./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/heavy-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/heavy-1.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 544ff1a31d34f1c818140bb31fb5c7091aef904c3b9f7e17a0cc8560e99eb61a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 01:46:35,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 01:46:35,822 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 01:46:35,825 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 01:46:35,825 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 01:46:35,850 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 01:46:35,851 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 01:46:35,852 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 01:46:35,852 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 01:46:35,853 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 01:46:35,854 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 01:46:35,854 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 01:46:35,854 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 01:46:35,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 01:46:35,856 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 01:46:35,856 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 01:46:35,856 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 01:46:35,857 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 01:46:35,857 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 01:46:35,857 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 01:46:35,861 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 01:46:35,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 01:46:35,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 01:46:35,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 01:46:35,862 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 01:46:35,862 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 01:46:35,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 01:46:35,862 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 01:46:35,862 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 01:46:35,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 01:46:35,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 01:46:35,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 01:46:35,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 01:46:35,863 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 01:46:35,863 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 01:46:35,863 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 01:46:35,864 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 01:46:35,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 01:46:35,864 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 01:46:35,864 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 01:46:35,864 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 01:46:35,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 01:46:35,865 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 544ff1a31d34f1c818140bb31fb5c7091aef904c3b9f7e17a0cc8560e99eb61a [2024-10-11 01:46:36,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 01:46:36,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 01:46:36,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 01:46:36,103 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 01:46:36,103 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 01:46:36,104 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/heavy-1.c [2024-10-11 01:46:37,508 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 01:46:37,680 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 01:46:37,681 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/heavy-1.c [2024-10-11 01:46:37,689 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/13794461c/ab277f4caff945fb8dd74657069d1f4c/FLAG0b5776409 [2024-10-11 01:46:38,067 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/13794461c/ab277f4caff945fb8dd74657069d1f4c [2024-10-11 01:46:38,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 01:46:38,070 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 01:46:38,075 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 01:46:38,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 01:46:38,086 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 01:46:38,087 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:46:38" (1/1) ... [2024-10-11 01:46:38,088 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ce39cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:46:38, skipping insertion in model container [2024-10-11 01:46:38,088 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:46:38" (1/1) ... [2024-10-11 01:46:38,116 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 01:46:38,348 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/heavy-1.c[600,613] [2024-10-11 01:46:38,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 01:46:38,378 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 01:46:38,388 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/heavy-1.c[600,613] [2024-10-11 01:46:38,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 01:46:38,433 INFO L204 MainTranslator]: Completed translation [2024-10-11 01:46:38,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:46:38 WrapperNode [2024-10-11 01:46:38,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 01:46:38,438 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 01:46:38,438 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 01:46:38,438 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 01:46:38,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:46:38" (1/1) ... [2024-10-11 01:46:38,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:46:38" (1/1) ... [2024-10-11 01:46:38,462 INFO L138 Inliner]: procedures = 12, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2024-10-11 01:46:38,462 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 01:46:38,463 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 01:46:38,463 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 01:46:38,463 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 01:46:38,471 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:46:38" (1/1) ... [2024-10-11 01:46:38,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:46:38" (1/1) ... [2024-10-11 01:46:38,472 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:46:38" (1/1) ... [2024-10-11 01:46:38,481 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-11 01:46:38,481 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:46:38" (1/1) ... [2024-10-11 01:46:38,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:46:38" (1/1) ... [2024-10-11 01:46:38,484 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:46:38" (1/1) ... [2024-10-11 01:46:38,486 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:46:38" (1/1) ... [2024-10-11 01:46:38,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:46:38" (1/1) ... [2024-10-11 01:46:38,487 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:46:38" (1/1) ... [2024-10-11 01:46:38,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 01:46:38,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 01:46:38,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 01:46:38,490 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 01:46:38,490 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:46:38" (1/1) ... [2024-10-11 01:46:38,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 01:46:38,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:46:38,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 01:46:38,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 01:46:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 01:46:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 01:46:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 01:46:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 01:46:38,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 01:46:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 01:46:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 01:46:38,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 01:46:38,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 01:46:38,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-10-11 01:46:38,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-10-11 01:46:38,632 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 01:46:38,633 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 01:46:38,760 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-10-11 01:46:38,760 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 01:46:38,795 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 01:46:38,796 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 01:46:38,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:46:38 BoogieIcfgContainer [2024-10-11 01:46:38,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 01:46:38,799 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 01:46:38,799 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 01:46:38,802 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 01:46:38,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 01:46:38" (1/3) ... [2024-10-11 01:46:38,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f67795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:46:38, skipping insertion in model container [2024-10-11 01:46:38,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:46:38" (2/3) ... [2024-10-11 01:46:38,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f67795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:46:38, skipping insertion in model container [2024-10-11 01:46:38,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:46:38" (3/3) ... [2024-10-11 01:46:38,804 INFO L112 eAbstractionObserver]: Analyzing ICFG heavy-1.c [2024-10-11 01:46:38,817 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 01:46:38,818 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 01:46:38,868 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 01:46:38,876 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;@4939e9a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 01:46:38,878 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 01:46:38,883 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:38,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-11 01:46:38,888 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:46:38,888 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-11 01:46:38,889 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:46:38,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:46:38,894 INFO L85 PathProgramCache]: Analyzing trace with hash 2480728, now seen corresponding path program 1 times [2024-10-11 01:46:38,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:46:38,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971998564] [2024-10-11 01:46:38,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:46:38,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:46:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:46:39,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:46:39,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:46:39,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971998564] [2024-10-11 01:46:39,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971998564] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:46:39,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:46:39,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 01:46:39,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344268705] [2024-10-11 01:46:39,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:46:39,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 01:46:39,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:46:39,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 01:46:39,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 01:46:39,061 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 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) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:39,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:46:39,082 INFO L93 Difference]: Finished difference Result 21 states and 33 transitions. [2024-10-11 01:46:39,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 01:46:39,084 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2024-10-11 01:46:39,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:46:39,089 INFO L225 Difference]: With dead ends: 21 [2024-10-11 01:46:39,089 INFO L226 Difference]: Without dead ends: 9 [2024-10-11 01:46:39,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 01:46:39,094 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:46:39,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:46:39,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-10-11 01:46:39,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-10-11 01:46:39,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:39,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2024-10-11 01:46:39,116 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 4 [2024-10-11 01:46:39,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:46:39,117 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2024-10-11 01:46:39,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:39,118 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2024-10-11 01:46:39,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-11 01:46:39,118 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:46:39,119 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-11 01:46:39,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 01:46:39,119 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:46:39,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:46:39,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2451898, now seen corresponding path program 1 times [2024-10-11 01:46:39,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:46:39,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383475666] [2024-10-11 01:46:39,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:46:39,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:46:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:46:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:46:39,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:46:39,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383475666] [2024-10-11 01:46:39,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383475666] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:46:39,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:46:39,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 01:46:39,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260481281] [2024-10-11 01:46:39,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:46:39,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:46:39,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:46:39,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:46:39,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:46:39,188 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:39,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:46:39,217 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2024-10-11 01:46:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:46:39,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2024-10-11 01:46:39,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:46:39,220 INFO L225 Difference]: With dead ends: 17 [2024-10-11 01:46:39,220 INFO L226 Difference]: Without dead ends: 14 [2024-10-11 01:46:39,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:46:39,222 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:46:39,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:46:39,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-10-11 01:46:39,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10. [2024-10-11 01:46:39,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:39,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2024-10-11 01:46:39,226 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 4 [2024-10-11 01:46:39,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:46:39,226 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-10-11 01:46:39,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:39,227 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2024-10-11 01:46:39,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-11 01:46:39,227 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:46:39,227 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:46:39,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 01:46:39,227 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:46:39,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:46:39,228 INFO L85 PathProgramCache]: Analyzing trace with hash 63007168, now seen corresponding path program 1 times [2024-10-11 01:46:39,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:46:39,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190832557] [2024-10-11 01:46:39,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:46:39,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:46:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:46:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:46:39,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:46:39,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190832557] [2024-10-11 01:46:39,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190832557] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:46:39,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:46:39,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 01:46:39,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838131978] [2024-10-11 01:46:39,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:46:39,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:46:39,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:46:39,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:46:39,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:46:39,302 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:46:39,325 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2024-10-11 01:46:39,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:46:39,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) Word has length 7 [2024-10-11 01:46:39,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:46:39,330 INFO L225 Difference]: With dead ends: 21 [2024-10-11 01:46:39,330 INFO L226 Difference]: Without dead ends: 13 [2024-10-11 01:46:39,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:46:39,331 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:46:39,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:46:39,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-11 01:46:39,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2024-10-11 01:46:39,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:39,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2024-10-11 01:46:39,338 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2024-10-11 01:46:39,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:46:39,338 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2024-10-11 01:46:39,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:39,338 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2024-10-11 01:46:39,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-11 01:46:39,338 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:46:39,338 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:46:39,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 01:46:39,339 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:46:39,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:46:39,339 INFO L85 PathProgramCache]: Analyzing trace with hash -2060823466, now seen corresponding path program 1 times [2024-10-11 01:46:39,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:46:39,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289553128] [2024-10-11 01:46:39,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:46:39,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:46:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:46:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:46:39,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:46:39,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289553128] [2024-10-11 01:46:39,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289553128] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:46:39,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:46:39,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 01:46:39,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654581124] [2024-10-11 01:46:39,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:46:39,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:46:39,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:46:39,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:46:39,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:46:39,403 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:39,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:46:39,412 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2024-10-11 01:46:39,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:46:39,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) Word has length 10 [2024-10-11 01:46:39,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:46:39,413 INFO L225 Difference]: With dead ends: 21 [2024-10-11 01:46:39,413 INFO L226 Difference]: Without dead ends: 12 [2024-10-11 01:46:39,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:46:39,414 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:46:39,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:46:39,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-10-11 01:46:39,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-10-11 01:46:39,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:39,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-10-11 01:46:39,418 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 10 [2024-10-11 01:46:39,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:46:39,418 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-10-11 01:46:39,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:39,418 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2024-10-11 01:46:39,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-11 01:46:39,419 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:46:39,419 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:46:39,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 01:46:39,419 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:46:39,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:46:39,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1471176693, now seen corresponding path program 1 times [2024-10-11 01:46:39,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:46:39,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405512985] [2024-10-11 01:46:39,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:46:39,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:46:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:46:39,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:46:39,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:46:39,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405512985] [2024-10-11 01:46:39,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405512985] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:46:39,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957644660] [2024-10-11 01:46:39,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:46:39,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:46:39,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:46:39,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:46:39,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 01:46:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:46:39,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 01:46:39,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:46:39,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 01:46:39,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:46:39,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:46:39,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957644660] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:46:39,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:46:39,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2024-10-11 01:46:39,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625196682] [2024-10-11 01:46:39,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:46:39,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 01:46:39,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:46:39,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 01:46:39,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-11 01:46:39,799 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:39,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:46:39,968 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2024-10-11 01:46:39,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 01:46:39,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) Word has length 11 [2024-10-11 01:46:39,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:46:39,970 INFO L225 Difference]: With dead ends: 47 [2024-10-11 01:46:39,972 INFO L226 Difference]: Without dead ends: 37 [2024-10-11 01:46:39,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2024-10-11 01:46:39,973 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:46:39,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 34 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:46:39,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-10-11 01:46:39,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-10-11 01:46:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2024-10-11 01:46:39,985 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 11 [2024-10-11 01:46:39,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:46:39,986 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2024-10-11 01:46:39,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:39,986 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2024-10-11 01:46:39,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-11 01:46:39,988 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:46:39,988 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-10-11 01:46:40,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 01:46:40,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:46:40,189 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:46:40,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:46:40,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1700955222, now seen corresponding path program 2 times [2024-10-11 01:46:40,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:46:40,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327577763] [2024-10-11 01:46:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:46:40,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:46:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:46:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-11 01:46:40,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:46:40,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327577763] [2024-10-11 01:46:40,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327577763] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:46:40,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679842741] [2024-10-11 01:46:40,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:46:40,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:46:40,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:46:40,418 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:46:40,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 01:46:40,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:46:40,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:46:40,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 01:46:40,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:46:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-11 01:46:40,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:46:40,784 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 71 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-11 01:46:40,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679842741] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:46:40,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:46:40,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 8] total 15 [2024-10-11 01:46:40,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503366632] [2024-10-11 01:46:40,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:46:40,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 01:46:40,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:46:40,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 01:46:40,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-10-11 01:46:40,786 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:41,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:46:41,208 INFO L93 Difference]: Finished difference Result 129 states and 178 transitions. [2024-10-11 01:46:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 01:46:41,212 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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) Word has length 36 [2024-10-11 01:46:41,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:46:41,214 INFO L225 Difference]: With dead ends: 129 [2024-10-11 01:46:41,214 INFO L226 Difference]: Without dead ends: 78 [2024-10-11 01:46:41,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2024-10-11 01:46:41,215 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:46:41,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 95 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:46:41,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-11 01:46:41,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-10-11 01:46:41,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 77 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:41,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2024-10-11 01:46:41,255 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 36 [2024-10-11 01:46:41,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:46:41,256 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2024-10-11 01:46:41,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:41,256 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2024-10-11 01:46:41,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-11 01:46:41,257 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:46:41,257 INFO L215 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-10-11 01:46:41,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 01:46:41,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:46:41,458 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:46:41,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:46:41,458 INFO L85 PathProgramCache]: Analyzing trace with hash 159773842, now seen corresponding path program 3 times [2024-10-11 01:46:41,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:46:41,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270968714] [2024-10-11 01:46:41,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:46:41,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:46:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:46:41,868 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 116 proven. 21 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-11 01:46:41,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:46:41,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270968714] [2024-10-11 01:46:41,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270968714] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:46:41,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518228022] [2024-10-11 01:46:41,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:46:41,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:46:41,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:46:41,873 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:46:41,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 01:46:41,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-10-11 01:46:41,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:46:41,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 01:46:41,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:46:41,994 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 73 proven. 80 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-10-11 01:46:41,994 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:46:42,050 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 89 proven. 6 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-10-11 01:46:42,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518228022] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:46:42,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:46:42,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 13 [2024-10-11 01:46:42,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544829190] [2024-10-11 01:46:42,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:46:42,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 01:46:42,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:46:42,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 01:46:42,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2024-10-11 01:46:42,053 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:42,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:46:42,167 INFO L93 Difference]: Finished difference Result 148 states and 203 transitions. [2024-10-11 01:46:42,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 01:46:42,168 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) Word has length 46 [2024-10-11 01:46:42,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:46:42,169 INFO L225 Difference]: With dead ends: 148 [2024-10-11 01:46:42,169 INFO L226 Difference]: Without dead ends: 73 [2024-10-11 01:46:42,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2024-10-11 01:46:42,170 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:46:42,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:46:42,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-11 01:46:42,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-11 01:46:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.125) internal successors, (81), 72 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2024-10-11 01:46:42,181 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 46 [2024-10-11 01:46:42,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:46:42,181 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2024-10-11 01:46:42,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:42,181 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2024-10-11 01:46:42,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-11 01:46:42,182 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:46:42,182 INFO L215 NwaCegarLoop]: trace histogram [44, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-10-11 01:46:42,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 01:46:42,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:46:42,387 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:46:42,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:46:42,388 INFO L85 PathProgramCache]: Analyzing trace with hash 321221754, now seen corresponding path program 4 times [2024-10-11 01:46:42,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:46:42,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821467358] [2024-10-11 01:46:42,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:46:42,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:46:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:46:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1178 backedges. 443 proven. 66 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2024-10-11 01:46:43,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:46:43,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821467358] [2024-10-11 01:46:43,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821467358] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:46:43,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565762152] [2024-10-11 01:46:43,165 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:46:43,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:46:43,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:46:43,167 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:46:43,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 01:46:43,293 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:46:43,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:46:43,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 01:46:43,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:46:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1178 backedges. 0 proven. 955 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-10-11 01:46:43,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:46:43,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1178 backedges. 35 proven. 920 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-10-11 01:46:43,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565762152] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:46:43,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:46:43,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 34 [2024-10-11 01:46:43,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730842852] [2024-10-11 01:46:43,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:46:43,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 01:46:43,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:46:43,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 01:46:43,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=926, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 01:46:43,935 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:48,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:46:48,460 INFO L93 Difference]: Finished difference Result 255 states and 299 transitions. [2024-10-11 01:46:48,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2024-10-11 01:46:48,461 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 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) Word has length 72 [2024-10-11 01:46:48,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:46:48,463 INFO L225 Difference]: With dead ends: 255 [2024-10-11 01:46:48,464 INFO L226 Difference]: Without dead ends: 185 [2024-10-11 01:46:48,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8035 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2819, Invalid=20437, Unknown=0, NotChecked=0, Total=23256 [2024-10-11 01:46:48,470 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 110 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:46:48,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 299 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-11 01:46:48,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-10-11 01:46:48,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-10-11 01:46:48,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.1141304347826086) internal successors, (205), 184 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:48,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 205 transitions. [2024-10-11 01:46:48,497 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 205 transitions. Word has length 72 [2024-10-11 01:46:48,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:46:48,498 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 205 transitions. [2024-10-11 01:46:48,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:46:48,498 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 205 transitions. [2024-10-11 01:46:48,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-11 01:46:48,504 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:46:48,504 INFO L215 NwaCegarLoop]: trace histogram [120, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1] [2024-10-11 01:46:48,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 01:46:48,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 01:46:48,705 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:46:48,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:46:48,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1193780910, now seen corresponding path program 5 times [2024-10-11 01:46:48,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:46:48,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867625125] [2024-10-11 01:46:48,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:46:48,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:46:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:46:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8720 backedges. 1550 proven. 78 refuted. 0 times theorem prover too weak. 7092 trivial. 0 not checked. [2024-10-11 01:46:50,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:46:50,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867625125] [2024-10-11 01:46:50,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867625125] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:46:50,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121829956] [2024-10-11 01:46:50,550 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:46:50,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:46:50,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:46:50,553 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:46:50,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 01:47:07,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-10-11 01:47:07,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:47:07,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-11 01:47:07,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:47:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8720 backedges. 4018 proven. 78 refuted. 0 times theorem prover too weak. 4624 trivial. 0 not checked. [2024-10-11 01:47:07,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:47:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8720 backedges. 4018 proven. 78 refuted. 0 times theorem prover too weak. 4624 trivial. 0 not checked. [2024-10-11 01:47:07,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121829956] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:47:07,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:47:07,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-10-11 01:47:07,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603364245] [2024-10-11 01:47:07,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:47:07,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-11 01:47:07,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:47:07,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-11 01:47:07,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2024-10-11 01:47:07,946 INFO L87 Difference]: Start difference. First operand 185 states and 205 transitions. Second operand has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 29 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:47:12,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:47:12,798 INFO L93 Difference]: Finished difference Result 507 states and 687 transitions. [2024-10-11 01:47:12,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 01:47:12,801 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 29 states have internal predecessors, (48), 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) Word has length 184 [2024-10-11 01:47:12,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:47:12,803 INFO L225 Difference]: With dead ends: 507 [2024-10-11 01:47:12,803 INFO L226 Difference]: Without dead ends: 325 [2024-10-11 01:47:12,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=598, Invalid=1042, Unknown=0, NotChecked=0, Total=1640 [2024-10-11 01:47:12,806 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:47:12,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:47:12,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-10-11 01:47:12,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2024-10-11 01:47:12,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.0648148148148149) internal successors, (345), 324 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:47:12,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 345 transitions. [2024-10-11 01:47:12,848 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 345 transitions. Word has length 184 [2024-10-11 01:47:12,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:47:12,849 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 345 transitions. [2024-10-11 01:47:12,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 29 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:47:12,849 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 345 transitions. [2024-10-11 01:47:12,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-10-11 01:47:12,853 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:47:12,853 INFO L215 NwaCegarLoop]: trace histogram [260, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1] [2024-10-11 01:47:12,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 01:47:13,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:47:13,058 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:47:13,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:47:13,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1050829934, now seen corresponding path program 6 times [2024-10-11 01:47:13,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:47:13,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502975825] [2024-10-11 01:47:13,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:47:13,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:47:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:47:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 36650 backedges. 6590 proven. 351 refuted. 0 times theorem prover too weak. 29709 trivial. 0 not checked. [2024-10-11 01:47:18,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:47:18,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502975825] [2024-10-11 01:47:18,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502975825] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:47:18,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380851832] [2024-10-11 01:47:18,978 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:47:18,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:47:18,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:47:18,981 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:47:18,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process