./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-figure1-alt.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 e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:25:32,973 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:25:33,039 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:25:33,044 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:25:33,054 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:25:33,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:25:33,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:25:33,081 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:25:33,082 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:25:33,082 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:25:33,082 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:25:33,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:25:33,083 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:25:33,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:25:33,083 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:25:33,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:25:33,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:25:33,084 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:25:33,084 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:25:33,084 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:25:33,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:25:33,085 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:25:33,085 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:25:33,085 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:25:33,085 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:25:33,086 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:25:33,086 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:25:33,086 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:25:33,086 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:25:33,086 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:25:33,087 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:25:33,087 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:25:33,087 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:25:33,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:25:33,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:25:33,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:25:33,088 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:25:33,088 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:25:33,088 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:25:33,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:25:33,089 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:25:33,089 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:25:33,089 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:25:33,089 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:25:33,089 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c [2024-11-10 22:25:33,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:25:33,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:25:33,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:25:33,365 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:25:33,366 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:25:33,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-11-10 22:25:34,683 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:25:34,814 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:25:34,814 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-11-10 22:25:34,821 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/484fbff01/df91ab361d964c009610174317be293e/FLAGc8e134f09 [2024-11-10 22:25:34,832 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/484fbff01/df91ab361d964c009610174317be293e [2024-11-10 22:25:34,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:25:34,835 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:25:34,836 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:25:34,837 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:25:34,841 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:25:34,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:25:34" (1/1) ... [2024-11-10 22:25:34,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@488d358d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:34, skipping insertion in model container [2024-11-10 22:25:34,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:25:34" (1/1) ... [2024-11-10 22:25:34,859 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:25:35,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:25:35,008 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:25:35,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:25:35,033 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:25:35,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:35 WrapperNode [2024-11-10 22:25:35,034 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:25:35,035 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:25:35,035 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:25:35,035 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:25:35,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:35" (1/1) ... [2024-11-10 22:25:35,045 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:35" (1/1) ... [2024-11-10 22:25:35,058 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 73 [2024-11-10 22:25:35,059 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:25:35,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:25:35,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:25:35,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:25:35,068 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:35" (1/1) ... [2024-11-10 22:25:35,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:35" (1/1) ... [2024-11-10 22:25:35,069 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:35" (1/1) ... [2024-11-10 22:25:35,079 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]. [2024-11-10 22:25:35,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:35" (1/1) ... [2024-11-10 22:25:35,079 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:35" (1/1) ... [2024-11-10 22:25:35,082 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:35" (1/1) ... [2024-11-10 22:25:35,082 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:35" (1/1) ... [2024-11-10 22:25:35,083 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:35" (1/1) ... [2024-11-10 22:25:35,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:35" (1/1) ... [2024-11-10 22:25:35,085 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:25:35,086 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:25:35,086 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:25:35,086 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:25:35,086 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:35" (1/1) ... [2024-11-10 22:25:35,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:25:35,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:35,128 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) [2024-11-10 22:25:35,132 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 [2024-11-10 22:25:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:25:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:25:35,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:25:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:25:35,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:25:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:25:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:25:35,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:25:35,178 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:25:35,263 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:25:35,265 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:25:35,464 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:25:35,465 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:25:35,558 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:25:35,558 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:25:35,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:25:35 BoogieIcfgContainer [2024-11-10 22:25:35,559 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:25:35,560 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:25:35,561 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:25:35,563 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:25:35,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:25:34" (1/3) ... [2024-11-10 22:25:35,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440014fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:25:35, skipping insertion in model container [2024-11-10 22:25:35,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:35" (2/3) ... [2024-11-10 22:25:35,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440014fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:25:35, skipping insertion in model container [2024-11-10 22:25:35,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:25:35" (3/3) ... [2024-11-10 22:25:35,568 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2024-11-10 22:25:35,592 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:25:35,592 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-10 22:25:35,593 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:25:35,650 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 22:25:35,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 41 transitions, 96 flow [2024-11-10 22:25:35,702 INFO L124 PetriNetUnfolderBase]: 4/39 cut-off events. [2024-11-10 22:25:35,702 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 22:25:35,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 39 events. 4/39 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 89 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-10 22:25:35,707 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 41 transitions, 96 flow [2024-11-10 22:25:35,711 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 38 transitions, 88 flow [2024-11-10 22:25:35,723 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:25:35,730 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;@10b3c6bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:25:35,731 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-10 22:25:35,739 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:25:35,739 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2024-11-10 22:25:35,739 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:25:35,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:35,740 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:25:35,742 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:35,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:35,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1028974730, now seen corresponding path program 1 times [2024-11-10 22:25:35,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:35,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255130274] [2024-11-10 22:25:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:35,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:35,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:35,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:35,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255130274] [2024-11-10 22:25:35,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255130274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:35,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:35,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:25:35,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083861827] [2024-11-10 22:25:35,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:35,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:35,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:36,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:36,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:25:36,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-10 22:25:36,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-10 22:25:36,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:36,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-10 22:25:36,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:36,148 INFO L124 PetriNetUnfolderBase]: 194/442 cut-off events. [2024-11-10 22:25:36,149 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-10 22:25:36,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 819 conditions, 442 events. 194/442 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2280 event pairs, 77 based on Foata normal form. 50/388 useless extension candidates. Maximal degree in co-relation 744. Up to 290 conditions per place. [2024-11-10 22:25:36,153 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 29 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-11-10 22:25:36,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 173 flow [2024-11-10 22:25:36,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:36,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:36,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-11-10 22:25:36,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6991869918699187 [2024-11-10 22:25:36,172 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 88 flow. Second operand 3 states and 86 transitions. [2024-11-10 22:25:36,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 173 flow [2024-11-10 22:25:36,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 159 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:25:36,180 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 92 flow [2024-11-10 22:25:36,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2024-11-10 22:25:36,186 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2024-11-10 22:25:36,187 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 92 flow [2024-11-10 22:25:36,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-10 22:25:36,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:36,187 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:36,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:25:36,188 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:36,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:36,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1002227462, now seen corresponding path program 1 times [2024-11-10 22:25:36,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:36,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478452001] [2024-11-10 22:25:36,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:36,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:36,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:36,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:36,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478452001] [2024-11-10 22:25:36,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478452001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:36,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:36,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:25:36,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526353497] [2024-11-10 22:25:36,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:36,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:25:36,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:36,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:25:36,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:25:36,271 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-10 22:25:36,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2024-11-10 22:25:36,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:36,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-10 22:25:36,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:36,419 INFO L124 PetriNetUnfolderBase]: 298/623 cut-off events. [2024-11-10 22:25:36,419 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-10 22:25:36,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 623 events. 298/623 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3325 event pairs, 127 based on Foata normal form. 18/493 useless extension candidates. Maximal degree in co-relation 564. Up to 422 conditions per place. [2024-11-10 22:25:36,427 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 46 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2024-11-10 22:25:36,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 248 flow [2024-11-10 22:25:36,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:25:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:25:36,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-10 22:25:36,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2024-11-10 22:25:36,429 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 92 flow. Second operand 4 states and 108 transitions. [2024-11-10 22:25:36,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 248 flow [2024-11-10 22:25:36,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:36,435 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 119 flow [2024-11-10 22:25:36,435 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2024-11-10 22:25:36,436 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-11-10 22:25:36,439 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 119 flow [2024-11-10 22:25:36,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2024-11-10 22:25:36,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:36,440 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:36,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:25:36,440 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:36,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:36,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1323249341, now seen corresponding path program 1 times [2024-11-10 22:25:36,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:36,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995436863] [2024-11-10 22:25:36,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:36,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:36,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:36,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:36,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995436863] [2024-11-10 22:25:36,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995436863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:36,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:36,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:25:36,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303199269] [2024-11-10 22:25:36,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:36,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:36,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:36,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:36,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:25:36,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-10 22:25:36,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:36,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:36,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-10 22:25:36,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:36,615 INFO L124 PetriNetUnfolderBase]: 221/539 cut-off events. [2024-11-10 22:25:36,615 INFO L125 PetriNetUnfolderBase]: For 166/172 co-relation queries the response was YES. [2024-11-10 22:25:36,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 539 events. 221/539 cut-off events. For 166/172 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2969 event pairs, 133 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 371. Up to 286 conditions per place. [2024-11-10 22:25:36,618 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 38 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2024-11-10 22:25:36,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 252 flow [2024-11-10 22:25:36,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:36,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:36,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-10 22:25:36,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6910569105691057 [2024-11-10 22:25:36,620 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 119 flow. Second operand 3 states and 85 transitions. [2024-11-10 22:25:36,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 252 flow [2024-11-10 22:25:36,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:36,622 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 140 flow [2024-11-10 22:25:36,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=42, 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=3, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-11-10 22:25:36,623 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2024-11-10 22:25:36,623 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 140 flow [2024-11-10 22:25:36,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:25:36,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:36,623 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:36,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:25:36,624 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:36,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:36,624 INFO L85 PathProgramCache]: Analyzing trace with hash 496841598, now seen corresponding path program 1 times [2024-11-10 22:25:36,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:36,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080476720] [2024-11-10 22:25:36,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:36,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:36,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:36,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080476720] [2024-11-10 22:25:36,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080476720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:36,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:36,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:25:36,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313709076] [2024-11-10 22:25:36,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:36,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:25:36,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:36,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:25:36,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:25:36,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-10 22:25:36,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-10 22:25:36,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:36,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-10 22:25:36,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:36,787 INFO L124 PetriNetUnfolderBase]: 272/648 cut-off events. [2024-11-10 22:25:36,787 INFO L125 PetriNetUnfolderBase]: For 499/501 co-relation queries the response was YES. [2024-11-10 22:25:36,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1536 conditions, 648 events. 272/648 cut-off events. For 499/501 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3467 event pairs, 56 based on Foata normal form. 25/621 useless extension candidates. Maximal degree in co-relation 720. Up to 237 conditions per place. [2024-11-10 22:25:36,791 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 44 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2024-11-10 22:25:36,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 302 flow [2024-11-10 22:25:36,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:25:36,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:25:36,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-11-10 22:25:36,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2024-11-10 22:25:36,793 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 140 flow. Second operand 4 states and 112 transitions. [2024-11-10 22:25:36,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 302 flow [2024-11-10 22:25:36,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:25:36,795 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 168 flow [2024-11-10 22:25:36,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2024-11-10 22:25:36,797 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2024-11-10 22:25:36,797 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 168 flow [2024-11-10 22:25:36,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-10 22:25:36,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:36,798 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:36,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:25:36,798 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:36,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:36,800 INFO L85 PathProgramCache]: Analyzing trace with hash 236201551, now seen corresponding path program 1 times [2024-11-10 22:25:36,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:36,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548833905] [2024-11-10 22:25:36,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:36,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:36,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:36,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:36,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548833905] [2024-11-10 22:25:36,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548833905] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:36,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317423453] [2024-11-10 22:25:36,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:36,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:36,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:36,871 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) [2024-11-10 22:25:36,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:25:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:36,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:25:36,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:36,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:36,971 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:36,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317423453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:36,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:36,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-10 22:25:36,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041089112] [2024-11-10 22:25:36,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:36,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:36,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:36,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:36,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:25:36,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-10 22:25:36,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-10 22:25:36,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:36,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-10 22:25:36,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:37,030 INFO L124 PetriNetUnfolderBase]: 242/617 cut-off events. [2024-11-10 22:25:37,030 INFO L125 PetriNetUnfolderBase]: For 672/684 co-relation queries the response was YES. [2024-11-10 22:25:37,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 617 events. 242/617 cut-off events. For 672/684 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3392 event pairs, 202 based on Foata normal form. 24/576 useless extension candidates. Maximal degree in co-relation 673. Up to 430 conditions per place. [2024-11-10 22:25:37,035 INFO L140 encePairwiseOnDemand]: 39/41 looper letters, 26 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2024-11-10 22:25:37,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 204 flow [2024-11-10 22:25:37,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:37,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:37,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-10 22:25:37,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2024-11-10 22:25:37,038 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 168 flow. Second operand 3 states and 69 transitions. [2024-11-10 22:25:37,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 204 flow [2024-11-10 22:25:37,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 41 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:25:37,041 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 146 flow [2024-11-10 22:25:37,041 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-11-10 22:25:37,042 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2024-11-10 22:25:37,042 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 146 flow [2024-11-10 22:25:37,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-10 22:25:37,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:37,046 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:37,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:25:37,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:37,247 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:37,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:37,248 INFO L85 PathProgramCache]: Analyzing trace with hash 203348907, now seen corresponding path program 1 times [2024-11-10 22:25:37,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:37,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072107009] [2024-11-10 22:25:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:37,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:37,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:37,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072107009] [2024-11-10 22:25:37,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072107009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:37,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:37,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:25:37,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793998787] [2024-11-10 22:25:37,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:37,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:25:37,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:37,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:25:37,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:25:37,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-10 22:25:37,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 146 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) [2024-11-10 22:25:37,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:37,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-10 22:25:37,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:37,537 INFO L124 PetriNetUnfolderBase]: 456/999 cut-off events. [2024-11-10 22:25:37,537 INFO L125 PetriNetUnfolderBase]: For 720/770 co-relation queries the response was YES. [2024-11-10 22:25:37,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2399 conditions, 999 events. 456/999 cut-off events. For 720/770 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5556 event pairs, 246 based on Foata normal form. 22/953 useless extension candidates. Maximal degree in co-relation 2387. Up to 540 conditions per place. [2024-11-10 22:25:37,543 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 56 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2024-11-10 22:25:37,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 408 flow [2024-11-10 22:25:37,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:25:37,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:25:37,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-11-10 22:25:37,545 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6158536585365854 [2024-11-10 22:25:37,545 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 146 flow. Second operand 4 states and 101 transitions. [2024-11-10 22:25:37,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 408 flow [2024-11-10 22:25:37,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 407 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:37,548 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 174 flow [2024-11-10 22:25:37,548 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-11-10 22:25:37,549 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-11-10 22:25:37,550 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 174 flow [2024-11-10 22:25:37,550 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) [2024-11-10 22:25:37,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:37,550 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:37,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:25:37,550 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:37,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:37,551 INFO L85 PathProgramCache]: Analyzing trace with hash -643566189, now seen corresponding path program 1 times [2024-11-10 22:25:37,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:37,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307549517] [2024-11-10 22:25:37,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:37,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:37,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:37,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307549517] [2024-11-10 22:25:37,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307549517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:37,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420512492] [2024-11-10 22:25:37,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:37,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:37,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:37,630 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) [2024-11-10 22:25:37,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:25:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:37,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:25:37,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:37,741 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:37,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420512492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:37,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:37,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:25:37,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14495332] [2024-11-10 22:25:37,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:37,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:25:37,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:37,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:25:37,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:25:37,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-10 22:25:37,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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) [2024-11-10 22:25:37,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:37,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-10 22:25:37,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:37,941 INFO L124 PetriNetUnfolderBase]: 436/992 cut-off events. [2024-11-10 22:25:37,941 INFO L125 PetriNetUnfolderBase]: For 928/980 co-relation queries the response was YES. [2024-11-10 22:25:37,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2586 conditions, 992 events. 436/992 cut-off events. For 928/980 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5466 event pairs, 52 based on Foata normal form. 26/924 useless extension candidates. Maximal degree in co-relation 2572. Up to 294 conditions per place. [2024-11-10 22:25:37,946 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 74 selfloop transitions, 7 changer transitions 0/93 dead transitions. [2024-11-10 22:25:37,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 93 transitions, 540 flow [2024-11-10 22:25:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:25:37,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:25:37,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-11-10 22:25:37,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6016260162601627 [2024-11-10 22:25:37,947 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 174 flow. Second operand 6 states and 148 transitions. [2024-11-10 22:25:37,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 93 transitions, 540 flow [2024-11-10 22:25:37,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 93 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:37,951 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 181 flow [2024-11-10 22:25:37,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2024-11-10 22:25:37,952 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-11-10 22:25:37,952 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 181 flow [2024-11-10 22:25:37,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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) [2024-11-10 22:25:37,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:37,952 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-10 22:25:37,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:25:38,152 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,SelfDestructingSolverStorable6 [2024-11-10 22:25:38,153 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:38,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:38,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1524284845, now seen corresponding path program 1 times [2024-11-10 22:25:38,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:38,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806284764] [2024-11-10 22:25:38,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:38,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:38,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:38,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:38,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806284764] [2024-11-10 22:25:38,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806284764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:38,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48193871] [2024-11-10 22:25:38,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:38,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:38,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:38,209 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) [2024-11-10 22:25:38,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:25:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:38,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:25:38,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:38,297 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:38,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48193871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:38,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:38,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:25:38,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82601627] [2024-11-10 22:25:38,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:38,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:25:38,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:38,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:25:38,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:25:38,360 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-10 22:25:38,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 181 flow. Second operand has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 12 states have internal predecessors, (188), 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) [2024-11-10 22:25:38,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:38,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-10 22:25:38,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:38,678 INFO L124 PetriNetUnfolderBase]: 900/2012 cut-off events. [2024-11-10 22:25:38,678 INFO L125 PetriNetUnfolderBase]: For 2574/2650 co-relation queries the response was YES. [2024-11-10 22:25:38,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5507 conditions, 2012 events. 900/2012 cut-off events. For 2574/2650 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 11819 event pairs, 130 based on Foata normal form. 78/1971 useless extension candidates. Maximal degree in co-relation 5493. Up to 631 conditions per place. [2024-11-10 22:25:38,689 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 137 selfloop transitions, 13 changer transitions 0/162 dead transitions. [2024-11-10 22:25:38,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 162 transitions, 991 flow [2024-11-10 22:25:38,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:25:38,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:25:38,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-11-10 22:25:38,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-11-10 22:25:38,690 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 181 flow. Second operand 10 states and 260 transitions. [2024-11-10 22:25:38,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 162 transitions, 991 flow [2024-11-10 22:25:38,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 162 transitions, 961 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-10 22:25:38,695 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 249 flow [2024-11-10 22:25:38,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=249, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-11-10 22:25:38,696 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-11-10 22:25:38,696 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 249 flow [2024-11-10 22:25:38,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 12 states have internal predecessors, (188), 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) [2024-11-10 22:25:38,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:38,696 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:38,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:25:38,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:38,898 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:38,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:38,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1533244685, now seen corresponding path program 1 times [2024-11-10 22:25:38,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:38,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860866254] [2024-11-10 22:25:38,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:38,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:38,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:38,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860866254] [2024-11-10 22:25:38,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860866254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:38,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:38,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:25:38,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298854956] [2024-11-10 22:25:38,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:38,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:38,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:38,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:38,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:25:38,931 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-10 22:25:38,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2024-11-10 22:25:38,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:38,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-10 22:25:38,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:39,121 INFO L124 PetriNetUnfolderBase]: 860/1970 cut-off events. [2024-11-10 22:25:39,121 INFO L125 PetriNetUnfolderBase]: For 3072/3120 co-relation queries the response was YES. [2024-11-10 22:25:39,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5563 conditions, 1970 events. 860/1970 cut-off events. For 3072/3120 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 12014 event pairs, 684 based on Foata normal form. 3/1854 useless extension candidates. Maximal degree in co-relation 5547. Up to 1430 conditions per place. [2024-11-10 22:25:39,130 INFO L140 encePairwiseOnDemand]: 39/41 looper letters, 39 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2024-11-10 22:25:39,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 51 transitions, 327 flow [2024-11-10 22:25:39,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:39,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:39,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-11-10 22:25:39,131 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5203252032520326 [2024-11-10 22:25:39,131 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 249 flow. Second operand 3 states and 64 transitions. [2024-11-10 22:25:39,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 51 transitions, 327 flow [2024-11-10 22:25:39,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 51 transitions, 316 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-10 22:25:39,135 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 238 flow [2024-11-10 22:25:39,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-11-10 22:25:39,136 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-11-10 22:25:39,137 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 238 flow [2024-11-10 22:25:39,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2024-11-10 22:25:39,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:39,137 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:39,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:25:39,137 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:39,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:39,137 INFO L85 PathProgramCache]: Analyzing trace with hash -868820374, now seen corresponding path program 1 times [2024-11-10 22:25:39,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:39,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25157737] [2024-11-10 22:25:39,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:39,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:39,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:39,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:39,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25157737] [2024-11-10 22:25:39,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25157737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:39,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:39,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:25:39,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285336971] [2024-11-10 22:25:39,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:39,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:39,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:39,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:39,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:25:39,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-10 22:25:39,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2024-11-10 22:25:39,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:39,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-10 22:25:39,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:39,301 INFO L124 PetriNetUnfolderBase]: 860/1967 cut-off events. [2024-11-10 22:25:39,301 INFO L125 PetriNetUnfolderBase]: For 2714/2762 co-relation queries the response was YES. [2024-11-10 22:25:39,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5451 conditions, 1967 events. 860/1967 cut-off events. For 2714/2762 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 11995 event pairs, 684 based on Foata normal form. 3/1851 useless extension candidates. Maximal degree in co-relation 5433. Up to 1427 conditions per place. [2024-11-10 22:25:39,309 INFO L140 encePairwiseOnDemand]: 39/41 looper letters, 36 selfloop transitions, 1 changer transitions 3/50 dead transitions. [2024-11-10 22:25:39,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 50 transitions, 314 flow [2024-11-10 22:25:39,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:39,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:39,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-11-10 22:25:39,310 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2024-11-10 22:25:39,310 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 238 flow. Second operand 3 states and 63 transitions. [2024-11-10 22:25:39,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 50 transitions, 314 flow [2024-11-10 22:25:39,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 50 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:39,314 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 228 flow [2024-11-10 22:25:39,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2024-11-10 22:25:39,314 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-11-10 22:25:39,314 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 228 flow [2024-11-10 22:25:39,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2024-11-10 22:25:39,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:39,315 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:39,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:25:39,315 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:39,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:39,315 INFO L85 PathProgramCache]: Analyzing trace with hash -562719419, now seen corresponding path program 1 times [2024-11-10 22:25:39,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:39,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904964766] [2024-11-10 22:25:39,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:39,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:39,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:39,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904964766] [2024-11-10 22:25:39,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904964766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:39,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957772506] [2024-11-10 22:25:39,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:39,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:39,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:39,372 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) [2024-11-10 22:25:39,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:25:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:39,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:25:39,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:39,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:39,445 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:39,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957772506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:39,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:39,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2024-11-10 22:25:39,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606245172] [2024-11-10 22:25:39,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:39,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:25:39,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:39,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:25:39,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:25:39,447 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-10 22:25:39,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-11-10 22:25:39,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:39,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-10 22:25:39,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:39,570 INFO L124 PetriNetUnfolderBase]: 749/1730 cut-off events. [2024-11-10 22:25:39,570 INFO L125 PetriNetUnfolderBase]: For 2409/2441 co-relation queries the response was YES. [2024-11-10 22:25:39,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4783 conditions, 1730 events. 749/1730 cut-off events. For 2409/2441 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 10287 event pairs, 585 based on Foata normal form. 62/1696 useless extension candidates. Maximal degree in co-relation 4764. Up to 1240 conditions per place. [2024-11-10 22:25:39,578 INFO L140 encePairwiseOnDemand]: 39/41 looper letters, 35 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2024-11-10 22:25:39,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 46 transitions, 296 flow [2024-11-10 22:25:39,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:39,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:39,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-11-10 22:25:39,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5447154471544715 [2024-11-10 22:25:39,579 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 228 flow. Second operand 3 states and 67 transitions. [2024-11-10 22:25:39,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 46 transitions, 296 flow [2024-11-10 22:25:39,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 46 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:39,582 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 225 flow [2024-11-10 22:25:39,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-11-10 22:25:39,582 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-11-10 22:25:39,583 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 225 flow [2024-11-10 22:25:39,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-11-10 22:25:39,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:39,583 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-10 22:25:39,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:39,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:39,784 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:39,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:39,784 INFO L85 PathProgramCache]: Analyzing trace with hash -719131031, now seen corresponding path program 1 times [2024-11-10 22:25:39,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:39,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005709289] [2024-11-10 22:25:39,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:39,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:39,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:39,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005709289] [2024-11-10 22:25:39,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005709289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:39,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495926552] [2024-11-10 22:25:39,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:39,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:39,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:39,829 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) [2024-11-10 22:25:39,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:25:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:39,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 22:25:39,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:39,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:39,929 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:39,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495926552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:39,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:39,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-10 22:25:39,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880120727] [2024-11-10 22:25:39,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:39,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 22:25:39,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:39,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 22:25:39,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-10 22:25:39,931 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-10 22:25:39,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 225 flow. Second operand has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 9 states have internal predecessors, (168), 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) [2024-11-10 22:25:39,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:39,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-10 22:25:39,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:40,250 INFO L124 PetriNetUnfolderBase]: 1462/3451 cut-off events. [2024-11-10 22:25:40,251 INFO L125 PetriNetUnfolderBase]: For 5957/6117 co-relation queries the response was YES. [2024-11-10 22:25:40,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9510 conditions, 3451 events. 1462/3451 cut-off events. For 5957/6117 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 23554 event pairs, 85 based on Foata normal form. 208/3489 useless extension candidates. Maximal degree in co-relation 9490. Up to 461 conditions per place. [2024-11-10 22:25:40,268 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 148 selfloop transitions, 14 changer transitions 2/174 dead transitions. [2024-11-10 22:25:40,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 174 transitions, 1168 flow [2024-11-10 22:25:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 22:25:40,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 22:25:40,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 254 transitions. [2024-11-10 22:25:40,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6883468834688347 [2024-11-10 22:25:40,270 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 225 flow. Second operand 9 states and 254 transitions. [2024-11-10 22:25:40,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 174 transitions, 1168 flow [2024-11-10 22:25:40,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 174 transitions, 1167 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:40,277 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 363 flow [2024-11-10 22:25:40,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=363, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2024-11-10 22:25:40,278 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-11-10 22:25:40,278 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 363 flow [2024-11-10 22:25:40,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 9 states have internal predecessors, (168), 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) [2024-11-10 22:25:40,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:40,278 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:40,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:25:40,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-10 22:25:40,483 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:40,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:40,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1340510289, now seen corresponding path program 1 times [2024-11-10 22:25:40,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:40,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174998883] [2024-11-10 22:25:40,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:40,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:40,537 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:40,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:40,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174998883] [2024-11-10 22:25:40,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174998883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:40,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460723073] [2024-11-10 22:25:40,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:40,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:40,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:40,542 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) [2024-11-10 22:25:40,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:25:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:40,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:25:40,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:40,621 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:40,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460723073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:40,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:40,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:25:40,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958357562] [2024-11-10 22:25:40,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:40,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:25:40,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:40,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:25:40,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:25:40,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-10 22:25:40,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 363 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2024-11-10 22:25:40,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:40,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-10 22:25:40,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:41,061 INFO L124 PetriNetUnfolderBase]: 1600/3610 cut-off events. [2024-11-10 22:25:41,061 INFO L125 PetriNetUnfolderBase]: For 7991/8033 co-relation queries the response was YES. [2024-11-10 22:25:41,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10923 conditions, 3610 events. 1600/3610 cut-off events. For 7991/8033 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 23991 event pairs, 251 based on Foata normal form. 111/3514 useless extension candidates. Maximal degree in co-relation 10896. Up to 897 conditions per place. [2024-11-10 22:25:41,080 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 144 selfloop transitions, 7 changer transitions 0/159 dead transitions. [2024-11-10 22:25:41,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 159 transitions, 1455 flow [2024-11-10 22:25:41,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:25:41,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:25:41,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-11-10 22:25:41,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2024-11-10 22:25:41,081 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 363 flow. Second operand 6 states and 138 transitions. [2024-11-10 22:25:41,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 159 transitions, 1455 flow [2024-11-10 22:25:41,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 159 transitions, 1398 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:41,090 INFO L231 Difference]: Finished difference. Result has 75 places, 56 transitions, 359 flow [2024-11-10 22:25:41,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=359, PETRI_PLACES=75, PETRI_TRANSITIONS=56} [2024-11-10 22:25:41,091 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-11-10 22:25:41,091 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 56 transitions, 359 flow [2024-11-10 22:25:41,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2024-11-10 22:25:41,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:41,092 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:41,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 22:25:41,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:41,293 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:41,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:41,293 INFO L85 PathProgramCache]: Analyzing trace with hash 117943749, now seen corresponding path program 1 times [2024-11-10 22:25:41,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:41,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897766337] [2024-11-10 22:25:41,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:41,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:41,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:41,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897766337] [2024-11-10 22:25:41,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897766337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:41,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391265516] [2024-11-10 22:25:41,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:41,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:41,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:41,340 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:41,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:25:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:41,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:25:41,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:41,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:41,440 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:41,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391265516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:41,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:41,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:25:41,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971259598] [2024-11-10 22:25:41,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:41,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:25:41,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:41,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:25:41,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:25:41,457 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-10 22:25:41,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 56 transitions, 359 flow. Second operand has 12 states, 12 states have (on average 16.833333333333332) internal successors, (202), 12 states have internal predecessors, (202), 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) [2024-11-10 22:25:41,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:41,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-10 22:25:41,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:42,184 INFO L124 PetriNetUnfolderBase]: 2870/6301 cut-off events. [2024-11-10 22:25:42,185 INFO L125 PetriNetUnfolderBase]: For 15752/15868 co-relation queries the response was YES. [2024-11-10 22:25:42,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20067 conditions, 6301 events. 2870/6301 cut-off events. For 15752/15868 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 44703 event pairs, 629 based on Foata normal form. 243/6386 useless extension candidates. Maximal degree in co-relation 20040. Up to 1842 conditions per place. [2024-11-10 22:25:42,213 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 243 selfloop transitions, 13 changer transitions 6/270 dead transitions. [2024-11-10 22:25:42,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 270 transitions, 2471 flow [2024-11-10 22:25:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:25:42,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:25:42,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-11-10 22:25:42,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5829268292682926 [2024-11-10 22:25:42,218 INFO L175 Difference]: Start difference. First operand has 75 places, 56 transitions, 359 flow. Second operand 10 states and 239 transitions. [2024-11-10 22:25:42,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 270 transitions, 2471 flow [2024-11-10 22:25:42,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 270 transitions, 2441 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-10 22:25:42,234 INFO L231 Difference]: Finished difference. Result has 83 places, 64 transitions, 422 flow [2024-11-10 22:25:42,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=422, PETRI_PLACES=83, PETRI_TRANSITIONS=64} [2024-11-10 22:25:42,234 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2024-11-10 22:25:42,234 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 64 transitions, 422 flow [2024-11-10 22:25:42,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.833333333333332) internal successors, (202), 12 states have internal predecessors, (202), 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) [2024-11-10 22:25:42,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:42,235 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-10 22:25:42,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:42,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:42,436 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:42,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:42,437 INFO L85 PathProgramCache]: Analyzing trace with hash -402163262, now seen corresponding path program 2 times [2024-11-10 22:25:42,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:42,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567723554] [2024-11-10 22:25:42,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:42,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:42,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:42,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567723554] [2024-11-10 22:25:42,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567723554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:42,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414839923] [2024-11-10 22:25:42,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:25:42,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:42,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:42,531 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:42,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:25:42,564 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:25:42,564 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:42,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:25:42,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:42,616 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-10 22:25:42,616 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:42,660 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-10 22:25:42,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414839923] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:42,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:42,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-10 22:25:42,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529320590] [2024-11-10 22:25:42,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:42,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 22:25:42,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:42,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 22:25:42,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-10 22:25:42,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-11-10 22:25:42,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 64 transitions, 422 flow. Second operand has 15 states, 15 states have (on average 14.266666666666667) internal successors, (214), 15 states have internal predecessors, (214), 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) [2024-11-10 22:25:42,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:42,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-11-10 22:25:42,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:43,996 INFO L124 PetriNetUnfolderBase]: 5060/9429 cut-off events. [2024-11-10 22:25:43,997 INFO L125 PetriNetUnfolderBase]: For 26013/26111 co-relation queries the response was YES. [2024-11-10 22:25:44,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30913 conditions, 9429 events. 5060/9429 cut-off events. For 26013/26111 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 63863 event pairs, 401 based on Foata normal form. 310/9171 useless extension candidates. Maximal degree in co-relation 30884. Up to 2104 conditions per place. [2024-11-10 22:25:44,038 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 308 selfloop transitions, 18 changer transitions 3/335 dead transitions. [2024-11-10 22:25:44,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 335 transitions, 2722 flow [2024-11-10 22:25:44,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 22:25:44,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 22:25:44,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 340 transitions. [2024-11-10 22:25:44,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5528455284552846 [2024-11-10 22:25:44,040 INFO L175 Difference]: Start difference. First operand has 83 places, 64 transitions, 422 flow. Second operand 15 states and 340 transitions. [2024-11-10 22:25:44,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 335 transitions, 2722 flow [2024-11-10 22:25:44,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 335 transitions, 2587 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-11-10 22:25:44,064 INFO L231 Difference]: Finished difference. Result has 91 places, 68 transitions, 462 flow [2024-11-10 22:25:44,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=462, PETRI_PLACES=91, PETRI_TRANSITIONS=68} [2024-11-10 22:25:44,065 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-11-10 22:25:44,065 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 68 transitions, 462 flow [2024-11-10 22:25:44,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.266666666666667) internal successors, (214), 15 states have internal predecessors, (214), 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) [2024-11-10 22:25:44,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:44,065 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1] [2024-11-10 22:25:44,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 22:25:44,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 22:25:44,266 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:44,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:44,267 INFO L85 PathProgramCache]: Analyzing trace with hash 535071565, now seen corresponding path program 2 times [2024-11-10 22:25:44,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:44,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960511414] [2024-11-10 22:25:44,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:44,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:44,416 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:44,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:44,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960511414] [2024-11-10 22:25:44,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960511414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:44,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025076546] [2024-11-10 22:25:44,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:25:44,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:44,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:44,419 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:44,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:25:44,459 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:25:44,459 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:44,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-10 22:25:44,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:44,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:44,653 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:44,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025076546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:44,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:44,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-10 22:25:44,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482387933] [2024-11-10 22:25:44,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:44,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 22:25:44,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:44,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 22:25:44,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-10 22:25:44,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-10 22:25:44,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 68 transitions, 462 flow. Second operand has 17 states, 17 states have (on average 18.823529411764707) internal successors, (320), 17 states have internal predecessors, (320), 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) [2024-11-10 22:25:44,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:44,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-10 22:25:44,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:46,518 INFO L124 PetriNetUnfolderBase]: 7900/17483 cut-off events. [2024-11-10 22:25:46,518 INFO L125 PetriNetUnfolderBase]: For 73987/74531 co-relation queries the response was YES. [2024-11-10 22:25:46,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57699 conditions, 17483 events. 7900/17483 cut-off events. For 73987/74531 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 142832 event pairs, 202 based on Foata normal form. 731/18205 useless extension candidates. Maximal degree in co-relation 57671. Up to 3123 conditions per place. [2024-11-10 22:25:46,625 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 414 selfloop transitions, 58 changer transitions 9/490 dead transitions. [2024-11-10 22:25:46,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 490 transitions, 3988 flow [2024-11-10 22:25:46,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 22:25:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 22:25:46,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 502 transitions. [2024-11-10 22:25:46,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7202295552367288 [2024-11-10 22:25:46,631 INFO L175 Difference]: Start difference. First operand has 91 places, 68 transitions, 462 flow. Second operand 17 states and 502 transitions. [2024-11-10 22:25:46,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 490 transitions, 3988 flow [2024-11-10 22:25:46,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 490 transitions, 3719 flow, removed 68 selfloop flow, removed 11 redundant places. [2024-11-10 22:25:46,770 INFO L231 Difference]: Finished difference. Result has 110 places, 110 transitions, 1014 flow [2024-11-10 22:25:46,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1014, PETRI_PLACES=110, PETRI_TRANSITIONS=110} [2024-11-10 22:25:46,771 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2024-11-10 22:25:46,771 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 110 transitions, 1014 flow [2024-11-10 22:25:46,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.823529411764707) internal successors, (320), 17 states have internal predecessors, (320), 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) [2024-11-10 22:25:46,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:46,771 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:46,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 22:25:46,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-10 22:25:46,973 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:46,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:46,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1407694897, now seen corresponding path program 2 times [2024-11-10 22:25:46,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:46,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203990765] [2024-11-10 22:25:46,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:46,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:47,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:47,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203990765] [2024-11-10 22:25:47,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203990765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:47,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348815628] [2024-11-10 22:25:47,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:25:47,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:47,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:47,366 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:47,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 22:25:47,409 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:25:47,409 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:47,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:25:47,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-10 22:25:47,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-10 22:25:47,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348815628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:47,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:47,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-10 22:25:47,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718975294] [2024-11-10 22:25:47,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:47,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 22:25:47,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:47,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 22:25:47,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-10 22:25:47,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-11-10 22:25:47,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 110 transitions, 1014 flow. Second operand has 15 states, 15 states have (on average 16.733333333333334) internal successors, (251), 15 states have internal predecessors, (251), 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) [2024-11-10 22:25:47,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:47,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-11-10 22:25:47,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:50,568 INFO L124 PetriNetUnfolderBase]: 11878/23992 cut-off events. [2024-11-10 22:25:50,568 INFO L125 PetriNetUnfolderBase]: For 91379/92281 co-relation queries the response was YES. [2024-11-10 22:25:50,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80270 conditions, 23992 events. 11878/23992 cut-off events. For 91379/92281 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 194194 event pairs, 1058 based on Foata normal form. 1333/25311 useless extension candidates. Maximal degree in co-relation 80228. Up to 3970 conditions per place. [2024-11-10 22:25:50,716 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 643 selfloop transitions, 22 changer transitions 38/710 dead transitions. [2024-11-10 22:25:50,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 710 transitions, 8841 flow [2024-11-10 22:25:50,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 22:25:50,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 22:25:50,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 334 transitions. [2024-11-10 22:25:50,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5430894308943089 [2024-11-10 22:25:50,719 INFO L175 Difference]: Start difference. First operand has 110 places, 110 transitions, 1014 flow. Second operand 15 states and 334 transitions. [2024-11-10 22:25:50,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 710 transitions, 8841 flow [2024-11-10 22:25:50,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 710 transitions, 7957 flow, removed 387 selfloop flow, removed 8 redundant places. [2024-11-10 22:25:50,826 INFO L231 Difference]: Finished difference. Result has 116 places, 112 transitions, 985 flow [2024-11-10 22:25:50,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=985, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2024-11-10 22:25:50,826 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2024-11-10 22:25:50,828 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 985 flow [2024-11-10 22:25:50,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 16.733333333333334) internal successors, (251), 15 states have internal predecessors, (251), 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) [2024-11-10 22:25:50,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:50,828 INFO L204 CegarLoopForPetriNet]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1] [2024-11-10 22:25:50,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 22:25:51,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-10 22:25:51,030 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:51,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:51,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1992130837, now seen corresponding path program 3 times [2024-11-10 22:25:51,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:51,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990538975] [2024-11-10 22:25:51,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:51,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:51,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:51,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990538975] [2024-11-10 22:25:51,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990538975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:51,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063479278] [2024-11-10 22:25:51,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 22:25:51,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:51,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:51,440 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:25:51,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 22:25:51,513 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-10 22:25:51,513 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:51,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-10 22:25:51,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:51,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:52,033 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:52,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063479278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:52,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:52,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2024-11-10 22:25:52,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799615033] [2024-11-10 22:25:52,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:52,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-10 22:25:52,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:52,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-10 22:25:52,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-10 22:25:52,037 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-10 22:25:52,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 985 flow. Second operand has 33 states, 33 states have (on average 18.90909090909091) internal successors, (624), 33 states have internal predecessors, (624), 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) [2024-11-10 22:25:52,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:52,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-10 22:25:52,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:58,492 INFO L124 PetriNetUnfolderBase]: 19082/44953 cut-off events. [2024-11-10 22:25:58,492 INFO L125 PetriNetUnfolderBase]: For 380491/380813 co-relation queries the response was YES. [2024-11-10 22:25:58,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147249 conditions, 44953 events. 19082/44953 cut-off events. For 380491/380813 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 403923 event pairs, 263 based on Foata normal form. 1378/46308 useless extension candidates. Maximal degree in co-relation 147212. Up to 6515 conditions per place. [2024-11-10 22:25:58,888 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 885 selfloop transitions, 214 changer transitions 0/1107 dead transitions. [2024-11-10 22:25:58,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 1107 transitions, 10304 flow [2024-11-10 22:25:58,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-10 22:25:58,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-10 22:25:58,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 936 transitions. [2024-11-10 22:25:58,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6917960088691796 [2024-11-10 22:25:58,891 INFO L175 Difference]: Start difference. First operand has 116 places, 112 transitions, 985 flow. Second operand 33 states and 936 transitions. [2024-11-10 22:25:58,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 1107 transitions, 10304 flow [2024-11-10 22:25:59,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 1107 transitions, 8653 flow, removed 217 selfloop flow, removed 12 redundant places. [2024-11-10 22:25:59,071 INFO L231 Difference]: Finished difference. Result has 164 places, 268 transitions, 3072 flow [2024-11-10 22:25:59,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3072, PETRI_PLACES=164, PETRI_TRANSITIONS=268} [2024-11-10 22:25:59,072 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2024-11-10 22:25:59,072 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 268 transitions, 3072 flow [2024-11-10 22:25:59,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 18.90909090909091) internal successors, (624), 33 states have internal predecessors, (624), 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) [2024-11-10 22:25:59,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:59,073 INFO L204 CegarLoopForPetriNet]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1, 1, 1] [2024-11-10 22:25:59,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:59,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-10 22:25:59,274 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:25:59,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:59,275 INFO L85 PathProgramCache]: Analyzing trace with hash -466199387, now seen corresponding path program 4 times [2024-11-10 22:25:59,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:59,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235735411] [2024-11-10 22:25:59,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:59,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:00,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:00,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:00,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235735411] [2024-11-10 22:26:00,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235735411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:26:00,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360951227] [2024-11-10 22:26:00,638 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 22:26:00,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:00,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:26:00,640 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:26:00,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 22:26:00,714 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 22:26:00,715 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:26:00,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-10 22:26:00,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:26:00,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:00,934 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:26:02,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:02,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360951227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:26:02,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:26:02,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 63 [2024-11-10 22:26:02,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007082343] [2024-11-10 22:26:02,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:26:02,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-10 22:26:02,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:02,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-10 22:26:02,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-11-10 22:26:02,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-10 22:26:02,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 268 transitions, 3072 flow. Second operand has 65 states, 65 states have (on average 18.953846153846154) internal successors, (1232), 65 states have internal predecessors, (1232), 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) [2024-11-10 22:26:02,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:02,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-10 22:26:02,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:31,432 INFO L124 PetriNetUnfolderBase]: 49007/117006 cut-off events. [2024-11-10 22:26:31,433 INFO L125 PetriNetUnfolderBase]: For 3181109/3181421 co-relation queries the response was YES. [2024-11-10 22:26:32,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370073 conditions, 117006 events. 49007/117006 cut-off events. For 3181109/3181421 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 1124378 event pairs, 715 based on Foata normal form. 2422/119339 useless extension candidates. Maximal degree in co-relation 370006. Up to 16915 conditions per place. [2024-11-10 22:26:33,288 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 1749 selfloop transitions, 786 changer transitions 0/2543 dead transitions. [2024-11-10 22:26:33,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 2543 transitions, 23174 flow [2024-11-10 22:26:33,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-10 22:26:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2024-11-10 22:26:33,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 1864 transitions. [2024-11-10 22:26:33,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.699437148217636 [2024-11-10 22:26:33,292 INFO L175 Difference]: Start difference. First operand has 164 places, 268 transitions, 3072 flow. Second operand 65 states and 1864 transitions. [2024-11-10 22:26:33,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 2543 transitions, 23174 flow [2024-11-10 22:26:34,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 2543 transitions, 21348 flow, removed 873 selfloop flow, removed 7 redundant places. [2024-11-10 22:26:34,261 INFO L231 Difference]: Finished difference. Result has 283 places, 840 transitions, 10645 flow [2024-11-10 22:26:34,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2840, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=10645, PETRI_PLACES=283, PETRI_TRANSITIONS=840} [2024-11-10 22:26:34,261 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 242 predicate places. [2024-11-10 22:26:34,262 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 840 transitions, 10645 flow [2024-11-10 22:26:34,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 18.953846153846154) internal successors, (1232), 65 states have internal predecessors, (1232), 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) [2024-11-10 22:26:34,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:34,263 INFO L204 CegarLoopForPetriNet]: trace histogram [63, 63, 62, 62, 62, 62, 1, 1, 1, 1] [2024-11-10 22:26:34,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 22:26:34,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:34,464 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-10 22:26:34,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:34,464 INFO L85 PathProgramCache]: Analyzing trace with hash 834917317, now seen corresponding path program 5 times [2024-11-10 22:26:34,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:34,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765835680] [2024-11-10 22:26:34,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:34,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:38,221 INFO L134 CoverageAnalysis]: Checked inductivity of 11532 backedges. 0 proven. 11532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:38,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:38,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765835680] [2024-11-10 22:26:38,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765835680] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:26:38,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357663837] [2024-11-10 22:26:38,222 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 22:26:38,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:38,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:26:38,224 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:26:38,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 22:26:38,439 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2024-11-10 22:26:38,439 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:26:38,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-10 22:26:38,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:26:38,830 INFO L134 CoverageAnalysis]: Checked inductivity of 11532 backedges. 0 proven. 11532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:38,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:26:42,959 INFO L134 CoverageAnalysis]: Checked inductivity of 11532 backedges. 0 proven. 11532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:42,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357663837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:26:42,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:26:42,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 127 [2024-11-10 22:26:42,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272099050] [2024-11-10 22:26:42,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:26:42,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2024-11-10 22:26:42,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:42,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2024-11-10 22:26:42,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2024-11-10 22:26:42,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-11-10 22:26:42,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 840 transitions, 10645 flow. Second operand has 129 states, 129 states have (on average 18.976744186046513) internal successors, (2448), 129 states have internal predecessors, (2448), 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) [2024-11-10 22:26:42,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:42,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-11-10 22:26:42,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand