:39,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638160446] [2024-10-11 23:55:39,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:39,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:55:39,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:55:39,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:55:39,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 23:55:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:39,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:55:39,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:55:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:39,566 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:55:39,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638160446] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:55:39,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:55:39,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-11 23:55:39,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117823040] [2024-10-11 23:55:39,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:55:39,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:55:39,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:39,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:55:39,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:55:39,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-10-11 23:55:39,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 576 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-10-11 23:55:39,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:39,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-10-11 23:55:39,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:39,859 INFO L124 PetriNetUnfolderBase]: 663/1900 cut-off events. [2024-10-11 23:55:39,860 INFO L125 PetriNetUnfolderBase]: For 3568/3686 co-relation queries the response was YES. [2024-10-11 23:55:39,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5691 conditions, 1900 events. 663/1900 cut-off events. For 3568/3686 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 13926 event pairs, 60 based on Foata normal form. 63/1900 useless extension candidates. Maximal degree in co-relation 5655. Up to 813 conditions per place. [2024-10-11 23:55:39,873 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 120 selfloop transitions, 5 changer transitions 0/140 dead transitions. [2024-10-11 23:55:39,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 140 transitions, 1276 flow [2024-10-11 23:55:39,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:55:39,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:55:39,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-10-11 23:55:39,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2024-10-11 23:55:39,874 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 576 flow. Second operand 6 states and 137 transitions. [2024-10-11 23:55:39,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 140 transitions, 1276 flow [2024-10-11 23:55:39,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 140 transitions, 1078 flow, removed 84 selfloop flow, removed 6 redundant places. [2024-10-11 23:55:39,884 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 478 flow [2024-10-11 23:55:39,884 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=478, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2024-10-11 23:55:39,884 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 49 predicate places. [2024-10-11 23:55:39,884 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 478 flow [2024-10-11 23:55:39,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-10-11 23:55:39,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:39,885 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:39,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 23:55:40,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:55:40,086 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:55:40,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:40,086 INFO L85 PathProgramCache]: Analyzing trace with hash 637345145, now seen corresponding path program 1 times [2024-10-11 23:55:40,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:40,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128537441] [2024-10-11 23:55:40,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:40,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:40,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:40,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128537441] [2024-10-11 23:55:40,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128537441] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:55:40,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014970489] [2024-10-11 23:55:40,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:40,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:55:40,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:55:40,167 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:55:40,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 23:55:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:40,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:55:40,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:55:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:40,249 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:55:40,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014970489] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:55:40,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:55:40,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-11 23:55:40,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870060873] [2024-10-11 23:55:40,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:55:40,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:55:40,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:40,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:55:40,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:55:40,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-10-11 23:55:40,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 478 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2024-10-11 23:55:40,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:40,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-10-11 23:55:40,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:40,468 INFO L124 PetriNetUnfolderBase]: 675/1975 cut-off events. [2024-10-11 23:55:40,468 INFO L125 PetriNetUnfolderBase]: For 3492/3532 co-relation queries the response was YES. [2024-10-11 23:55:40,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5833 conditions, 1975 events. 675/1975 cut-off events. For 3492/3532 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 14660 event pairs, 145 based on Foata normal form. 75/1966 useless extension candidates. Maximal degree in co-relation 5799. Up to 798 conditions per place. [2024-10-11 23:55:40,481 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 138 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2024-10-11 23:55:40,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 157 transitions, 1317 flow [2024-10-11 23:55:40,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:55:40,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:55:40,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-10-11 23:55:40,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-11 23:55:40,482 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 478 flow. Second operand 6 states and 140 transitions. [2024-10-11 23:55:40,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 157 transitions, 1317 flow [2024-10-11 23:55:40,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 157 transitions, 1292 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:55:40,489 INFO L231 Difference]: Finished difference. Result has 84 places, 71 transitions, 479 flow [2024-10-11 23:55:40,490 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=479, PETRI_PLACES=84, PETRI_TRANSITIONS=71} [2024-10-11 23:55:40,490 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2024-10-11 23:55:40,490 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 479 flow [2024-10-11 23:55:40,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2024-10-11 23:55:40,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:40,491 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-11 23:55:40,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 23:55:40,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 23:55:40,694 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:55:40,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:40,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1717136704, now seen corresponding path program 1 times [2024-10-11 23:55:40,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:40,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024821313] [2024-10-11 23:55:40,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:40,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:55:40,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:40,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024821313] [2024-10-11 23:55:40,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024821313] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:55:40,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:55:40,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:55:40,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504076767] [2024-10-11 23:55:40,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:55:40,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:55:40,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:40,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:55:40,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:55:40,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-11 23:55:40,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 479 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-10-11 23:55:40,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:40,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-11 23:55:40,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:40,973 INFO L124 PetriNetUnfolderBase]: 739/2092 cut-off events. [2024-10-11 23:55:40,974 INFO L125 PetriNetUnfolderBase]: For 3992/4002 co-relation queries the response was YES. [2024-10-11 23:55:40,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6358 conditions, 2092 events. 739/2092 cut-off events. For 3992/4002 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 15140 event pairs, 177 based on Foata normal form. 75/2160 useless extension candidates. Maximal degree in co-relation 6324. Up to 824 conditions per place. [2024-10-11 23:55:40,986 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 112 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2024-10-11 23:55:40,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 131 transitions, 1134 flow [2024-10-11 23:55:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:55:40,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:55:40,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-10-11 23:55:40,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-10-11 23:55:40,987 INFO L175 Difference]: Start difference. First operand has 84 places, 71 transitions, 479 flow. Second operand 4 states and 88 transitions. [2024-10-11 23:55:40,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 131 transitions, 1134 flow [2024-10-11 23:55:40,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 131 transitions, 1125 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-11 23:55:40,994 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 486 flow [2024-10-11 23:55:40,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=486, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2024-10-11 23:55:40,995 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 49 predicate places. [2024-10-11 23:55:40,995 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 486 flow [2024-10-11 23:55:40,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-10-11 23:55:40,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:40,995 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-11 23:55:40,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 23:55:40,995 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread_function_mutexErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:55:40,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:40,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1393508487, now seen corresponding path program 1 times [2024-10-11 23:55:40,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:40,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569173985] [2024-10-11 23:55:40,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:40,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:41,025 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:55:41,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:41,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569173985] [2024-10-11 23:55:41,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569173985] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:55:41,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:55:41,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:55:41,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130602092] [2024-10-11 23:55:41,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:55:41,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:55:41,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:41,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:55:41,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:55:41,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-11 23:55:41,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 486 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) [2024-10-11 23:55:41,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:41,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-11 23:55:41,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:41,198 INFO L124 PetriNetUnfolderBase]: 730/1975 cut-off events. [2024-10-11 23:55:41,198 INFO L125 PetriNetUnfolderBase]: For 4169/4192 co-relation queries the response was YES. [2024-10-11 23:55:41,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6311 conditions, 1975 events. 730/1975 cut-off events. For 4169/4192 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 13870 event pairs, 180 based on Foata normal form. 63/2034 useless extension candidates. Maximal degree in co-relation 6278. Up to 859 conditions per place. [2024-10-11 23:55:41,211 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 92 selfloop transitions, 6 changer transitions 0/111 dead transitions. [2024-10-11 23:55:41,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 111 transitions, 923 flow [2024-10-11 23:55:41,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:55:41,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:55:41,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-10-11 23:55:41,212 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-10-11 23:55:41,213 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 486 flow. Second operand 4 states and 86 transitions. [2024-10-11 23:55:41,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 111 transitions, 923 flow [2024-10-11 23:55:41,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 111 transitions, 897 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-11 23:55:41,220 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 490 flow [2024-10-11 23:55:41,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=490, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2024-10-11 23:55:41,221 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 49 predicate places. [2024-10-11 23:55:41,221 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 490 flow [2024-10-11 23:55:41,221 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) [2024-10-11 23:55:41,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:41,222 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:41,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 23:55:41,222 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:55:41,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:41,222 INFO L85 PathProgramCache]: Analyzing trace with hash -123948766, now seen corresponding path program 1 times [2024-10-11 23:55:41,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:41,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553980409] [2024-10-11 23:55:41,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:41,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:41,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:41,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553980409] [2024-10-11 23:55:41,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553980409] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:55:41,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960719019] [2024-10-11 23:55:41,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:41,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:55:41,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:55:41,370 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:55:41,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 23:55:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:41,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 23:55:41,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:55:41,501 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:41,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:55:41,622 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:41,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960719019] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:55:41,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:55:41,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-10-11 23:55:41,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795845059] [2024-10-11 23:55:41,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:55:41,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 23:55:41,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:41,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 23:55:41,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2024-10-11 23:55:41,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-11 23:55:41,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 490 flow. Second operand has 22 states, 22 states have (on average 14.818181818181818) internal successors, (326), 22 states have internal predecessors, (326), 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) [2024-10-11 23:55:41,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:41,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-11 23:55:41,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:43,568 INFO L124 PetriNetUnfolderBase]: 3176/8723 cut-off events. [2024-10-11 23:55:43,569 INFO L125 PetriNetUnfolderBase]: For 31435/31435 co-relation queries the response was YES. [2024-10-11 23:55:43,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28183 conditions, 8723 events. 3176/8723 cut-off events. For 31435/31435 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 70559 event pairs, 357 based on Foata normal form. 412/9109 useless extension candidates. Maximal degree in co-relation 28150. Up to 1325 conditions per place. [2024-10-11 23:55:43,625 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 653 selfloop transitions, 116 changer transitions 0/778 dead transitions. [2024-10-11 23:55:43,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 778 transitions, 6020 flow [2024-10-11 23:55:43,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-10-11 23:55:43,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-10-11 23:55:43,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 1395 transitions. [2024-10-11 23:55:43,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6755447941888619 [2024-10-11 23:55:43,628 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 490 flow. Second operand 59 states and 1395 transitions. [2024-10-11 23:55:43,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 778 transitions, 6020 flow [2024-10-11 23:55:43,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 778 transitions, 5750 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:55:43,787 INFO L231 Difference]: Finished difference. Result has 178 places, 170 transitions, 1788 flow [2024-10-11 23:55:43,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=1788, PETRI_PLACES=178, PETRI_TRANSITIONS=170} [2024-10-11 23:55:43,789 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 144 predicate places. [2024-10-11 23:55:43,789 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 170 transitions, 1788 flow [2024-10-11 23:55:43,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 14.818181818181818) internal successors, (326), 22 states have internal predecessors, (326), 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) [2024-10-11 23:55:43,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:43,789 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:43,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 23:55:43,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 23:55:43,990 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:55:43,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:43,991 INFO L85 PathProgramCache]: Analyzing trace with hash 124617666, now seen corresponding path program 1 times [2024-10-11 23:55:43,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:43,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843248001] [2024-10-11 23:55:43,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:43,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:44,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:44,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843248001] [2024-10-11 23:55:44,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843248001] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:55:44,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653468526] [2024-10-11 23:55:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:44,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:55:44,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:55:44,231 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:55:44,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 23:55:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:44,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 23:55:44,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:55:44,387 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:44,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:55:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:44,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653468526] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:55:44,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:55:44,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-10-11 23:55:44,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255566232] [2024-10-11 23:55:44,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:55:44,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 23:55:44,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:44,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 23:55:44,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=376, Unknown=0, NotChecked=0, Total=600 [2024-10-11 23:55:44,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-11 23:55:44,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 170 transitions, 1788 flow. Second operand has 25 states, 25 states have (on average 15.92) internal successors, (398), 25 states have internal predecessors, (398), 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) [2024-10-11 23:55:44,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:44,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-11 23:55:44,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:49,953 INFO L124 PetriNetUnfolderBase]: 8338/23336 cut-off events. [2024-10-11 23:55:49,953 INFO L125 PetriNetUnfolderBase]: For 414632/414632 co-relation queries the response was YES. [2024-10-11 23:55:50,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80348 conditions, 23336 events. 8338/23336 cut-off events. For 414632/414632 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 216100 event pairs, 1838 based on Foata normal form. 595/23884 useless extension candidates. Maximal degree in co-relation 80274. Up to 3588 conditions per place. [2024-10-11 23:55:50,402 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 625 selfloop transitions, 382 changer transitions 0/1016 dead transitions. [2024-10-11 23:55:50,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 1016 transitions, 10163 flow [2024-10-11 23:55:50,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-10-11 23:55:50,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2024-10-11 23:55:50,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 1222 transitions. [2024-10-11 23:55:50,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6465608465608466 [2024-10-11 23:55:50,414 INFO L175 Difference]: Start difference. First operand has 178 places, 170 transitions, 1788 flow. Second operand 54 states and 1222 transitions. [2024-10-11 23:55:50,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 1016 transitions, 10163 flow [2024-10-11 23:55:51,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 1016 transitions, 8307 flow, removed 831 selfloop flow, removed 15 redundant places. [2024-10-11 23:55:51,226 INFO L231 Difference]: Finished difference. Result has 249 places, 504 transitions, 5185 flow [2024-10-11 23:55:51,227 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=5185, PETRI_PLACES=249, PETRI_TRANSITIONS=504} [2024-10-11 23:55:51,227 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 215 predicate places. [2024-10-11 23:55:51,229 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 504 transitions, 5185 flow [2024-10-11 23:55:51,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 15.92) internal successors, (398), 25 states have internal predecessors, (398), 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) [2024-10-11 23:55:51,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:51,230 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2024-10-11 23:55:51,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 23:55:51,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 23:55:51,432 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:55:51,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:51,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1461579277, now seen corresponding path program 2 times [2024-10-11 23:55:51,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:51,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892340189] [2024-10-11 23:55:51,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:51,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:51,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:51,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892340189] [2024-10-11 23:55:51,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892340189] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:55:51,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565229241] [2024-10-11 23:55:51,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 23:55:51,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:55:51,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:55:51,850 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:55:51,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 23:55:51,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 23:55:51,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:55:51,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 23:55:51,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:55:52,097 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:52,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:55:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:52,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565229241] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:55:52,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:55:52,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2024-10-11 23:55:52,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331197699] [2024-10-11 23:55:52,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:55:52,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-11 23:55:52,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:52,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-11 23:55:52,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=655, Unknown=0, NotChecked=0, Total=930 [2024-10-11 23:55:52,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-11 23:55:52,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 504 transitions, 5185 flow. Second operand has 31 states, 31 states have (on average 15.35483870967742) internal successors, (476), 31 states have internal predecessors, (476), 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) [2024-10-11 23:55:52,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:52,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-11 23:55:52,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:56:10,659 INFO L124 PetriNetUnfolderBase]: 19503/54075 cut-off events. [2024-10-11 23:56:10,659 INFO L125 PetriNetUnfolderBase]: For 2110005/2110005 co-relation queries the response was YES. [2024-10-11 23:56:11,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187673 conditions, 54075 events. 19503/54075 cut-off events. For 2110005/2110005 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 574436 event pairs, 2409 based on Foata normal form. 1275/55256 useless extension candidates. Maximal degree in co-relation 187566. Up to 8686 conditions per place. [2024-10-11 23:56:11,861 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 1264 selfloop transitions, 1084 changer transitions 0/2357 dead transitions. [2024-10-11 23:56:11,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 2357 transitions, 23831 flow [2024-10-11 23:56:11,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-10-11 23:56:11,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2024-10-11 23:56:11,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 2615 transitions. [2024-10-11 23:56:11,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6670918367346939 [2024-10-11 23:56:11,865 INFO L175 Difference]: Start difference. First operand has 249 places, 504 transitions, 5185 flow. Second operand 112 states and 2615 transitions. [2024-10-11 23:56:11,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 2357 transitions, 23831 flow [2024-10-11 23:56:14,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 2357 transitions, 23166 flow, removed 317 selfloop flow, removed 11 redundant places. [2024-10-11 23:56:14,643 INFO L231 Difference]: Finished difference. Result has 404 places, 1189 transitions, 15400 flow [2024-10-11 23:56:14,648 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4750, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=450, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=112, PETRI_FLOW=15400, PETRI_PLACES=404, PETRI_TRANSITIONS=1189} [2024-10-11 23:56:14,648 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 370 predicate places. [2024-10-11 23:56:14,648 INFO L471 AbstractCegarLoop]: Abstraction has has 404 places, 1189 transitions, 15400 flow [2024-10-11 23:56:14,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 15.35483870967742) internal successors, (476), 31 states have internal predecessors, (476), 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) [2024-10-11 23:56:14,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:56:14,648 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-11 23:56:14,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 23:56:14,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 23:56:14,849 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-11 23:56:14,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:56:14,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1457796694, now seen corresponding path program 1 times [2024-10-11 23:56:14,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:56:14,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475141993] [2024-10-11 23:56:14,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:14,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:56:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:15,506 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:15,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:56:15,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475141993] [2024-10-11 23:56:15,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475141993] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:56:15,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284324196] [2024-10-11 23:56:15,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:56:15,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:56:15,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:56:15,509 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:56:15,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 23:56:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:56:15,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-11 23:56:15,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:56:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:15,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:56:16,105 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:56:16,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284324196] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:56:16,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:56:16,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 40 [2024-10-11 23:56:16,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273283806] [2024-10-11 23:56:16,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:56:16,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-11 23:56:16,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:56:16,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-11 23:56:16,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=1252, Unknown=0, NotChecked=0, Total=1722 [2024-10-11 23:56:16,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-11 23:56:16,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 1189 transitions, 15400 flow. Second operand has 42 states, 42 states have (on average 15.119047619047619) internal successors, (635), 42 states have internal predecessors, (635), 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) [2024-10-11 23:56:16,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:56:16,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-11 23:56:16,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand