/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy FOX -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-17387ad-m [2024-11-06 14:32:36,619 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 14:32:36,690 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-06 14:32:36,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 14:32:36,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 14:32:36,718 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 14:32:36,718 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 14:32:36,719 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 14:32:36,719 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 14:32:36,719 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 14:32:36,720 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 14:32:36,720 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 14:32:36,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 14:32:36,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 14:32:36,721 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 14:32:36,721 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 14:32:36,722 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 14:32:36,722 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 14:32:36,722 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 14:32:36,723 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 14:32:36,723 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 14:32:36,723 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-06 14:32:36,724 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-06 14:32:36,724 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 14:32:36,724 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-06 14:32:36,725 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 14:32:36,725 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 14:32:36,725 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 14:32:36,725 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 14:32:36,726 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 14:32:36,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 14:32:36,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 14:32:36,727 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 14:32:36,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 14:32:36,727 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 14:32:36,727 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-06 14:32:36,728 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-06 14:32:36,728 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 14:32:36,728 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 14:32:36,728 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 14:32:36,729 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 14:32:36,729 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX [2024-11-06 14:32:36,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 14:32:36,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 14:32:36,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 14:32:36,984 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 14:32:36,985 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 14:32:36,986 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c [2024-11-06 14:32:38,330 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 14:32:38,605 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 14:32:38,606 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c [2024-11-06 14:32:38,622 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/565e73cda/64e1db1dec424f478d736607c011e88f/FLAG3ad9ea53e [2024-11-06 14:32:38,638 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/565e73cda/64e1db1dec424f478d736607c011e88f [2024-11-06 14:32:38,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 14:32:38,642 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-06 14:32:38,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 14:32:38,644 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 14:32:38,648 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 14:32:38,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:32:38" (1/1) ... [2024-11-06 14:32:38,650 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9a4e7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:32:38, skipping insertion in model container [2024-11-06 14:32:38,650 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:32:38" (1/1) ... [2024-11-06 14:32:38,700 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 14:32:38,896 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c[1270,1283] [2024-11-06 14:32:39,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 14:32:39,114 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 14:32:39,152 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c[1270,1283] [2024-11-06 14:32:39,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 14:32:39,254 INFO L204 MainTranslator]: Completed translation [2024-11-06 14:32:39,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:32:39 WrapperNode [2024-11-06 14:32:39,257 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 14:32:39,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 14:32:39,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 14:32:39,261 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 14:32:39,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:32:39" (1/1) ... [2024-11-06 14:32:39,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:32:39" (1/1) ... [2024-11-06 14:32:39,369 INFO L138 Inliner]: procedures = 18, calls = 41, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 953 [2024-11-06 14:32:39,373 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 14:32:39,374 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 14:32:39,374 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 14:32:39,374 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 14:32:39,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:32:39" (1/1) ... [2024-11-06 14:32:39,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:32:39" (1/1) ... [2024-11-06 14:32:39,401 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:32:39" (1/1) ... [2024-11-06 14:32:39,433 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 9, 9]. 45 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 8 writes are split as follows [0, 4, 4]. [2024-11-06 14:32:39,434 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:32:39" (1/1) ... [2024-11-06 14:32:39,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:32:39" (1/1) ... [2024-11-06 14:32:39,475 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:32:39" (1/1) ... [2024-11-06 14:32:39,485 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:32:39" (1/1) ... [2024-11-06 14:32:39,490 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:32:39" (1/1) ... [2024-11-06 14:32:39,494 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:32:39" (1/1) ... [2024-11-06 14:32:39,506 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 14:32:39,510 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 14:32:39,510 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 14:32:39,510 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 14:32:39,511 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:32:39" (1/1) ... [2024-11-06 14:32:39,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 14:32:39,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:32:39,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 14:32:39,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 14:32:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 14:32:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-06 14:32:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-06 14:32:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-06 14:32:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-06 14:32:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-06 14:32:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-06 14:32:39,575 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 14:32:39,576 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 14:32:39,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-06 14:32:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 14:32:39,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 14:32:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-06 14:32:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-06 14:32:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-06 14:32:39,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-06 14:32:39,804 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 14:32:39,805 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 14:32:40,559 INFO L? ?]: Removed 675 outVars from TransFormulas that were not future-live. [2024-11-06 14:32:40,560 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 14:32:40,571 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 14:32:40,572 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-06 14:32:40,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:32:40 BoogieIcfgContainer [2024-11-06 14:32:40,572 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 14:32:40,575 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 14:32:40,575 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 14:32:40,578 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 14:32:40,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:32:38" (1/3) ... [2024-11-06 14:32:40,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0ec9c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:32:40, skipping insertion in model container [2024-11-06 14:32:40,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:32:39" (2/3) ... [2024-11-06 14:32:40,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0ec9c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:32:40, skipping insertion in model container [2024-11-06 14:32:40,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:32:40" (3/3) ... [2024-11-06 14:32:40,581 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_arbitrated_fifos_n2d8w8.c [2024-11-06 14:32:40,596 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 14:32:40,597 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 14:32:40,648 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 14:32:40,654 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;@55b5bda0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 14:32:40,654 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 14:32:40,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 35 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-06 14:32:40,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-06 14:32:40,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:32:40,667 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 14:32:40,667 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:32:40,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:32:40,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1919498836, now seen corresponding path program 1 times [2024-11-06 14:32:40,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:32:40,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1439369358] [2024-11-06 14:32:40,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 14:32:40,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:40,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:32:40,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 14:32:40,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 14:32:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 14:32:41,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-06 14:32:41,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:32:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-06 14:32:41,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 14:32:41,123 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:32:41,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439369358] [2024-11-06 14:32:41,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439369358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 14:32:41,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 14:32:41,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 14:32:41,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224123229] [2024-11-06 14:32:41,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 14:32:41,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 14:32:41,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:32:41,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 14:32:41,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 14:32:41,156 INFO L87 Difference]: Start difference. First operand has 42 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 35 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-06 14:32:41,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:32:41,176 INFO L93 Difference]: Finished difference Result 77 states and 117 transitions. [2024-11-06 14:32:41,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 14:32:41,178 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 39 [2024-11-06 14:32:41,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:32:41,184 INFO L225 Difference]: With dead ends: 77 [2024-11-06 14:32:41,184 INFO L226 Difference]: Without dead ends: 39 [2024-11-06 14:32:41,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 14:32:41,192 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 14:32:41,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 14:32:41,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-06 14:32:41,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-06 14:32:41,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-06 14:32:41,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-11-06 14:32:41,228 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 39 [2024-11-06 14:32:41,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:32:41,229 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-11-06 14:32:41,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-06 14:32:41,229 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-11-06 14:32:41,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-06 14:32:41,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:32:41,231 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 14:32:41,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 14:32:41,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:41,435 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:32:41,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:32:41,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1633554172, now seen corresponding path program 1 times [2024-11-06 14:32:41,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:32:41,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398062862] [2024-11-06 14:32:41,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 14:32:41,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:41,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:32:41,439 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 14:32:41,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 14:32:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 14:32:41,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 14:32:41,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:32:41,832 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-06 14:32:41,832 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 14:32:41,832 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:32:41,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398062862] [2024-11-06 14:32:41,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398062862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 14:32:41,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 14:32:41,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 14:32:41,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899779412] [2024-11-06 14:32:41,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 14:32:41,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 14:32:41,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:32:41,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 14:32:41,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 14:32:41,836 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-06 14:32:41,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:32:41,855 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2024-11-06 14:32:41,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 14:32:41,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 39 [2024-11-06 14:32:41,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:32:41,857 INFO L225 Difference]: With dead ends: 76 [2024-11-06 14:32:41,857 INFO L226 Difference]: Without dead ends: 41 [2024-11-06 14:32:41,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 14:32:41,859 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 1 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 14:32:41,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 91 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 14:32:41,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-06 14:32:41,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2024-11-06 14:32:41,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-06 14:32:41,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2024-11-06 14:32:41,869 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 39 [2024-11-06 14:32:41,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:32:41,870 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2024-11-06 14:32:41,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-06 14:32:41,870 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2024-11-06 14:32:41,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-06 14:32:41,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:32:41,872 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 14:32:41,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 14:32:42,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:42,073 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:32:42,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:32:42,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1034306366, now seen corresponding path program 1 times [2024-11-06 14:32:42,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:32:42,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208196660] [2024-11-06 14:32:42,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 14:32:42,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:42,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:32:42,077 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 14:32:42,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 14:32:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 14:32:42,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 14:32:42,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:32:42,411 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-06 14:32:42,413 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 14:32:42,413 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:32:42,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208196660] [2024-11-06 14:32:42,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208196660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 14:32:42,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 14:32:42,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 14:32:42,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168898243] [2024-11-06 14:32:42,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 14:32:42,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 14:32:42,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:32:42,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 14:32:42,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 14:32:42,417 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-06 14:32:42,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:32:42,446 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2024-11-06 14:32:42,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 14:32:42,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2024-11-06 14:32:42,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:32:42,449 INFO L225 Difference]: With dead ends: 74 [2024-11-06 14:32:42,449 INFO L226 Difference]: Without dead ends: 42 [2024-11-06 14:32:42,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 14:32:42,451 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 1 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 14:32:42,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 90 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 14:32:42,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-06 14:32:42,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2024-11-06 14:32:42,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-06 14:32:42,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2024-11-06 14:32:42,457 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 41 [2024-11-06 14:32:42,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:32:42,457 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2024-11-06 14:32:42,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-06 14:32:42,457 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2024-11-06 14:32:42,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-06 14:32:42,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:32:42,458 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 14:32:42,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-06 14:32:42,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:42,659 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:32:42,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:32:42,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1886682944, now seen corresponding path program 1 times [2024-11-06 14:32:42,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:32:42,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673104708] [2024-11-06 14:32:42,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 14:32:42,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:42,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:32:42,663 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 14:32:42,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 14:32:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 14:32:43,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 14:32:43,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:32:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-06 14:32:43,066 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 14:32:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-06 14:32:43,142 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:32:43,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673104708] [2024-11-06 14:32:43,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673104708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 14:32:43,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 14:32:43,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2024-11-06 14:32:43,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807984557] [2024-11-06 14:32:43,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 14:32:43,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 14:32:43,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:32:43,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 14:32:43,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-06 14:32:43,144 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-06 14:32:43,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:32:43,207 INFO L93 Difference]: Finished difference Result 83 states and 105 transitions. [2024-11-06 14:32:43,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 14:32:43,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 43 [2024-11-06 14:32:43,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:32:43,210 INFO L225 Difference]: With dead ends: 83 [2024-11-06 14:32:43,210 INFO L226 Difference]: Without dead ends: 47 [2024-11-06 14:32:43,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-06 14:32:43,211 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 4 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 14:32:43,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 179 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 14:32:43,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-06 14:32:43,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-06 14:32:43,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-06 14:32:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2024-11-06 14:32:43,222 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 43 [2024-11-06 14:32:43,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:32:43,222 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2024-11-06 14:32:43,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-06 14:32:43,222 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2024-11-06 14:32:43,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-06 14:32:43,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:32:43,224 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 14:32:43,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-06 14:32:43,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:43,425 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:32:43,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:32:43,425 INFO L85 PathProgramCache]: Analyzing trace with hash 347467898, now seen corresponding path program 2 times [2024-11-06 14:32:43,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:32:43,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124698409] [2024-11-06 14:32:43,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 14:32:43,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:43,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:32:43,428 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 14:32:43,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 14:32:43,772 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-06 14:32:43,773 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 14:32:43,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-06 14:32:43,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:32:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-06 14:32:44,033 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 14:32:44,033 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:32:44,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124698409] [2024-11-06 14:32:44,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124698409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 14:32:44,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 14:32:44,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 14:32:44,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816781082] [2024-11-06 14:32:44,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 14:32:44,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 14:32:44,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:32:44,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 14:32:44,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 14:32:44,035 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-06 14:32:44,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:32:44,222 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2024-11-06 14:32:44,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 14:32:44,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2024-11-06 14:32:44,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:32:44,223 INFO L225 Difference]: With dead ends: 61 [2024-11-06 14:32:44,223 INFO L226 Difference]: Without dead ends: 59 [2024-11-06 14:32:44,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-06 14:32:44,224 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 34 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 14:32:44,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 112 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 14:32:44,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-06 14:32:44,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-06 14:32:44,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-06 14:32:44,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2024-11-06 14:32:44,234 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 49 [2024-11-06 14:32:44,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:32:44,236 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2024-11-06 14:32:44,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-06 14:32:44,236 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2024-11-06 14:32:44,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-06 14:32:44,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:32:44,237 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 14:32:44,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 14:32:44,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:44,438 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:32:44,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:32:44,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1155737283, now seen corresponding path program 1 times [2024-11-06 14:32:44,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:32:44,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417721113] [2024-11-06 14:32:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 14:32:44,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:44,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:32:44,442 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 14:32:44,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 14:32:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 14:32:45,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 14:32:45,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:32:45,076 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-06 14:32:45,077 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 14:32:45,077 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:32:45,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417721113] [2024-11-06 14:32:45,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417721113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 14:32:45,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 14:32:45,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 14:32:45,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147205558] [2024-11-06 14:32:45,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 14:32:45,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 14:32:45,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:32:45,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 14:32:45,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 14:32:45,079 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-06 14:32:45,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:32:45,131 INFO L93 Difference]: Finished difference Result 92 states and 116 transitions. [2024-11-06 14:32:45,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 14:32:45,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2024-11-06 14:32:45,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:32:45,138 INFO L225 Difference]: With dead ends: 92 [2024-11-06 14:32:45,138 INFO L226 Difference]: Without dead ends: 61 [2024-11-06 14:32:45,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 14:32:45,139 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 1 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 14:32:45,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 90 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 14:32:45,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-06 14:32:45,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-11-06 14:32:45,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 48 states have internal predecessors, (55), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-06 14:32:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2024-11-06 14:32:45,151 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 90 [2024-11-06 14:32:45,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:32:45,152 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2024-11-06 14:32:45,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-06 14:32:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2024-11-06 14:32:45,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-06 14:32:45,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:32:45,154 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 14:32:45,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-06 14:32:45,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:45,355 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:32:45,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:32:45,355 INFO L85 PathProgramCache]: Analyzing trace with hash -995909317, now seen corresponding path program 1 times [2024-11-06 14:32:45,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:32:45,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133675514] [2024-11-06 14:32:45,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 14:32:45,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:45,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:32:45,358 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 14:32:45,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 14:32:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 14:32:45,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 14:32:45,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:32:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-06 14:32:45,992 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 14:32:45,992 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:32:45,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133675514] [2024-11-06 14:32:45,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133675514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 14:32:45,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 14:32:45,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 14:32:45,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609765205] [2024-11-06 14:32:45,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 14:32:45,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 14:32:45,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:32:45,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 14:32:45,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 14:32:45,997 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-06 14:32:46,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:32:46,028 INFO L93 Difference]: Finished difference Result 94 states and 118 transitions. [2024-11-06 14:32:46,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 14:32:46,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2024-11-06 14:32:46,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:32:46,036 INFO L225 Difference]: With dead ends: 94 [2024-11-06 14:32:46,036 INFO L226 Difference]: Without dead ends: 62 [2024-11-06 14:32:46,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 14:32:46,038 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 1 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 14:32:46,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 90 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 14:32:46,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-06 14:32:46,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2024-11-06 14:32:46,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-06 14:32:46,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2024-11-06 14:32:46,055 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 92 [2024-11-06 14:32:46,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:32:46,055 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2024-11-06 14:32:46,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-06 14:32:46,055 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2024-11-06 14:32:46,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-06 14:32:46,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:32:46,057 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 14:32:46,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-06 14:32:46,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:46,263 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:32:46,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:32:46,263 INFO L85 PathProgramCache]: Analyzing trace with hash 198734201, now seen corresponding path program 1 times [2024-11-06 14:32:46,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:32:46,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739609262] [2024-11-06 14:32:46,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 14:32:46,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:46,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:32:46,266 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 14:32:46,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 14:32:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 14:32:46,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 14:32:46,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:32:46,905 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-06 14:32:46,905 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 14:32:46,906 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:32:46,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739609262] [2024-11-06 14:32:46,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739609262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 14:32:46,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 14:32:46,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 14:32:46,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753873128] [2024-11-06 14:32:46,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 14:32:46,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 14:32:46,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:32:46,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 14:32:46,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 14:32:46,909 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-06 14:32:46,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:32:46,927 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2024-11-06 14:32:46,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 14:32:46,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2024-11-06 14:32:46,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:32:46,928 INFO L225 Difference]: With dead ends: 96 [2024-11-06 14:32:46,928 INFO L226 Difference]: Without dead ends: 63 [2024-11-06 14:32:46,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 14:32:46,929 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 1 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 14:32:46,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 90 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 14:32:46,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-06 14:32:46,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2024-11-06 14:32:46,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 50 states have (on average 1.14) internal successors, (57), 50 states have internal predecessors, (57), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-06 14:32:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2024-11-06 14:32:46,937 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 94 [2024-11-06 14:32:46,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:32:46,938 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2024-11-06 14:32:46,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-06 14:32:46,938 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2024-11-06 14:32:46,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-06 14:32:46,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:32:46,939 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 14:32:46,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-06 14:32:47,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:47,140 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:32:47,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:32:47,141 INFO L85 PathProgramCache]: Analyzing trace with hash -107271689, now seen corresponding path program 1 times [2024-11-06 14:32:47,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:32:47,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [327285641] [2024-11-06 14:32:47,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 14:32:47,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:47,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:32:47,143 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 14:32:47,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-06 14:32:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 14:32:47,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 14:32:47,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:32:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-06 14:32:47,817 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 14:32:47,817 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:32:47,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327285641] [2024-11-06 14:32:47,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327285641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 14:32:47,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 14:32:47,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 14:32:47,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878687587] [2024-11-06 14:32:47,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 14:32:47,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 14:32:47,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:32:47,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 14:32:47,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 14:32:47,819 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-06 14:32:47,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:32:47,842 INFO L93 Difference]: Finished difference Result 98 states and 122 transitions. [2024-11-06 14:32:47,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 14:32:47,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2024-11-06 14:32:47,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:32:47,843 INFO L225 Difference]: With dead ends: 98 [2024-11-06 14:32:47,843 INFO L226 Difference]: Without dead ends: 64 [2024-11-06 14:32:47,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 14:32:47,844 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 1 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 14:32:47,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 90 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 14:32:47,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-06 14:32:47,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2024-11-06 14:32:47,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 51 states have internal predecessors, (58), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-06 14:32:47,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2024-11-06 14:32:47,857 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 96 [2024-11-06 14:32:47,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:32:47,857 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2024-11-06 14:32:47,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-06 14:32:47,858 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2024-11-06 14:32:47,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-06 14:32:47,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:32:47,859 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 14:32:47,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-06 14:32:48,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:48,060 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:32:48,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:32:48,060 INFO L85 PathProgramCache]: Analyzing trace with hash 969910965, now seen corresponding path program 1 times [2024-11-06 14:32:48,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:32:48,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [351343863] [2024-11-06 14:32:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 14:32:48,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:48,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:32:48,062 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 14:32:48,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-06 14:32:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 14:32:48,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 14:32:48,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:32:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2024-11-06 14:32:48,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 14:32:48,819 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2024-11-06 14:32:48,820 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:32:48,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351343863] [2024-11-06 14:32:48,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351343863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 14:32:48,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 14:32:48,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2024-11-06 14:32:48,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750173044] [2024-11-06 14:32:48,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 14:32:48,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 14:32:48,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:32:48,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 14:32:48,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-06 14:32:48,822 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-06 14:32:48,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:32:48,879 INFO L93 Difference]: Finished difference Result 117 states and 148 transitions. [2024-11-06 14:32:48,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 14:32:48,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 98 [2024-11-06 14:32:48,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:32:48,880 INFO L225 Difference]: With dead ends: 117 [2024-11-06 14:32:48,880 INFO L226 Difference]: Without dead ends: 69 [2024-11-06 14:32:48,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-06 14:32:48,881 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 14:32:48,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 262 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 14:32:48,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-06 14:32:48,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-06 14:32:48,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 57 states have (on average 1.1228070175438596) internal successors, (64), 57 states have internal predecessors, (64), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-06 14:32:48,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2024-11-06 14:32:48,889 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 98 [2024-11-06 14:32:48,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:32:48,890 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2024-11-06 14:32:48,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-06 14:32:48,890 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2024-11-06 14:32:48,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-06 14:32:48,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:32:48,891 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 14:32:48,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-06 14:32:49,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:49,092 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:32:49,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:32:49,092 INFO L85 PathProgramCache]: Analyzing trace with hash 586795643, now seen corresponding path program 2 times [2024-11-06 14:32:49,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:32:49,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946419036] [2024-11-06 14:32:49,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 14:32:49,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:49,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:32:49,095 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 14:32:49,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-06 14:32:49,804 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 14:32:49,804 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 14:32:49,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 14:32:49,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:32:49,838 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 112 proven. 1 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-06 14:32:49,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 14:32:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-11-06 14:32:49,909 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:32:49,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946419036] [2024-11-06 14:32:49,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946419036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 14:32:49,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 14:32:49,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2024-11-06 14:32:49,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355431850] [2024-11-06 14:32:49,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 14:32:49,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 14:32:49,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:32:49,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 14:32:49,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-06 14:32:49,912 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-06 14:32:49,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:32:49,995 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2024-11-06 14:32:49,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 14:32:49,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 104 [2024-11-06 14:32:49,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:32:49,999 INFO L225 Difference]: With dead ends: 110 [2024-11-06 14:32:49,999 INFO L226 Difference]: Without dead ends: 75 [2024-11-06 14:32:49,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-06 14:32:50,000 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 4 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 14:32:50,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 133 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 14:32:50,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-06 14:32:50,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-06 14:32:50,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 63 states have internal predecessors, (70), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-06 14:32:50,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2024-11-06 14:32:50,013 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 104 [2024-11-06 14:32:50,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:32:50,014 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2024-11-06 14:32:50,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-06 14:32:50,014 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2024-11-06 14:32:50,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-06 14:32:50,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:32:50,015 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 14:32:50,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-06 14:32:50,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:50,216 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:32:50,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:32:50,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1528404619, now seen corresponding path program 3 times [2024-11-06 14:32:50,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:32:50,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087700319] [2024-11-06 14:32:50,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 14:32:50,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:50,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:32:50,219 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 14:32:50,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-06 14:32:50,975 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-06 14:32:50,975 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 14:32:50,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 14:32:50,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:32:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 112 proven. 1 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-06 14:32:51,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 14:32:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2024-11-06 14:32:51,073 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:32:51,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087700319] [2024-11-06 14:32:51,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087700319] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 14:32:51,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 14:32:51,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2024-11-06 14:32:51,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260015256] [2024-11-06 14:32:51,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 14:32:51,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 14:32:51,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:32:51,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 14:32:51,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-06 14:32:51,075 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-06 14:32:51,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:32:51,137 INFO L93 Difference]: Finished difference Result 122 states and 148 transitions. [2024-11-06 14:32:51,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 14:32:51,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 110 [2024-11-06 14:32:51,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:32:51,138 INFO L225 Difference]: With dead ends: 122 [2024-11-06 14:32:51,139 INFO L226 Difference]: Without dead ends: 81 [2024-11-06 14:32:51,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-06 14:32:51,139 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 4 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 14:32:51,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 133 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 14:32:51,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-06 14:32:51,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-06 14:32:51,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 69 states have internal predecessors, (76), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-06 14:32:51,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2024-11-06 14:32:51,148 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 110 [2024-11-06 14:32:51,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:32:51,148 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2024-11-06 14:32:51,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-06 14:32:51,148 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2024-11-06 14:32:51,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-06 14:32:51,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:32:51,149 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 14:32:51,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-06 14:32:51,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:51,350 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:32:51,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:32:51,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1575429265, now seen corresponding path program 4 times [2024-11-06 14:32:51,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:32:51,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083562522] [2024-11-06 14:32:51,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 14:32:51,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:51,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:32:51,353 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 14:32:51,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-06 14:32:52,083 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 14:32:52,084 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 14:32:52,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 14:32:52,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:32:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 112 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-06 14:32:52,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 14:32:52,175 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-06 14:32:52,175 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:32:52,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083562522] [2024-11-06 14:32:52,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083562522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 14:32:52,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 14:32:52,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2024-11-06 14:32:52,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611799368] [2024-11-06 14:32:52,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 14:32:52,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 14:32:52,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:32:52,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 14:32:52,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-06 14:32:52,178 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-06 14:32:52,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:32:52,227 INFO L93 Difference]: Finished difference Result 134 states and 160 transitions. [2024-11-06 14:32:52,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 14:32:52,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2024-11-06 14:32:52,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:32:52,229 INFO L225 Difference]: With dead ends: 134 [2024-11-06 14:32:52,229 INFO L226 Difference]: Without dead ends: 87 [2024-11-06 14:32:52,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-06 14:32:52,230 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 4 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 14:32:52,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 176 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 14:32:52,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-06 14:32:52,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-06 14:32:52,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 75 states have internal predecessors, (82), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-06 14:32:52,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2024-11-06 14:32:52,238 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 116 [2024-11-06 14:32:52,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:32:52,239 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2024-11-06 14:32:52,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-06 14:32:52,239 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2024-11-06 14:32:52,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-06 14:32:52,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:32:52,240 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 14:32:52,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-06 14:32:52,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:52,441 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:32:52,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:32:52,441 INFO L85 PathProgramCache]: Analyzing trace with hash -319709911, now seen corresponding path program 5 times [2024-11-06 14:32:52,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:32:52,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664422988] [2024-11-06 14:32:52,442 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 14:32:52,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:52,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:32:52,443 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 14:32:52,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-06 14:32:55,652 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-06 14:32:55,652 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 14:32:55,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 14:32:55,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:32:55,684 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 112 proven. 1 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-06 14:32:55,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 14:32:55,750 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-06 14:32:55,750 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:32:55,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664422988] [2024-11-06 14:32:55,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664422988] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 14:32:55,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 14:32:55,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2024-11-06 14:32:55,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294211566] [2024-11-06 14:32:55,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 14:32:55,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 14:32:55,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:32:55,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 14:32:55,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-06 14:32:55,752 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-06 14:32:55,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:32:55,835 INFO L93 Difference]: Finished difference Result 146 states and 172 transitions. [2024-11-06 14:32:55,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 14:32:55,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 122 [2024-11-06 14:32:55,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:32:55,838 INFO L225 Difference]: With dead ends: 146 [2024-11-06 14:32:55,838 INFO L226 Difference]: Without dead ends: 93 [2024-11-06 14:32:55,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-06 14:32:55,839 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 14:32:55,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 262 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 14:32:55,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-06 14:32:55,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-06 14:32:55,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 81 states have internal predecessors, (88), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-06 14:32:55,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 108 transitions. [2024-11-06 14:32:55,847 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 108 transitions. Word has length 122 [2024-11-06 14:32:55,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:32:55,847 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 108 transitions. [2024-11-06 14:32:55,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-06 14:32:55,848 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 108 transitions. [2024-11-06 14:32:55,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-06 14:32:55,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:32:55,849 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 14:32:55,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-06 14:32:56,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:56,049 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:32:56,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:32:56,050 INFO L85 PathProgramCache]: Analyzing trace with hash -2120532765, now seen corresponding path program 6 times [2024-11-06 14:32:56,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:32:56,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421277446] [2024-11-06 14:32:56,051 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 14:32:56,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:32:56,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:32:56,052 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 14:32:56,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-06 14:32:57,457 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-06 14:32:57,457 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 14:32:57,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-06 14:32:57,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:32:58,201 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-06 14:32:58,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 14:32:58,287 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:32:58,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421277446] [2024-11-06 14:32:58,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421277446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 14:32:58,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1911533724] [2024-11-06 14:32:58,287 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 14:32:58,288 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-06 14:32:58,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-06 14:32:58,290 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-06 14:32:58,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-06 14:33:00,178 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-06 14:33:00,179 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 14:33:00,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-06 14:33:00,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:33:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 12 proven. 27 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-06 14:33:01,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 14:33:01,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1911533724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 14:33:01,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 14:33:01,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 17 [2024-11-06 14:33:01,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782979742] [2024-11-06 14:33:01,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 14:33:01,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-06 14:33:01,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:33:01,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-06 14:33:01,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-11-06 14:33:01,152 INFO L87 Difference]: Start difference. First operand 93 states and 108 transitions. Second operand has 17 states, 15 states have (on average 5.133333333333334) internal successors, (77), 16 states have internal predecessors, (77), 5 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-06 14:33:01,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:33:01,838 INFO L93 Difference]: Finished difference Result 169 states and 195 transitions. [2024-11-06 14:33:01,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 14:33:01,839 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.133333333333334) internal successors, (77), 16 states have internal predecessors, (77), 5 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 128 [2024-11-06 14:33:01,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:33:01,840 INFO L225 Difference]: With dead ends: 169 [2024-11-06 14:33:01,840 INFO L226 Difference]: Without dead ends: 167 [2024-11-06 14:33:01,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2024-11-06 14:33:01,841 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 58 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 14:33:01,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 462 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 14:33:01,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-06 14:33:01,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 146. [2024-11-06 14:33:01,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 129 states have (on average 1.0852713178294573) internal successors, (140), 129 states have internal predecessors, (140), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-06 14:33:01,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 170 transitions. [2024-11-06 14:33:01,862 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 170 transitions. Word has length 128 [2024-11-06 14:33:01,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:33:01,863 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 170 transitions. [2024-11-06 14:33:01,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.133333333333334) internal successors, (77), 16 states have internal predecessors, (77), 5 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-06 14:33:01,863 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 170 transitions. [2024-11-06 14:33:01,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-06 14:33:01,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:33:01,868 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 14:33:01,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2024-11-06 14:33:02,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-06 14:33:02,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:33:02,268 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:33:02,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:33:02,269 INFO L85 PathProgramCache]: Analyzing trace with hash 784920788, now seen corresponding path program 7 times [2024-11-06 14:33:02,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:33:02,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807421951] [2024-11-06 14:33:02,270 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 14:33:02,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:33:02,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:33:02,271 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 14:33:02,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-06 14:33:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 14:33:03,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 2034 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 14:33:03,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:33:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 308 proven. 16 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2024-11-06 14:33:03,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 14:33:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 108 proven. 16 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2024-11-06 14:33:03,706 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:33:03,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807421951] [2024-11-06 14:33:03,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807421951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 14:33:03,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 14:33:03,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2024-11-06 14:33:03,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716535057] [2024-11-06 14:33:03,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 14:33:03,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-06 14:33:03,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:33:03,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-06 14:33:03,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-06 14:33:03,710 INFO L87 Difference]: Start difference. First operand 146 states and 170 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-06 14:33:03,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:33:03,946 INFO L93 Difference]: Finished difference Result 262 states and 313 transitions. [2024-11-06 14:33:03,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-06 14:33:03,947 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 201 [2024-11-06 14:33:03,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:33:03,949 INFO L225 Difference]: With dead ends: 262 [2024-11-06 14:33:03,950 INFO L226 Difference]: Without dead ends: 170 [2024-11-06 14:33:03,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2024-11-06 14:33:03,952 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 5 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 14:33:03,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 304 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 14:33:03,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-06 14:33:03,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-11-06 14:33:03,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 153 states have (on average 1.0849673202614378) internal successors, (166), 153 states have internal predecessors, (166), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-06 14:33:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 196 transitions. [2024-11-06 14:33:03,976 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 196 transitions. Word has length 201 [2024-11-06 14:33:03,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:33:03,976 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 196 transitions. [2024-11-06 14:33:03,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-06 14:33:03,976 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 196 transitions. [2024-11-06 14:33:03,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-06 14:33:03,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:33:03,978 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 14:33:04,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-06 14:33:04,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:33:04,179 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:33:04,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:33:04,179 INFO L85 PathProgramCache]: Analyzing trace with hash -341795116, now seen corresponding path program 8 times [2024-11-06 14:33:04,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:33:04,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256314194] [2024-11-06 14:33:04,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 14:33:04,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:33:04,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:33:04,182 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 14:33:04,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-06 14:33:05,445 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 14:33:05,445 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 14:33:05,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 2082 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 14:33:05,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:33:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-11-06 14:33:05,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 14:33:05,665 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-11-06 14:33:05,665 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:33:05,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256314194] [2024-11-06 14:33:05,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256314194] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 14:33:05,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 14:33:05,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2024-11-06 14:33:05,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052398542] [2024-11-06 14:33:05,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 14:33:05,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-06 14:33:05,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:33:05,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-06 14:33:05,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-06 14:33:05,667 INFO L87 Difference]: Start difference. First operand 170 states and 196 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-06 14:33:05,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:33:05,814 INFO L93 Difference]: Finished difference Result 341 states and 398 transitions. [2024-11-06 14:33:05,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-06 14:33:05,816 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 217 [2024-11-06 14:33:05,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:33:05,817 INFO L225 Difference]: With dead ends: 341 [2024-11-06 14:33:05,817 INFO L226 Difference]: Without dead ends: 182 [2024-11-06 14:33:05,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2024-11-06 14:33:05,818 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 14:33:05,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 266 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 14:33:05,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-06 14:33:05,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-06 14:33:05,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 165 states have (on average 1.084848484848485) internal successors, (179), 165 states have internal predecessors, (179), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-06 14:33:05,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 209 transitions. [2024-11-06 14:33:05,835 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 209 transitions. Word has length 217 [2024-11-06 14:33:05,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:33:05,835 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 209 transitions. [2024-11-06 14:33:05,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-06 14:33:05,835 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 209 transitions. [2024-11-06 14:33:05,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-06 14:33:05,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:33:05,836 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 14:33:05,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-06 14:33:06,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:33:06,037 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:33:06,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:33:06,037 INFO L85 PathProgramCache]: Analyzing trace with hash -115174708, now seen corresponding path program 9 times [2024-11-06 14:33:06,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:33:06,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622133163] [2024-11-06 14:33:06,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 14:33:06,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:33:06,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:33:06,040 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 14:33:06,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-06 14:33:08,905 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-06 14:33:08,905 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 14:33:08,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 216 conjuncts are in the unsatisfiable core [2024-11-06 14:33:08,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:33:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 72 proven. 353 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2024-11-06 14:33:15,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 14:33:20,578 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse8 (= (_ bv0 8) |c_ULTIMATE.start_main_~input_9~0#1|)) (.cse3 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse11 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_83~0#1|)) (.cse5 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_15~0#1|))) (let ((.cse9 (forall ((|v_ULTIMATE.start_main_~var_98_arg_1~0#1_54| (_ BitVec 8))) (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_98_arg_1~0#1_54|))) .cse5)))))) (.cse6 (forall ((|v_ULTIMATE.start_main_~var_89_arg_1~0#1_55| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_113_arg_0~0#1_56| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_86_arg_1~0#1_55| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_105_arg_1~0#1_55| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_105_arg_1~0#1_55|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv254 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_86_arg_1~0#1_55|) .cse11))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_89_arg_1~0#1_55|)))))))))))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_113_arg_0~0#1_56|))))))))) (.cse2 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_87~0#1|)) (.cse4 ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse11)))) (.cse7 (not .cse8)) (.cse10 (forall ((|v_ULTIMATE.start_main_~var_98_arg_1~0#1_54| (_ BitVec 8))) (not (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_98_arg_1~0#1_54|))) .cse5))))))) (.cse1 (forall ((|v_ULTIMATE.start_main_~var_89_arg_1~0#1_55| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_113_arg_0~0#1_56| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_86_arg_1~0#1_55| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_105_arg_1~0#1_55| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_113_arg_0~0#1_56|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_105_arg_1~0#1_55|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv255 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_86_arg_1~0#1_55|) .cse11))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_89_arg_1~0#1_55|)))))))))))))))))))))))) (.cse0 (bvsge ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_55~0#1|) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse5 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_27~0#1|))))))) (and (or .cse0 (and (or (and (or .cse1 (forall ((|v_ULTIMATE.start_main_~var_92_arg_0~0#1_54| (_ BitVec 8))) (not (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse2 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_92_arg_0~0#1_54|) .cse4))))))))))))) .cse5))))))) (or .cse6 (forall ((|v_ULTIMATE.start_main_~var_92_arg_0~0#1_54| (_ BitVec 8))) (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse2 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_92_arg_0~0#1_54|) .cse4))))))))))))) .cse5))))))) .cse7) (or .cse8 (and (or .cse9 .cse6) (or .cse10 .cse1))))) (or (and (or (and (or .cse8 .cse9) (or .cse7 (forall ((|v_ULTIMATE.start_main_~var_92_arg_0~0#1_54| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_58_arg_0~0#1_54| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_60_arg_1~0#1_54| (_ BitVec 8))) (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse5 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse2 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_92_arg_0~0#1_54|) .cse4))))))))) (bvneg ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_60_arg_1~0#1_54|) ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv1 32) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_58_arg_0~0#1_54|))))))) .cse3))))))))))))))))))) .cse6) (or (and (or (forall ((|v_ULTIMATE.start_main_~var_92_arg_0~0#1_54| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_58_arg_0~0#1_54| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_60_arg_1~0#1_54| (_ BitVec 8))) (not (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse5 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse2 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_92_arg_0~0#1_54|) .cse4))))))))) (bvneg ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_60_arg_1~0#1_54|) ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv1 32) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_58_arg_0~0#1_54|))))))) .cse3)))))))))))))))))) .cse7) (or .cse8 .cse10)) .cse1)) (not .cse0))))) is different from false [2024-11-06 14:33:25,572 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:33:25,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622133163] [2024-11-06 14:33:25,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622133163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 14:33:25,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1001509805] [2024-11-06 14:33:25,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 14:33:25,573 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-06 14:33:25,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-06 14:33:25,575 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-06 14:33:25,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-06 14:33:29,063 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-06 14:33:29,064 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 14:33:29,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-11-06 14:33:29,156 INFO L278 TraceCheckSpWp]: Computing forward predicates...