./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:04:49,903 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:04:49,994 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:04:50,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:04:50,001 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:04:50,031 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:04:50,032 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:04:50,033 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:04:50,033 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:04:50,035 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:04:50,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:04:50,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:04:50,037 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:04:50,037 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:04:50,037 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:04:50,038 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:04:50,038 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:04:50,039 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:04:50,039 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:04:50,040 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:04:50,040 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:04:50,043 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:04:50,044 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:04:50,044 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:04:50,044 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:04:50,044 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:04:50,045 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:04:50,045 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:04:50,045 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:04:50,045 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:04:50,045 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:04:50,046 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:04:50,046 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:04:50,046 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:04:50,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:04:50,047 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:04:50,047 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:04:50,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:04:50,049 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:04:50,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:04:50,049 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:04:50,049 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:04:50,050 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:04:50,050 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:04:50,050 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 [2024-11-19 14:04:50,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:04:50,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:04:50,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:04:50,315 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:04:50,315 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:04:50,316 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2024-11-19 14:04:51,765 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:04:51,959 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:04:51,959 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2024-11-19 14:04:51,966 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281fa1b55/d23973c4fb2c42e29c682740f188b87e/FLAG1cccf60f0 [2024-11-19 14:04:51,978 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281fa1b55/d23973c4fb2c42e29c682740f188b87e [2024-11-19 14:04:51,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:04:51,981 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:04:51,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:04:51,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:04:51,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:04:51,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:04:51" (1/1) ... [2024-11-19 14:04:51,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426ec000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:51, skipping insertion in model container [2024-11-19 14:04:51,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:04:51" (1/1) ... [2024-11-19 14:04:52,012 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:04:52,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:04:52,223 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:04:52,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:04:52,258 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:04:52,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:52 WrapperNode [2024-11-19 14:04:52,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:04:52,261 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:04:52,261 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:04:52,261 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:04:52,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:52" (1/1) ... [2024-11-19 14:04:52,274 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:52" (1/1) ... [2024-11-19 14:04:52,291 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 42 [2024-11-19 14:04:52,292 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:04:52,292 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:04:52,292 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:04:52,293 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:04:52,300 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:52" (1/1) ... [2024-11-19 14:04:52,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:52" (1/1) ... [2024-11-19 14:04:52,302 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:52" (1/1) ... [2024-11-19 14:04:52,314 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 14:04:52,314 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:52" (1/1) ... [2024-11-19 14:04:52,314 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:52" (1/1) ... [2024-11-19 14:04:52,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:52" (1/1) ... [2024-11-19 14:04:52,323 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:52" (1/1) ... [2024-11-19 14:04:52,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:52" (1/1) ... [2024-11-19 14:04:52,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:52" (1/1) ... [2024-11-19 14:04:52,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:04:52,328 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:04:52,328 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:04:52,328 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:04:52,329 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:52" (1/1) ... [2024-11-19 14:04:52,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:04:52,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:52,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:04:52,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:04:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:04:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:04:52,435 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:04:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:04:52,435 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:04:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:04:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:04:52,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:04:52,437 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:04:52,540 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:04:52,543 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:04:52,756 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:04:52,757 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:04:52,952 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:04:52,953 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 14:04:52,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:04:52 BoogieIcfgContainer [2024-11-19 14:04:52,954 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:04:52,984 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:04:52,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:04:52,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:04:52,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:04:51" (1/3) ... [2024-11-19 14:04:52,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3d9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:04:52, skipping insertion in model container [2024-11-19 14:04:52,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:52" (2/3) ... [2024-11-19 14:04:52,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3d9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:04:52, skipping insertion in model container [2024-11-19 14:04:52,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:04:52" (3/3) ... [2024-11-19 14:04:52,996 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2024-11-19 14:04:53,014 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:04:53,015 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-19 14:04:53,015 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:04:53,073 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 14:04:53,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 36 transitions, 86 flow [2024-11-19 14:04:53,152 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-19 14:04:53,156 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 14:04:53,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 34 events. 4/34 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 104 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-19 14:04:53,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 36 transitions, 86 flow [2024-11-19 14:04:53,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 73 flow [2024-11-19 14:04:53,179 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:04:53,187 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;@5f0a5043, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:04:53,188 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-19 14:04:53,198 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:04:53,199 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-11-19 14:04:53,199 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 14:04:53,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:53,200 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 14:04:53,201 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:04:53,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:53,207 INFO L85 PathProgramCache]: Analyzing trace with hash 639212003, now seen corresponding path program 1 times [2024-11-19 14:04:53,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:53,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347999296] [2024-11-19 14:04:53,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:53,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:53,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:53,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347999296] [2024-11-19 14:04:53,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347999296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:53,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:04:53,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:04:53,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740162432] [2024-11-19 14:04:53,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:53,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:04:53,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:53,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:04:53,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:04:53,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-19 14:04:53,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:53,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:53,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-19 14:04:53,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:53,714 INFO L124 PetriNetUnfolderBase]: 478/740 cut-off events. [2024-11-19 14:04:53,714 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-19 14:04:53,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 740 events. 478/740 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3373 event pairs, 68 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 1350. Up to 631 conditions per place. [2024-11-19 14:04:53,725 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 27 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2024-11-19 14:04:53,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 163 flow [2024-11-19 14:04:53,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:04:53,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:04:53,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-11-19 14:04:53,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-11-19 14:04:53,742 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 73 flow. Second operand 3 states and 76 transitions. [2024-11-19 14:04:53,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 163 flow [2024-11-19 14:04:53,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 42 transitions, 155 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:04:53,749 INFO L231 Difference]: Finished difference. Result has 35 places, 36 transitions, 115 flow [2024-11-19 14:04:53,751 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=35, PETRI_TRANSITIONS=36} [2024-11-19 14:04:53,755 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2024-11-19 14:04:53,758 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 115 flow [2024-11-19 14:04:53,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:53,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:53,759 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:53,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:04:53,759 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:04:53,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:53,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1853728535, now seen corresponding path program 1 times [2024-11-19 14:04:53,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:53,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975146384] [2024-11-19 14:04:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:53,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:53,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:53,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975146384] [2024-11-19 14:04:53,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975146384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:04:53,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867928614] [2024-11-19 14:04:53,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:53,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:53,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:53,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:04:53,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:04:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:54,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:04:54,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:04:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:54,068 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:04:54,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867928614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:54,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:04:54,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-19 14:04:54,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652711514] [2024-11-19 14:04:54,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:54,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:04:54,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:54,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:04:54,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:04:54,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-19 14:04:54,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:54,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:54,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-19 14:04:54,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:54,190 INFO L124 PetriNetUnfolderBase]: 294/495 cut-off events. [2024-11-19 14:04:54,191 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-11-19 14:04:54,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 495 events. 294/495 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2329 event pairs, 137 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 488. Up to 432 conditions per place. [2024-11-19 14:04:54,199 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 23 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2024-11-19 14:04:54,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 155 flow [2024-11-19 14:04:54,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:04:54,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:04:54,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-11-19 14:04:54,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-11-19 14:04:54,201 INFO L175 Difference]: Start difference. First operand has 35 places, 36 transitions, 115 flow. Second operand 3 states and 58 transitions. [2024-11-19 14:04:54,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 155 flow [2024-11-19 14:04:54,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:04:54,203 INFO L231 Difference]: Finished difference. Result has 34 places, 34 transitions, 104 flow [2024-11-19 14:04:54,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2024-11-19 14:04:54,204 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-11-19 14:04:54,206 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 104 flow [2024-11-19 14:04:54,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:54,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:54,206 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:54,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:04:54,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:54,411 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:04:54,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:54,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1853728536, now seen corresponding path program 1 times [2024-11-19 14:04:54,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:54,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847820368] [2024-11-19 14:04:54,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:54,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:54,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:54,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:54,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847820368] [2024-11-19 14:04:54,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847820368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:04:54,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833231970] [2024-11-19 14:04:54,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:54,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:54,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:54,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:04:54,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:04:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:54,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:04:54,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:04:54,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:54,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:04:54,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:54,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833231970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:04:54,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:04:54,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-19 14:04:54,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826095526] [2024-11-19 14:04:54,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:04:54,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 14:04:54,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:54,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 14:04:54,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 14:04:54,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-19 14:04:54,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 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) [2024-11-19 14:04:54,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:54,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-19 14:04:54,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:54,956 INFO L124 PetriNetUnfolderBase]: 947/1628 cut-off events. [2024-11-19 14:04:54,956 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-11-19 14:04:54,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3720 conditions, 1628 events. 947/1628 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8004 event pairs, 29 based on Foata normal form. 0/1210 useless extension candidates. Maximal degree in co-relation 3712. Up to 731 conditions per place. [2024-11-19 14:04:54,970 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 62 selfloop transitions, 25 changer transitions 0/97 dead transitions. [2024-11-19 14:04:54,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 97 transitions, 469 flow [2024-11-19 14:04:54,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 14:04:54,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 14:04:54,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-11-19 14:04:54,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2024-11-19 14:04:54,975 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 104 flow. Second operand 7 states and 186 transitions. [2024-11-19 14:04:54,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 97 transitions, 469 flow [2024-11-19 14:04:54,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 97 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:04:54,978 INFO L231 Difference]: Finished difference. Result has 43 places, 54 transitions, 318 flow [2024-11-19 14:04:54,978 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=43, PETRI_TRANSITIONS=54} [2024-11-19 14:04:54,979 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2024-11-19 14:04:54,979 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 54 transitions, 318 flow [2024-11-19 14:04:54,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 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) [2024-11-19 14:04:54,980 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:54,980 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:54,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 14:04:55,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-19 14:04:55,187 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:04:55,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:55,187 INFO L85 PathProgramCache]: Analyzing trace with hash -2061984144, now seen corresponding path program 1 times [2024-11-19 14:04:55,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:55,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378731754] [2024-11-19 14:04:55,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:55,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:55,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:55,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378731754] [2024-11-19 14:04:55,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378731754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:55,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:04:55,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:04:55,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964459284] [2024-11-19 14:04:55,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:55,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:04:55,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:55,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:04:55,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:04:55,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-19 14:04:55,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 54 transitions, 318 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) [2024-11-19 14:04:55,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:55,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-19 14:04:55,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:55,550 INFO L124 PetriNetUnfolderBase]: 1512/2671 cut-off events. [2024-11-19 14:04:55,550 INFO L125 PetriNetUnfolderBase]: For 6560/6560 co-relation queries the response was YES. [2024-11-19 14:04:55,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8376 conditions, 2671 events. 1512/2671 cut-off events. For 6560/6560 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14698 event pairs, 98 based on Foata normal form. 131/2592 useless extension candidates. Maximal degree in co-relation 8363. Up to 1247 conditions per place. [2024-11-19 14:04:55,574 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 63 selfloop transitions, 15 changer transitions 0/88 dead transitions. [2024-11-19 14:04:55,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 88 transitions, 675 flow [2024-11-19 14:04:55,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:04:55,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:04:55,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-19 14:04:55,578 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-19 14:04:55,579 INFO L175 Difference]: Start difference. First operand has 43 places, 54 transitions, 318 flow. Second operand 4 states and 96 transitions. [2024-11-19 14:04:55,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 88 transitions, 675 flow [2024-11-19 14:04:55,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 88 transitions, 650 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-11-19 14:04:55,595 INFO L231 Difference]: Finished difference. Result has 47 places, 64 transitions, 486 flow [2024-11-19 14:04:55,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=486, PETRI_PLACES=47, PETRI_TRANSITIONS=64} [2024-11-19 14:04:55,596 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2024-11-19 14:04:55,597 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 64 transitions, 486 flow [2024-11-19 14:04:55,597 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) [2024-11-19 14:04:55,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:55,597 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:55,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:04:55,597 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:04:55,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:55,598 INFO L85 PathProgramCache]: Analyzing trace with hash 373722710, now seen corresponding path program 1 times [2024-11-19 14:04:55,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:55,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44237545] [2024-11-19 14:04:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:55,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:55,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:55,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44237545] [2024-11-19 14:04:55,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44237545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:04:55,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511840488] [2024-11-19 14:04:55,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:55,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:55,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:55,689 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:04:55,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:04:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:55,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:04:55,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:04:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:55,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:04:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:55,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511840488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:04:55,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:04:55,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-19 14:04:55,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649109758] [2024-11-19 14:04:55,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:04:55,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 14:04:55,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:55,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 14:04:55,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-19 14:04:55,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-19 14:04:55,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 64 transitions, 486 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:55,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:55,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-19 14:04:55,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:57,026 INFO L124 PetriNetUnfolderBase]: 5374/9675 cut-off events. [2024-11-19 14:04:57,026 INFO L125 PetriNetUnfolderBase]: For 41278/41278 co-relation queries the response was YES. [2024-11-19 14:04:57,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32642 conditions, 9675 events. 5374/9675 cut-off events. For 41278/41278 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 63589 event pairs, 322 based on Foata normal form. 683/9647 useless extension candidates. Maximal degree in co-relation 32626. Up to 3382 conditions per place. [2024-11-19 14:04:57,121 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 140 selfloop transitions, 99 changer transitions 0/249 dead transitions. [2024-11-19 14:04:57,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 249 transitions, 2350 flow [2024-11-19 14:04:57,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 14:04:57,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 14:04:57,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-11-19 14:04:57,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2024-11-19 14:04:57,125 INFO L175 Difference]: Start difference. First operand has 47 places, 64 transitions, 486 flow. Second operand 9 states and 246 transitions. [2024-11-19 14:04:57,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 249 transitions, 2350 flow [2024-11-19 14:04:57,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 249 transitions, 2345 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:04:57,152 INFO L231 Difference]: Finished difference. Result has 60 places, 161 transitions, 2029 flow [2024-11-19 14:04:57,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2029, PETRI_PLACES=60, PETRI_TRANSITIONS=161} [2024-11-19 14:04:57,153 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 25 predicate places. [2024-11-19 14:04:57,155 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 161 transitions, 2029 flow [2024-11-19 14:04:57,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:57,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:57,155 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:57,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:04:57,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:57,356 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:04:57,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:57,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1092518769, now seen corresponding path program 1 times [2024-11-19 14:04:57,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:57,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866142813] [2024-11-19 14:04:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:57,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:57,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:57,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:57,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866142813] [2024-11-19 14:04:57,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866142813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:04:57,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606155959] [2024-11-19 14:04:57,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:57,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:57,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:57,488 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:04:57,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:04:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:57,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:04:57,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:04:57,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:57,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:04:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:04:57,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606155959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:04:57,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:04:57,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-19 14:04:57,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170619762] [2024-11-19 14:04:57,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:04:57,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 14:04:57,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:57,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 14:04:57,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-19 14:04:57,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-19 14:04:57,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 161 transitions, 2029 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:57,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:57,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-19 14:04:57,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:05:00,995 INFO L124 PetriNetUnfolderBase]: 14061/26142 cut-off events. [2024-11-19 14:05:00,996 INFO L125 PetriNetUnfolderBase]: For 245195/245195 co-relation queries the response was YES. [2024-11-19 14:05:01,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95669 conditions, 26142 events. 14061/26142 cut-off events. For 245195/245195 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 208426 event pairs, 447 based on Foata normal form. 2675/26906 useless extension candidates. Maximal degree in co-relation 95646. Up to 8565 conditions per place. [2024-11-19 14:05:01,214 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 216 selfloop transitions, 308 changer transitions 0/534 dead transitions. [2024-11-19 14:05:01,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 534 transitions, 7270 flow [2024-11-19 14:05:01,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 14:05:01,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 14:05:01,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-11-19 14:05:01,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2024-11-19 14:05:01,218 INFO L175 Difference]: Start difference. First operand has 60 places, 161 transitions, 2029 flow. Second operand 9 states and 246 transitions. [2024-11-19 14:05:01,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 534 transitions, 7270 flow [2024-11-19 14:05:01,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 534 transitions, 6857 flow, removed 204 selfloop flow, removed 1 redundant places. [2024-11-19 14:05:01,419 INFO L231 Difference]: Finished difference. Result has 73 places, 435 transitions, 6845 flow [2024-11-19 14:05:01,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1932, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6845, PETRI_PLACES=73, PETRI_TRANSITIONS=435} [2024-11-19 14:05:01,420 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 38 predicate places. [2024-11-19 14:05:01,420 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 435 transitions, 6845 flow [2024-11-19 14:05:01,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:01,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:01,420 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:05:01,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 14:05:01,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:05:01,621 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:05:01,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:01,622 INFO L85 PathProgramCache]: Analyzing trace with hash 395103729, now seen corresponding path program 1 times [2024-11-19 14:05:01,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:01,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563811916] [2024-11-19 14:05:01,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:01,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:01,750 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:01,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:01,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563811916] [2024-11-19 14:05:01,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563811916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:05:01,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601196512] [2024-11-19 14:05:01,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:01,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:05:01,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:05:01,754 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:05:01,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:05:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:01,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 14:05:01,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:05:01,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:01,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:05:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:01,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601196512] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:05:01,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:05:01,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:05:01,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749466604] [2024-11-19 14:05:01,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:05:01,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 14:05:01,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:01,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 14:05:01,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 14:05:01,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-19 14:05:01,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 435 transitions, 6845 flow. Second operand has 13 states, 13 states have (on average 14.23076923076923) internal successors, (185), 13 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:01,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:01,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-19 14:05:01,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:05:14,611 INFO L124 PetriNetUnfolderBase]: 49907/93718 cut-off events. [2024-11-19 14:05:14,613 INFO L125 PetriNetUnfolderBase]: For 1179026/1179026 co-relation queries the response was YES. [2024-11-19 14:05:15,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379418 conditions, 93718 events. 49907/93718 cut-off events. For 1179026/1179026 co-relation queries the response was YES. Maximal size of possible extension queue 1633. Compared 888015 event pairs, 2628 based on Foata normal form. 3905/90336 useless extension candidates. Maximal degree in co-relation 379388. Up to 26422 conditions per place. [2024-11-19 14:05:15,626 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 535 selfloop transitions, 1465 changer transitions 0/2010 dead transitions. [2024-11-19 14:05:15,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 2010 transitions, 34019 flow [2024-11-19 14:05:15,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 14:05:15,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 14:05:15,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 366 transitions. [2024-11-19 14:05:15,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.782051282051282 [2024-11-19 14:05:15,629 INFO L175 Difference]: Start difference. First operand has 73 places, 435 transitions, 6845 flow. Second operand 13 states and 366 transitions. [2024-11-19 14:05:15,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 2010 transitions, 34019 flow [2024-11-19 14:05:20,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 2010 transitions, 32712 flow, removed 651 selfloop flow, removed 1 redundant places. [2024-11-19 14:05:20,362 INFO L231 Difference]: Finished difference. Result has 94 places, 1733 transitions, 32338 flow [2024-11-19 14:05:20,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6648, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=323, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=32338, PETRI_PLACES=94, PETRI_TRANSITIONS=1733} [2024-11-19 14:05:20,364 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 59 predicate places. [2024-11-19 14:05:20,364 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 1733 transitions, 32338 flow [2024-11-19 14:05:20,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.23076923076923) internal successors, (185), 13 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:20,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:05:20,365 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:05:20,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 14:05:20,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:05:20,566 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-19 14:05:20,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:05:20,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1832964784, now seen corresponding path program 1 times [2024-11-19 14:05:20,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:05:20,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082247439] [2024-11-19 14:05:20,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:20,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:05:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:20,779 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:20,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:05:20,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082247439] [2024-11-19 14:05:20,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082247439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:05:20,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045460587] [2024-11-19 14:05:20,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:05:20,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:05:20,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:05:20,786 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:05:20,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:05:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:05:20,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 14:05:20,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:05:20,913 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:20,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:05:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:05:21,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045460587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:05:21,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:05:21,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-19 14:05:21,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115063278] [2024-11-19 14:05:21,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:05:21,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 14:05:21,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:05:21,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 14:05:21,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-19 14:05:21,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-19 14:05:21,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 1733 transitions, 32338 flow. Second operand has 15 states, 15 states have (on average 14.2) internal successors, (213), 15 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:05:21,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:05:21,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-19 14:05:21,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand