/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/floats-nonlinear/color-magicseries1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 04:09:33,758 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 04:09:33,812 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 04:09:33,816 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 04:09:33,817 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 04:09:33,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 04:09:33,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 04:09:33,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 04:09:33,837 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 04:09:33,838 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 04:09:33,838 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 04:09:33,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 04:09:33,839 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 04:09:33,839 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 04:09:33,840 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 04:09:33,840 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 04:09:33,840 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 04:09:33,841 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 04:09:33,841 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 04:09:33,841 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 04:09:33,841 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 04:09:33,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 04:09:33,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 04:09:33,843 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 04:09:33,843 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 04:09:33,843 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 04:09:33,843 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 04:09:33,844 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 04:09:33,844 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 04:09:33,844 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 04:09:33,845 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 04:09:33,845 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 04:09:33,848 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 04:09:33,848 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 04:09:33,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 04:09:33,849 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 04:09:33,849 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 04:09:33,849 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 04:09:33,849 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 04:09:33,849 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:33,850 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 04:09:33,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 04:09:33,850 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 04:09:33,851 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 04:09:33,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:34,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 04:09:34,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 04:09:34,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 04:09:34,116 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 04:09:34,117 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 04:09:34,118 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-nonlinear/color-magicseries1.c [2024-11-03 04:09:35,674 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 04:09:35,882 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 04:09:35,883 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries1.c [2024-11-03 04:09:35,892 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51022e1fd/3852c8b8fcb7472d975f54527c23c22e/FLAGc268e4c52 [2024-11-03 04:09:35,912 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51022e1fd/3852c8b8fcb7472d975f54527c23c22e [2024-11-03 04:09:35,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 04:09:35,919 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 04:09:35,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 04:09:35,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 04:09:35,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 04:09:35,927 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:35" (1/1) ... [2024-11-03 04:09:35,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f192f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:35, skipping insertion in model container [2024-11-03 04:09:35,929 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:35" (1/1) ... [2024-11-03 04:09:35,952 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 04:09:36,120 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries1.c[613,626] [2024-11-03 04:09:36,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 04:09:36,151 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 04:09:36,161 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries1.c[613,626] [2024-11-03 04:09:36,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 04:09:36,188 INFO L204 MainTranslator]: Completed translation [2024-11-03 04:09:36,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:36 WrapperNode [2024-11-03 04:09:36,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 04:09:36,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 04:09:36,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 04:09:36,190 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 04:09:36,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:36" (1/1) ... [2024-11-03 04:09:36,207 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:36" (1/1) ... [2024-11-03 04:09:36,231 INFO L138 Inliner]: procedures = 20, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 127 [2024-11-03 04:09:36,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 04:09:36,232 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 04:09:36,232 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 04:09:36,232 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 04:09:36,245 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:36" (1/1) ... [2024-11-03 04:09:36,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:36" (1/1) ... [2024-11-03 04:09:36,249 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:36" (1/1) ... [2024-11-03 04:09:36,272 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 4]. The 0 writes are split as follows [0, 0]. [2024-11-03 04:09:36,272 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:36" (1/1) ... [2024-11-03 04:09:36,273 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:36" (1/1) ... [2024-11-03 04:09:36,287 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:36" (1/1) ... [2024-11-03 04:09:36,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:36" (1/1) ... [2024-11-03 04:09:36,292 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:36" (1/1) ... [2024-11-03 04:09:36,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:36" (1/1) ... [2024-11-03 04:09:36,296 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 04:09:36,297 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 04:09:36,297 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 04:09:36,297 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 04:09:36,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:36" (1/1) ... [2024-11-03 04:09:36,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 04:09:36,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 04:09:36,327 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) [2024-11-03 04:09:36,329 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 [2024-11-03 04:09:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 04:09:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 04:09:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 04:09:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-03 04:09:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-03 04:09:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 04:09:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-03 04:09:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-03 04:09:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure check_domain [2024-11-03 04:09:36,351 INFO L138 BoogieDeclarations]: Found implementation of procedure check_domain [2024-11-03 04:09:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 04:09:36,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 04:09:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 04:09:36,446 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 04:09:36,449 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 04:09:36,750 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-11-03 04:09:36,750 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 04:09:36,763 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 04:09:36,764 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 04:09:36,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:36 BoogieIcfgContainer [2024-11-03 04:09:36,764 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 04:09:36,770 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 04:09:36,770 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 04:09:36,773 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 04:09:36,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:09:35" (1/3) ... [2024-11-03 04:09:36,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168eae4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:36, skipping insertion in model container [2024-11-03 04:09:36,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:36" (2/3) ... [2024-11-03 04:09:36,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168eae4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:36, skipping insertion in model container [2024-11-03 04:09:36,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:36" (3/3) ... [2024-11-03 04:09:36,777 INFO L112 eAbstractionObserver]: Analyzing ICFG color-magicseries1.c [2024-11-03 04:09:36,793 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 04:09:36,793 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 04:09:36,862 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 04:09:36,870 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;@31b2f54c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 04:09:36,870 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 04:09:36,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 32 states have internal predecessors, (45), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:36,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-03 04:09:36,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:36,884 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:36,884 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:36,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:36,890 INFO L85 PathProgramCache]: Analyzing trace with hash -173200605, now seen corresponding path program 1 times [2024-11-03 04:09:36,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:36,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814129944] [2024-11-03 04:09:36,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:36,900 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:36,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:36,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:36,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 04:09:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:37,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 04:09:37,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 04:09:37,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:37,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 04:09:37,153 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:37,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814129944] [2024-11-03 04:09:37,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1814129944] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 04:09:37,154 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 04:09:37,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2024-11-03 04:09:37,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503726221] [2024-11-03 04:09:37,164 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 04:09:37,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 04:09:37,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:37,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 04:09:37,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 04:09:37,199 INFO L87 Difference]: Start difference. First operand has 38 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 32 states have internal predecessors, (45), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 04:09:37,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:37,272 INFO L93 Difference]: Finished difference Result 73 states and 104 transitions. [2024-11-03 04:09:37,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 04:09:37,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-11-03 04:09:37,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:37,280 INFO L225 Difference]: With dead ends: 73 [2024-11-03 04:09:37,280 INFO L226 Difference]: Without dead ends: 38 [2024-11-03 04:09:37,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 04:09:37,285 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:37,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 269 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 04:09:37,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-03 04:09:37,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-03 04:09:37,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 04:09:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 53 transitions. [2024-11-03 04:09:37,322 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 53 transitions. Word has length 17 [2024-11-03 04:09:37,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:37,323 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 53 transitions. [2024-11-03 04:09:37,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 04:09:37,329 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 53 transitions. [2024-11-03 04:09:37,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-03 04:09:37,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:37,330 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:37,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 04:09:37,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:37,532 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:37,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:37,533 INFO L85 PathProgramCache]: Analyzing trace with hash -466603612, now seen corresponding path program 1 times [2024-11-03 04:09:37,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:37,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455875664] [2024-11-03 04:09:37,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:37,533 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:37,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:37,534 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:37,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 04:09:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:37,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 04:09:37,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 04:09:37,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 04:09:37,678 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:37,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455875664] [2024-11-03 04:09:37,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1455875664] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 04:09:37,678 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 04:09:37,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2024-11-03 04:09:37,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529715202] [2024-11-03 04:09:37,679 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 04:09:37,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 04:09:37,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:37,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 04:09:37,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-03 04:09:37,684 INFO L87 Difference]: Start difference. First operand 38 states and 53 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 04:09:37,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:37,721 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2024-11-03 04:09:37,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 04:09:37,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-03 04:09:37,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:37,723 INFO L225 Difference]: With dead ends: 42 [2024-11-03 04:09:37,723 INFO L226 Difference]: Without dead ends: 38 [2024-11-03 04:09:37,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-03 04:09:37,725 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:37,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 174 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 04:09:37,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-03 04:09:37,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-03 04:09:37,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 04:09:37,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2024-11-03 04:09:37,733 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 17 [2024-11-03 04:09:37,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:37,734 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2024-11-03 04:09:37,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 04:09:37,734 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2024-11-03 04:09:37,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-03 04:09:37,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:37,735 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 04:09:37,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-11-03 04:09:37,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:37,937 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:37,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:37,937 INFO L85 PathProgramCache]: Analyzing trace with hash -97449680, now seen corresponding path program 1 times [2024-11-03 04:09:37,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:37,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589819175] [2024-11-03 04:09:37,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:37,938 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:37,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:37,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:37,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 04:09:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:38,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 04:09:38,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:38,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 04:09:38,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:38,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 04:09:38,136 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:38,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589819175] [2024-11-03 04:09:38,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [589819175] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 04:09:38,136 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 04:09:38,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2024-11-03 04:09:38,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56817689] [2024-11-03 04:09:38,136 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 04:09:38,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 04:09:38,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:38,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 04:09:38,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-03 04:09:38,138 INFO L87 Difference]: Start difference. First operand 38 states and 51 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 04:09:38,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:38,202 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2024-11-03 04:09:38,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 04:09:38,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-03 04:09:38,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:38,204 INFO L225 Difference]: With dead ends: 70 [2024-11-03 04:09:38,204 INFO L226 Difference]: Without dead ends: 38 [2024-11-03 04:09:38,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-03 04:09:38,206 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:38,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 143 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 04:09:38,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-03 04:09:38,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2024-11-03 04:09:38,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:38,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2024-11-03 04:09:38,213 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 21 [2024-11-03 04:09:38,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:38,213 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2024-11-03 04:09:38,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 04:09:38,213 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2024-11-03 04:09:38,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-03 04:09:38,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:38,214 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1] [2024-11-03 04:09:38,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-03 04:09:38,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:38,418 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:38,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:38,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1645112148, now seen corresponding path program 1 times [2024-11-03 04:09:38,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:38,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4259806] [2024-11-03 04:09:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:38,419 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:38,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:38,421 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:38,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 04:09:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:38,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 04:09:38,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 04:09:38,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:38,605 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 04:09:38,606 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:38,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4259806] [2024-11-03 04:09:38,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [4259806] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 04:09:38,606 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 04:09:38,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 04:09:38,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433146839] [2024-11-03 04:09:38,609 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 04:09:38,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 04:09:38,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:38,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 04:09:38,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 04:09:38,611 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:38,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:38,650 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2024-11-03 04:09:38,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 04:09:38,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 39 [2024-11-03 04:09:38,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:38,652 INFO L225 Difference]: With dead ends: 51 [2024-11-03 04:09:38,652 INFO L226 Difference]: Without dead ends: 44 [2024-11-03 04:09:38,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 04:09:38,653 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:38,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 95 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 04:09:38,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-03 04:09:38,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-11-03 04:09:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 states have internal predecessors, (44), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:38,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2024-11-03 04:09:38,664 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 39 [2024-11-03 04:09:38,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:38,664 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2024-11-03 04:09:38,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:38,665 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2024-11-03 04:09:38,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-03 04:09:38,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:38,666 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1] [2024-11-03 04:09:38,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-03 04:09:38,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:38,867 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:38,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:38,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1930899933, now seen corresponding path program 1 times [2024-11-03 04:09:38,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:38,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805835590] [2024-11-03 04:09:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:38,868 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:38,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:38,870 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:38,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 04:09:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:38,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 04:09:38,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:38,986 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 04:09:38,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 04:09:39,009 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:39,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805835590] [2024-11-03 04:09:39,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1805835590] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 04:09:39,009 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 04:09:39,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 04:09:39,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688982121] [2024-11-03 04:09:39,010 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 04:09:39,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 04:09:39,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:39,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 04:09:39,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 04:09:39,011 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:39,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:39,033 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2024-11-03 04:09:39,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 04:09:39,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2024-11-03 04:09:39,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:39,035 INFO L225 Difference]: With dead ends: 48 [2024-11-03 04:09:39,036 INFO L226 Difference]: Without dead ends: 42 [2024-11-03 04:09:39,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 04:09:39,037 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:39,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 04:09:39,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-03 04:09:39,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-03 04:09:39,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:39,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2024-11-03 04:09:39,049 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 41 [2024-11-03 04:09:39,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:39,050 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2024-11-03 04:09:39,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:39,050 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2024-11-03 04:09:39,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-03 04:09:39,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:39,052 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-03 04:09:39,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-03 04:09:39,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:39,258 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:39,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:39,258 INFO L85 PathProgramCache]: Analyzing trace with hash 439812012, now seen corresponding path program 1 times [2024-11-03 04:09:39,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:39,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128103473] [2024-11-03 04:09:39,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:39,259 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:39,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:39,260 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:39,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-03 04:09:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:39,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 04:09:39,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:39,408 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-03 04:09:39,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:39,439 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-03 04:09:39,439 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:39,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128103473] [2024-11-03 04:09:39,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [128103473] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 04:09:39,440 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 04:09:39,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 04:09:39,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224381871] [2024-11-03 04:09:39,440 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 04:09:39,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 04:09:39,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:39,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 04:09:39,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 04:09:39,443 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:39,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:39,479 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2024-11-03 04:09:39,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 04:09:39,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2024-11-03 04:09:39,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:39,482 INFO L225 Difference]: With dead ends: 68 [2024-11-03 04:09:39,482 INFO L226 Difference]: Without dead ends: 50 [2024-11-03 04:09:39,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 04:09:39,483 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:39,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 04:09:39,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-03 04:09:39,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-03 04:09:39,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:39,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-11-03 04:09:39,492 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 49 [2024-11-03 04:09:39,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:39,493 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-11-03 04:09:39,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:39,493 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-11-03 04:09:39,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-03 04:09:39,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:39,494 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2024-11-03 04:09:39,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-03 04:09:39,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:39,695 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:39,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:39,696 INFO L85 PathProgramCache]: Analyzing trace with hash 49769900, now seen corresponding path program 1 times [2024-11-03 04:09:39,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:39,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641850740] [2024-11-03 04:09:39,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:39,696 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:39,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:39,699 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:39,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-03 04:09:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:39,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 04:09:39,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:39,880 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-03 04:09:39,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-03 04:09:39,947 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:39,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641850740] [2024-11-03 04:09:39,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1641850740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:39,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:39,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 04:09:39,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116426716] [2024-11-03 04:09:39,948 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:39,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 04:09:39,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:39,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 04:09:39,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 04:09:39,949 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:40,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:40,009 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2024-11-03 04:09:40,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 04:09:40,010 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2024-11-03 04:09:40,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:40,011 INFO L225 Difference]: With dead ends: 84 [2024-11-03 04:09:40,011 INFO L226 Difference]: Without dead ends: 62 [2024-11-03 04:09:40,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 04:09:40,012 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 15 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:40,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 180 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 04:09:40,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-03 04:09:40,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-03 04:09:40,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 56 states have internal predecessors, (68), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:40,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2024-11-03 04:09:40,023 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 61 [2024-11-03 04:09:40,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:40,025 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2024-11-03 04:09:40,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:40,026 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2024-11-03 04:09:40,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-03 04:09:40,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:40,030 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 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] [2024-11-03 04:09:40,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-03 04:09:40,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:40,231 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:40,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:40,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1455445076, now seen corresponding path program 2 times [2024-11-03 04:09:40,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:40,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428229687] [2024-11-03 04:09:40,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:40,232 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:40,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:40,235 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:40,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-03 04:09:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:40,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 04:09:40,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:40,486 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-03 04:09:40,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:40,615 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-03 04:09:40,615 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:40,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428229687] [2024-11-03 04:09:40,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [428229687] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:40,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:40,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 04:09:40,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799504523] [2024-11-03 04:09:40,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:40,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 04:09:40,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:40,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 04:09:40,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 04:09:40,617 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:40,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:40,697 INFO L93 Difference]: Finished difference Result 103 states and 128 transitions. [2024-11-03 04:09:40,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 04:09:40,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 73 [2024-11-03 04:09:40,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:40,699 INFO L225 Difference]: With dead ends: 103 [2024-11-03 04:09:40,699 INFO L226 Difference]: Without dead ends: 96 [2024-11-03 04:09:40,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 04:09:40,700 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 20 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:40,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 183 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 04:09:40,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-03 04:09:40,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-03 04:09:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 90 states have (on average 1.2444444444444445) internal successors, (112), 90 states have internal predecessors, (112), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:40,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 120 transitions. [2024-11-03 04:09:40,710 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 120 transitions. Word has length 73 [2024-11-03 04:09:40,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:40,710 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 120 transitions. [2024-11-03 04:09:40,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:40,710 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 120 transitions. [2024-11-03 04:09:40,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 04:09:40,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:40,711 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 4, 4, 4, 4, 4, 4, 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, 1] [2024-11-03 04:09:40,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-03 04:09:40,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:40,912 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:40,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:40,913 INFO L85 PathProgramCache]: Analyzing trace with hash -632814932, now seen corresponding path program 3 times [2024-11-03 04:09:40,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:40,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366314885] [2024-11-03 04:09:40,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:40,913 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:40,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:40,915 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:40,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-03 04:09:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:41,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-03 04:09:41,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:41,679 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 181 proven. 22 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-11-03 04:09:41,679 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:41,935 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 04:09:41,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2024-11-03 04:09:42,019 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 181 proven. 22 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-11-03 04:09:42,020 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:42,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366314885] [2024-11-03 04:09:42,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [366314885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:42,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:42,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-11-03 04:09:42,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132541208] [2024-11-03 04:09:42,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:42,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-03 04:09:42,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:42,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-03 04:09:42,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2024-11-03 04:09:42,023 INFO L87 Difference]: Start difference. First operand 96 states and 120 transitions. Second operand has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:43,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:43,000 INFO L93 Difference]: Finished difference Result 212 states and 268 transitions. [2024-11-03 04:09:43,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-03 04:09:43,001 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 107 [2024-11-03 04:09:43,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:43,003 INFO L225 Difference]: With dead ends: 212 [2024-11-03 04:09:43,003 INFO L226 Difference]: Without dead ends: 138 [2024-11-03 04:09:43,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2024-11-03 04:09:43,005 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 95 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:43,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 361 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 04:09:43,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-03 04:09:43,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 123. [2024-11-03 04:09:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 117 states have (on average 1.264957264957265) internal successors, (148), 117 states have internal predecessors, (148), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:43,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 156 transitions. [2024-11-03 04:09:43,023 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 156 transitions. Word has length 107 [2024-11-03 04:09:43,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:43,024 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 156 transitions. [2024-11-03 04:09:43,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:43,024 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 156 transitions. [2024-11-03 04:09:43,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 04:09:43,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:43,025 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2024-11-03 04:09:43,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-11-03 04:09:43,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:43,226 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:43,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:43,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1751109806, now seen corresponding path program 1 times [2024-11-03 04:09:43,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:43,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827202615] [2024-11-03 04:09:43,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:43,227 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:43,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:43,229 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:43,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-03 04:09:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:43,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-03 04:09:43,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:44,022 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 245 proven. 103 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-03 04:09:44,022 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:44,390 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 04:09:44,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 23 [2024-11-03 04:09:44,518 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 247 proven. 95 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-03 04:09:44,519 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:44,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827202615] [2024-11-03 04:09:44,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [827202615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:44,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:44,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2024-11-03 04:09:44,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426954762] [2024-11-03 04:09:44,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:44,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-03 04:09:44,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:44,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-03 04:09:44,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2024-11-03 04:09:44,521 INFO L87 Difference]: Start difference. First operand 123 states and 156 transitions. Second operand has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:45,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:45,593 INFO L93 Difference]: Finished difference Result 271 states and 348 transitions. [2024-11-03 04:09:45,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-03 04:09:45,594 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 107 [2024-11-03 04:09:45,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:45,596 INFO L225 Difference]: With dead ends: 271 [2024-11-03 04:09:45,596 INFO L226 Difference]: Without dead ends: 210 [2024-11-03 04:09:45,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=333, Invalid=1389, Unknown=0, NotChecked=0, Total=1722 [2024-11-03 04:09:45,598 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 245 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:45,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 560 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 04:09:45,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-03 04:09:45,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 184. [2024-11-03 04:09:45,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 178 states have (on average 1.2865168539325842) internal successors, (229), 178 states have internal predecessors, (229), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:45,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 237 transitions. [2024-11-03 04:09:45,640 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 237 transitions. Word has length 107 [2024-11-03 04:09:45,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:45,641 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 237 transitions. [2024-11-03 04:09:45,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:45,641 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 237 transitions. [2024-11-03 04:09:45,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 04:09:45,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:45,643 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 11, 5, 4, 4, 4, 4, 4, 4, 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, 1] [2024-11-03 04:09:45,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2024-11-03 04:09:45,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:45,843 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:45,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:45,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1401516590, now seen corresponding path program 2 times [2024-11-03 04:09:45,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:45,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122150432] [2024-11-03 04:09:45,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:45,844 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:45,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:45,847 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:45,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-03 04:09:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:46,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-03 04:09:46,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 187 proven. 224 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-03 04:09:46,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:46,992 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 04:09:46,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 23 [2024-11-03 04:09:47,170 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 188 proven. 222 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-03 04:09:47,170 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:47,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122150432] [2024-11-03 04:09:47,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2122150432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:47,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:47,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2024-11-03 04:09:47,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093701867] [2024-11-03 04:09:47,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:47,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-03 04:09:47,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:47,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-03 04:09:47,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=807, Unknown=0, NotChecked=0, Total=930 [2024-11-03 04:09:47,173 INFO L87 Difference]: Start difference. First operand 184 states and 237 transitions. Second operand has 31 states, 31 states have (on average 3.6129032258064515) internal successors, (112), 31 states have internal predecessors, (112), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:48,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:48,177 INFO L93 Difference]: Finished difference Result 393 states and 510 transitions. [2024-11-03 04:09:48,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-03 04:09:48,178 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.6129032258064515) internal successors, (112), 31 states have internal predecessors, (112), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 107 [2024-11-03 04:09:48,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:48,180 INFO L225 Difference]: With dead ends: 393 [2024-11-03 04:09:48,180 INFO L226 Difference]: Without dead ends: 349 [2024-11-03 04:09:48,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=338, Invalid=1642, Unknown=0, NotChecked=0, Total=1980 [2024-11-03 04:09:48,181 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 247 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:48,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 622 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-03 04:09:48,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-11-03 04:09:48,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 321. [2024-11-03 04:09:48,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 315 states have (on average 1.3047619047619048) internal successors, (411), 315 states have internal predecessors, (411), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:48,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 419 transitions. [2024-11-03 04:09:48,207 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 419 transitions. Word has length 107 [2024-11-03 04:09:48,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:48,208 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 419 transitions. [2024-11-03 04:09:48,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.6129032258064515) internal successors, (112), 31 states have internal predecessors, (112), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:48,208 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 419 transitions. [2024-11-03 04:09:48,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 04:09:48,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:48,209 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 9, 7, 4, 4, 4, 4, 4, 4, 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, 1] [2024-11-03 04:09:48,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2024-11-03 04:09:48,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:48,410 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:48,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:48,410 INFO L85 PathProgramCache]: Analyzing trace with hash -887971666, now seen corresponding path program 3 times [2024-11-03 04:09:48,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:48,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651340607] [2024-11-03 04:09:48,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:48,411 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:48,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:48,412 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:48,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-03 04:09:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:48,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-03 04:09:48,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:49,086 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 7 proven. 407 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-03 04:09:49,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:49,583 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 04:09:49,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 23 [2024-11-03 04:09:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 7 proven. 407 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-03 04:09:49,782 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:49,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651340607] [2024-11-03 04:09:49,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1651340607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:49,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:49,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2024-11-03 04:09:49,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64030694] [2024-11-03 04:09:49,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:49,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-03 04:09:49,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:49,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-03 04:09:49,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=998, Unknown=0, NotChecked=0, Total=1122 [2024-11-03 04:09:49,784 INFO L87 Difference]: Start difference. First operand 321 states and 419 transitions. Second operand has 34 states, 34 states have (on average 3.588235294117647) internal successors, (122), 34 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:51,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:51,083 INFO L93 Difference]: Finished difference Result 698 states and 915 transitions. [2024-11-03 04:09:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-03 04:09:51,083 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.588235294117647) internal successors, (122), 34 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 107 [2024-11-03 04:09:51,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:51,086 INFO L225 Difference]: With dead ends: 698 [2024-11-03 04:09:51,086 INFO L226 Difference]: Without dead ends: 656 [2024-11-03 04:09:51,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=356, Invalid=2094, Unknown=0, NotChecked=0, Total=2450 [2024-11-03 04:09:51,088 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 154 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:51,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 938 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-03 04:09:51,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2024-11-03 04:09:51,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 617. [2024-11-03 04:09:51,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 611 states have (on average 1.320785597381342) internal successors, (807), 611 states have internal predecessors, (807), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:51,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 815 transitions. [2024-11-03 04:09:51,125 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 815 transitions. Word has length 107 [2024-11-03 04:09:51,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:51,126 INFO L471 AbstractCegarLoop]: Abstraction has 617 states and 815 transitions. [2024-11-03 04:09:51,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.588235294117647) internal successors, (122), 34 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:51,126 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 815 transitions. [2024-11-03 04:09:51,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 04:09:51,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:51,128 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 13, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-11-03 04:09:51,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-11-03 04:09:51,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:51,329 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:51,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:51,329 INFO L85 PathProgramCache]: Analyzing trace with hash 329032238, now seen corresponding path program 4 times [2024-11-03 04:09:51,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:51,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482872433] [2024-11-03 04:09:51,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:51,329 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:51,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:51,331 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:51,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2024-11-03 04:09:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:51,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-03 04:09:51,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 164 proven. 235 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-03 04:09:51,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:52,067 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 04:09:52,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 20 [2024-11-03 04:09:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 164 proven. 233 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-03 04:09:52,263 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:52,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482872433] [2024-11-03 04:09:52,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1482872433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:52,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:52,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2024-11-03 04:09:52,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780113513] [2024-11-03 04:09:52,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:52,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-03 04:09:52,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:52,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-03 04:09:52,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2024-11-03 04:09:52,266 INFO L87 Difference]: Start difference. First operand 617 states and 815 transitions. Second operand has 28 states, 28 states have (on average 3.607142857142857) internal successors, (101), 28 states have internal predecessors, (101), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:52,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:52,785 INFO L93 Difference]: Finished difference Result 1181 states and 1565 transitions. [2024-11-03 04:09:52,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-03 04:09:52,786 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.607142857142857) internal successors, (101), 28 states have internal predecessors, (101), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 107 [2024-11-03 04:09:52,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:52,790 INFO L225 Difference]: With dead ends: 1181 [2024-11-03 04:09:52,790 INFO L226 Difference]: Without dead ends: 1119 [2024-11-03 04:09:52,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2024-11-03 04:09:52,794 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 54 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:52,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 651 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 04:09:52,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2024-11-03 04:09:52,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1055. [2024-11-03 04:09:52,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1049 states have (on average 1.332697807435653) internal successors, (1398), 1049 states have internal predecessors, (1398), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:52,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1406 transitions. [2024-11-03 04:09:52,891 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1406 transitions. Word has length 107 [2024-11-03 04:09:52,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:52,892 INFO L471 AbstractCegarLoop]: Abstraction has 1055 states and 1406 transitions. [2024-11-03 04:09:52,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.607142857142857) internal successors, (101), 28 states have internal predecessors, (101), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:52,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1406 transitions. [2024-11-03 04:09:52,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 04:09:52,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:52,895 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 10, 6, 4, 4, 4, 4, 4, 4, 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, 1] [2024-11-03 04:09:52,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2024-11-03 04:09:53,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:53,096 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:53,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:53,097 INFO L85 PathProgramCache]: Analyzing trace with hash -942364564, now seen corresponding path program 5 times [2024-11-03 04:09:53,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:53,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081553264] [2024-11-03 04:09:53,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:53,097 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:53,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:53,098 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:53,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-03 04:09:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:53,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-03 04:09:53,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:53,545 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 244 proven. 101 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-03 04:09:53,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:53,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 04:09:53,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 20 [2024-11-03 04:09:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 244 proven. 99 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-03 04:09:53,795 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:53,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081553264] [2024-11-03 04:09:53,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1081553264] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:53,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:53,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2024-11-03 04:09:53,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901426066] [2024-11-03 04:09:53,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:53,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-03 04:09:53,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:53,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-03 04:09:53,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-03 04:09:53,797 INFO L87 Difference]: Start difference. First operand 1055 states and 1406 transitions. Second operand has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:54,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:54,183 INFO L93 Difference]: Finished difference Result 1541 states and 2037 transitions. [2024-11-03 04:09:54,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-03 04:09:54,184 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 107 [2024-11-03 04:09:54,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:54,189 INFO L225 Difference]: With dead ends: 1541 [2024-11-03 04:09:54,189 INFO L226 Difference]: Without dead ends: 1371 [2024-11-03 04:09:54,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2024-11-03 04:09:54,191 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 43 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:54,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 453 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 04:09:54,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2024-11-03 04:09:54,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1279. [2024-11-03 04:09:54,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 1273 states have (on average 1.3228593872741556) internal successors, (1684), 1273 states have internal predecessors, (1684), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:54,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1692 transitions. [2024-11-03 04:09:54,275 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1692 transitions. Word has length 107 [2024-11-03 04:09:54,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:54,275 INFO L471 AbstractCegarLoop]: Abstraction has 1279 states and 1692 transitions. [2024-11-03 04:09:54,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:54,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1692 transitions. [2024-11-03 04:09:54,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 04:09:54,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:54,278 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 10, 6, 4, 4, 4, 4, 4, 4, 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, 1] [2024-11-03 04:09:54,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2024-11-03 04:09:54,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:54,479 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:54,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:54,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1402366768, now seen corresponding path program 6 times [2024-11-03 04:09:54,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:54,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301907719] [2024-11-03 04:09:54,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:54,480 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:54,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:54,483 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:09:54,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-03 04:09:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:54,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-03 04:09:54,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:55,079 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 255 proven. 108 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-03 04:09:55,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:09:55,491 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 04:09:55,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 67 [2024-11-03 04:09:55,796 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 279 proven. 84 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-03 04:09:55,796 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:09:55,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301907719] [2024-11-03 04:09:55,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [301907719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:09:55,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:09:55,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2024-11-03 04:09:55,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618660535] [2024-11-03 04:09:55,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:09:55,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-03 04:09:55,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:09:55,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-03 04:09:55,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2024-11-03 04:09:55,798 INFO L87 Difference]: Start difference. First operand 1279 states and 1692 transitions. Second operand has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 28 states have internal predecessors, (88), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:58,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:09:58,513 INFO L93 Difference]: Finished difference Result 3025 states and 3982 transitions. [2024-11-03 04:09:58,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-03 04:09:58,514 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 28 states have internal predecessors, (88), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 107 [2024-11-03 04:09:58,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:09:58,524 INFO L225 Difference]: With dead ends: 3025 [2024-11-03 04:09:58,524 INFO L226 Difference]: Without dead ends: 2373 [2024-11-03 04:09:58,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1450 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=710, Invalid=4260, Unknown=0, NotChecked=0, Total=4970 [2024-11-03 04:09:58,529 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 165 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-03 04:09:58,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 541 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-03 04:09:58,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2024-11-03 04:09:58,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2127. [2024-11-03 04:09:58,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 2121 states have (on average 1.3177746346063177) internal successors, (2795), 2121 states have internal predecessors, (2795), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:09:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 2803 transitions. [2024-11-03 04:09:58,792 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 2803 transitions. Word has length 107 [2024-11-03 04:09:58,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:09:58,793 INFO L471 AbstractCegarLoop]: Abstraction has 2127 states and 2803 transitions. [2024-11-03 04:09:58,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 28 states have internal predecessors, (88), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:09:58,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 2803 transitions. [2024-11-03 04:09:58,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 04:09:58,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:09:58,798 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 11, 5, 4, 4, 4, 4, 4, 4, 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, 1] [2024-11-03 04:09:58,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2024-11-03 04:09:58,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:58,999 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:09:58,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:09:58,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1007999982, now seen corresponding path program 7 times [2024-11-03 04:09:58,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:09:58,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707528934] [2024-11-03 04:09:59,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:09:59,000 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:09:59,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:09:59,001 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) [2024-11-03 04:09:59,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-03 04:09:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 04:09:59,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-03 04:09:59,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 04:09:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 187 proven. 223 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-03 04:09:59,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 04:10:00,767 INFO L349 Elim1Store]: treesize reduction 32, result has 37.3 percent of original size [2024-11-03 04:10:00,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 45 [2024-11-03 04:10:01,199 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 188 proven. 219 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-03 04:10:01,200 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 04:10:01,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707528934] [2024-11-03 04:10:01,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1707528934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 04:10:01,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 04:10:01,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 38 [2024-11-03 04:10:01,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850635681] [2024-11-03 04:10:01,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 04:10:01,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-03 04:10:01,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 04:10:01,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-03 04:10:01,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2024-11-03 04:10:01,204 INFO L87 Difference]: Start difference. First operand 2127 states and 2803 transitions. Second operand has 38 states, 38 states have (on average 2.8684210526315788) internal successors, (109), 38 states have internal predecessors, (109), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:10:06,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 04:10:06,548 INFO L93 Difference]: Finished difference Result 2902 states and 3809 transitions. [2024-11-03 04:10:06,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-03 04:10:06,549 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.8684210526315788) internal successors, (109), 38 states have internal predecessors, (109), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 107 [2024-11-03 04:10:06,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 04:10:06,558 INFO L225 Difference]: With dead ends: 2902 [2024-11-03 04:10:06,558 INFO L226 Difference]: Without dead ends: 2705 [2024-11-03 04:10:06,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3325 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1401, Invalid=8901, Unknown=0, NotChecked=0, Total=10302 [2024-11-03 04:10:06,562 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 290 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-03 04:10:06,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 703 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-03 04:10:06,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2024-11-03 04:10:06,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2436. [2024-11-03 04:10:06,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2436 states, 2430 states have (on average 1.316872427983539) internal successors, (3200), 2430 states have internal predecessors, (3200), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 04:10:06,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 3208 transitions. [2024-11-03 04:10:06,932 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 3208 transitions. Word has length 107 [2024-11-03 04:10:06,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 04:10:06,932 INFO L471 AbstractCegarLoop]: Abstraction has 2436 states and 3208 transitions. [2024-11-03 04:10:06,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.8684210526315788) internal successors, (109), 38 states have internal predecessors, (109), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 04:10:06,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 3208 transitions. [2024-11-03 04:10:06,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 04:10:06,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 04:10:06,938 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 12, 4, 4, 4, 4, 4, 4, 4, 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, 1] [2024-11-03 04:10:06,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2024-11-03 04:10:07,139 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 [2024-11-03 04:10:07,139 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 04:10:07,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 04:10:07,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1030632236, now seen corresponding path program 8 times [2024-11-03 04:10:07,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 04:10:07,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899727489] [2024-11-03 04:10:07,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 04:10:07,140 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 04:10:07,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 04:10:07,141 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 04:10:07,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-11-03 04:10:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 04:10:07,358 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-03 04:10:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-03 04:10:07,637 INFO L130 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2024-11-03 04:10:07,637 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-03 04:10:07,638 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 04:10:07,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2024-11-03 04:10:07,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 04:10:07,843 INFO L407 BasicCegarLoop]: Path program histogram: [8, 3, 1, 1, 1, 1, 1, 1] [2024-11-03 04:10:07,893 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 04:10:07,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:10:07 BoogieIcfgContainer [2024-11-03 04:10:07,896 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 04:10:07,896 INFO L158 Benchmark]: Toolchain (without parser) took 31977.70ms. Allocated memory was 321.9MB in the beginning and 464.5MB in the end (delta: 142.6MB). Free memory was 264.2MB in the beginning and 182.3MB in the end (delta: 81.9MB). Peak memory consumption was 225.9MB. Max. memory is 8.0GB. [2024-11-03 04:10:07,896 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 188.7MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 04:10:07,896 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.50ms. Allocated memory is still 321.9MB. Free memory was 263.9MB in the beginning and 250.6MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2024-11-03 04:10:07,897 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.68ms. Allocated memory is still 321.9MB. Free memory was 250.6MB in the beginning and 248.8MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2024-11-03 04:10:07,897 INFO L158 Benchmark]: Boogie Preprocessor took 64.20ms. Allocated memory is still 321.9MB. Free memory was 248.8MB in the beginning and 246.4MB in the end (delta: 2.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-11-03 04:10:07,897 INFO L158 Benchmark]: RCFGBuilder took 467.56ms. Allocated memory is still 321.9MB. Free memory was 246.4MB in the beginning and 288.7MB in the end (delta: -42.2MB). Peak memory consumption was 22.6MB. Max. memory is 8.0GB. [2024-11-03 04:10:07,897 INFO L158 Benchmark]: TraceAbstraction took 31126.10ms. Allocated memory was 321.9MB in the beginning and 464.5MB in the end (delta: 142.6MB). Free memory was 287.6MB in the beginning and 182.3MB in the end (delta: 105.3MB). Peak memory consumption was 247.4MB. Max. memory is 8.0GB. [2024-11-03 04:10:07,899 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 188.7MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 267.50ms. Allocated memory is still 321.9MB. Free memory was 263.9MB in the beginning and 250.6MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.68ms. Allocated memory is still 321.9MB. Free memory was 250.6MB in the beginning and 248.8MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 64.20ms. Allocated memory is still 321.9MB. Free memory was 248.8MB in the beginning and 246.4MB in the end (delta: 2.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 467.56ms. Allocated memory is still 321.9MB. Free memory was 246.4MB in the beginning and 288.7MB in the end (delta: -42.2MB). Peak memory consumption was 22.6MB. Max. memory is 8.0GB. * TraceAbstraction took 31126.10ms. Allocated memory was 321.9MB in the beginning and 464.5MB in the end (delta: 142.6MB). Free memory was 287.6MB in the beginning and 182.3MB in the end (delta: 105.3MB). Peak memory consumption was 247.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 20]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L56] int x, y, z, w; [L57] x = __VERIFIER_nondet_int() [L58] y = __VERIFIER_nondet_int() [L59] z = __VERIFIER_nondet_int() [L60] w = __VERIFIER_nondet_int() [L61] CALL, EXPR solve(x, y, z, w) [L44] CALL, EXPR check_domain(s0) VAL [\old(x)=2] [L28] COND TRUE x >= 0 && x <= 4 [L28] return 1; VAL [\old(x)=2, \result=1] [L44] RET, EXPR check_domain(s0) VAL [s0=2, s1=0, s2=2, s3=0] [L44] EXPR check_domain(s0) && check_domain(s1) VAL [s0=2, s1=0, s2=2, s3=0] [L44] CALL, EXPR check_domain(s1) VAL [\old(x)=0] [L28] COND TRUE x >= 0 && x <= 4 [L28] return 1; VAL [\old(x)=0, \result=1] [L44] RET, EXPR check_domain(s1) VAL [s0=2, s1=0, s2=2, s3=0] [L44] EXPR check_domain(s0) && check_domain(s1) VAL [s0=2, s1=0, s2=2, s3=0] [L44] EXPR check_domain(s0) && check_domain(s1) && check_domain(s2) VAL [s0=2, s1=0, s2=2, s3=0] [L44] CALL, EXPR check_domain(s2) VAL [\old(x)=2] [L28] COND TRUE x >= 0 && x <= 4 [L28] return 1; VAL [\old(x)=2, \result=1] [L44] RET, EXPR check_domain(s2) VAL [s0=2, s1=0, s2=2, s3=0] [L44] EXPR check_domain(s0) && check_domain(s1) && check_domain(s2) VAL [s0=2, s1=0, s2=2, s3=0] [L44-L45] check_domain(s0) && check_domain(s1) && check_domain(s2) && check_domain(s3) VAL [s0=2, s1=0, s2=2, s3=0] [L45] CALL, EXPR check_domain(s3) VAL [\old(x)=0] [L28] COND TRUE x >= 0 && x <= 4 [L28] return 1; VAL [\old(x)=0, \result=1] [L45] RET, EXPR check_domain(s3) VAL [s0=2, s1=0, s2=2, s3=0] [L44-L45] check_domain(s0) && check_domain(s1) && check_domain(s2) && check_domain(s3) VAL [s0=2, s1=0, s2=2, s3=0] [L44-L45] COND TRUE check_domain(s0) && check_domain(s1) && check_domain(s2) && check_domain(s3) [L46] CALL check_sum(s0, s1, s2, s3) [L33] int s[4] = {s0, s1, s2, s3}; [L33] int s[4] = {s0, s1, s2, s3}; [L33] int s[4] = {s0, s1, s2, s3}; [L33] int s[4] = {s0, s1, s2, s3}; [L33] int s[4] = {s0, s1, s2, s3}; [L34] int i = 0; VAL [i=0, s={7:0}] [L34] COND TRUE i < 4 [L35] int sum = 0; [L36] int j = 0; VAL [i=0, j=0, s={7:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=0, j=1, s={7:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND TRUE s[j] == i [L37] sum++ VAL [i=0, j=1, s={7:0}, sum=1] [L36] j++ VAL [i=0, j=2, s={7:0}, sum=1] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=0, j=3, s={7:0}, sum=1] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND TRUE s[j] == i [L37] sum++ VAL [i=0, j=3, s={7:0}, sum=2] [L36] j++ VAL [i=0, j=4, s={7:0}, sum=2] [L36] COND FALSE !(j < 4) VAL [i=0, s={7:0}, sum=2] [L38] EXPR s[i] [L38] COND FALSE !(sum != s[i]) [L34] i++ VAL [i=1, s={7:0}] [L34] COND TRUE i < 4 [L35] int sum = 0; [L36] int j = 0; VAL [i=1, j=0, s={7:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=1, j=1, s={7:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=1, j=2, s={7:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=1, j=3, s={7:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=1, j=4, s={7:0}, sum=0] [L36] COND FALSE !(j < 4) VAL [i=1, s={7:0}, sum=0] [L38] EXPR s[i] [L38] COND FALSE !(sum != s[i]) [L34] i++ VAL [i=2, s={7:0}] [L34] COND TRUE i < 4 [L35] int sum = 0; [L36] int j = 0; VAL [i=2, j=0, s={7:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND TRUE s[j] == i [L37] sum++ VAL [i=2, j=0, s={7:0}, sum=1] [L36] j++ VAL [i=2, j=1, s={7:0}, sum=1] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=2, j=2, s={7:0}, sum=1] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND TRUE s[j] == i [L37] sum++ VAL [i=2, j=2, s={7:0}, sum=2] [L36] j++ VAL [i=2, j=3, s={7:0}, sum=2] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=2, j=4, s={7:0}, sum=2] [L36] COND FALSE !(j < 4) VAL [i=2, s={7:0}, sum=2] [L38] EXPR s[i] [L38] COND FALSE !(sum != s[i]) [L34] i++ VAL [i=3, s={7:0}] [L34] COND TRUE i < 4 [L35] int sum = 0; [L36] int j = 0; VAL [i=3, j=0, s={7:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=3, j=1, s={7:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=3, j=2, s={7:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=3, j=3, s={7:0}, sum=0] [L36] COND TRUE j < 4 [L37] EXPR s[j] [L37] COND FALSE !(s[j] == i) [L36] j++ VAL [i=3, j=4, s={7:0}, sum=0] [L36] COND FALSE !(j < 4) VAL [i=3, s={7:0}, sum=0] [L38] EXPR s[i] [L38] COND FALSE !(sum != s[i]) [L34] i++ VAL [i=4, s={7:0}] [L34] COND FALSE !(i < 4) VAL [s={7:0}] [L40] return 1; [L33] int s[4] = {s0, s1, s2, s3}; [L40] return 1; VAL [\result=1] [L46] RET check_sum(s0, s1, s2, s3) [L46] COND TRUE check_sum(s0, s1, s2, s3) [L47] return 1; VAL [\result=1] [L61] RET, EXPR solve(x, y, z, w) [L61] CALL __VERIFIER_assert(!solve(x, y, z, w)) [L18] COND TRUE !(cond) [L20] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 31.0s, OverallIterations: 17, TraceHistogramMax: 16, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 13.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1352 SdHoareTripleChecker+Valid, 5.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1352 mSDsluCounter, 6089 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5406 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7585 IncrementalHoareTripleChecker+Invalid, 7636 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 683 mSDtfsCounter, 7585 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2483 GetRequests, 2072 SyntacticMatches, 0 SemanticMatches, 411 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6910 ImplicationChecksByTransitivity, 12.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2436occurred in iteration=16, InterpolantAutomatonStates: 326, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 16 MinimizatonAttempts, 785 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 1281 NumberOfCodeBlocks, 1281 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2316 ConstructedInterpolants, 0 QuantifiedInterpolants, 12354 SizeOfPredicates, 60 NumberOfNonLiveVariables, 2431 ConjunctsInSsa, 196 ConjunctsInUnsatCore, 32 InterpolantComputations, 12 PerfectInterpolantSequences, 5306/8246 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-03 04:10:07,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...