/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-patterns/array7_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 07:08:53,686 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 07:08:53,769 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 07:08:53,774 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 07:08:53,774 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 07:08:53,795 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 07:08:53,796 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 07:08:53,796 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 07:08:53,796 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 07:08:53,797 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 07:08:53,797 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 07:08:53,797 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 07:08:53,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 07:08:53,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 07:08:53,798 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 07:08:53,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 07:08:53,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 07:08:53,799 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 07:08:53,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 07:08:53,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 07:08:53,799 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 07:08:53,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 07:08:53,802 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 07:08:53,803 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 07:08:53,805 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 07:08:53,805 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 07:08:53,806 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 07:08:53,806 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 07:08:53,806 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 07:08:53,807 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 07:08:53,807 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 07:08:53,807 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 07:08:53,808 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 07:08:53,808 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 07:08:53,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 07:08:53,808 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 07:08:53,808 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 07:08:53,808 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 07:08:53,808 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 07:08:53,809 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 07:08:53,809 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 07:08:53,809 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 07:08:53,809 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 07:08:53,809 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 07:08:53,809 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 07:08:53,809 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 07:08:53,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 07:08:53,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 07:08:54,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 07:08:54,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 07:08:54,003 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 07:08:54,005 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 07:08:54,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array7_pattern.c [2023-12-16 07:08:55,026 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 07:08:55,173 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 07:08:55,174 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array7_pattern.c [2023-12-16 07:08:55,180 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12c5699d1/c048e650d8df4dea8db0e9010d6b0c66/FLAGc96ad524a [2023-12-16 07:08:55,193 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12c5699d1/c048e650d8df4dea8db0e9010d6b0c66 [2023-12-16 07:08:55,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 07:08:55,196 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 07:08:55,198 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 07:08:55,198 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 07:08:55,202 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 07:08:55,202 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:08:55" (1/1) ... [2023-12-16 07:08:55,203 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24bdee7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:08:55, skipping insertion in model container [2023-12-16 07:08:55,203 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:08:55" (1/1) ... [2023-12-16 07:08:55,220 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 07:08:55,342 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array7_pattern.c[1375,1388] [2023-12-16 07:08:55,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 07:08:55,384 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 07:08:55,395 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array7_pattern.c[1375,1388] [2023-12-16 07:08:55,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 07:08:55,449 INFO L206 MainTranslator]: Completed translation [2023-12-16 07:08:55,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:08:55 WrapperNode [2023-12-16 07:08:55,450 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 07:08:55,451 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 07:08:55,451 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 07:08:55,451 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 07:08:55,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:08:55" (1/1) ... [2023-12-16 07:08:55,479 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:08:55" (1/1) ... [2023-12-16 07:08:55,515 INFO L138 Inliner]: procedures = 18, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2023-12-16 07:08:55,515 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 07:08:55,516 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 07:08:55,516 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 07:08:55,516 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 07:08:55,526 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:08:55" (1/1) ... [2023-12-16 07:08:55,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:08:55" (1/1) ... [2023-12-16 07:08:55,533 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:08:55" (1/1) ... [2023-12-16 07:08:55,559 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2023-12-16 07:08:55,559 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:08:55" (1/1) ... [2023-12-16 07:08:55,560 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:08:55" (1/1) ... [2023-12-16 07:08:55,583 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:08:55" (1/1) ... [2023-12-16 07:08:55,586 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:08:55" (1/1) ... [2023-12-16 07:08:55,587 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:08:55" (1/1) ... [2023-12-16 07:08:55,587 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:08:55" (1/1) ... [2023-12-16 07:08:55,589 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 07:08:55,590 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 07:08:55,590 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 07:08:55,590 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 07:08:55,590 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:08:55" (1/1) ... [2023-12-16 07:08:55,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 07:08:55,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 07:08:55,629 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) [2023-12-16 07:08:55,640 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 [2023-12-16 07:08:55,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 07:08:55,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 07:08:55,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 07:08:55,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 07:08:55,651 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 07:08:55,651 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 07:08:55,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 07:08:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 07:08:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 07:08:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-16 07:08:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 07:08:55,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 07:08:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 07:08:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 07:08:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 07:08:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-16 07:08:55,716 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 07:08:55,717 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 07:08:56,021 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 07:08:56,049 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 07:08:56,049 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-16 07:08:56,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:08:56 BoogieIcfgContainer [2023-12-16 07:08:56,050 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 07:08:56,051 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 07:08:56,051 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 07:08:56,059 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 07:08:56,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:08:55" (1/3) ... [2023-12-16 07:08:56,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15619986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:08:56, skipping insertion in model container [2023-12-16 07:08:56,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:08:55" (2/3) ... [2023-12-16 07:08:56,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15619986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:08:56, skipping insertion in model container [2023-12-16 07:08:56,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:08:56" (3/3) ... [2023-12-16 07:08:56,061 INFO L112 eAbstractionObserver]: Analyzing ICFG array7_pattern.c [2023-12-16 07:08:56,073 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 07:08:56,073 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 07:08:56,106 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 07:08:56,111 INFO L357 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, mHoare=true, 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;@13e7c5a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 07:08:56,111 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 07:08:56,114 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:08:56,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 07:08:56,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:08:56,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:08:56,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:08:56,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:08:56,123 INFO L85 PathProgramCache]: Analyzing trace with hash -7457711, now seen corresponding path program 1 times [2023-12-16 07:08:56,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:08:56,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763473026] [2023-12-16 07:08:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:08:56,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:08:56,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:08:56,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:08:56,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 07:08:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:08:56,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 07:08:56,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:08:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 07:08:56,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:08:56,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:08:56,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763473026] [2023-12-16 07:08:56,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763473026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:08:56,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:08:56,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 07:08:56,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070437045] [2023-12-16 07:08:56,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:08:56,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 07:08:56,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:08:56,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 07:08:56,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 07:08:56,248 INFO L87 Difference]: Start difference. First operand has 21 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2023-12-16 07:08:56,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:08:56,289 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2023-12-16 07:08:56,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 07:08:56,291 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 14 [2023-12-16 07:08:56,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:08:56,295 INFO L225 Difference]: With dead ends: 40 [2023-12-16 07:08:56,295 INFO L226 Difference]: Without dead ends: 19 [2023-12-16 07:08:56,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 07:08:56,299 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:08:56,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:08:56,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-16 07:08:56,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-16 07:08:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:08:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-12-16 07:08:56,322 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 14 [2023-12-16 07:08:56,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:08:56,323 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-12-16 07:08:56,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2023-12-16 07:08:56,324 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-12-16 07:08:56,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-16 07:08:56,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:08:56,326 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:08:56,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 07:08:56,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:08:56,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:08:56,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:08:56,530 INFO L85 PathProgramCache]: Analyzing trace with hash -856934570, now seen corresponding path program 1 times [2023-12-16 07:08:56,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:08:56,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591504152] [2023-12-16 07:08:56,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:08:56,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:08:56,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:08:56,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:08:56,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 07:08:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:08:56,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 07:08:56,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:08:56,678 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:08:56,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:08:56,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:08:56,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591504152] [2023-12-16 07:08:56,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591504152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:08:56,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:08:56,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 07:08:56,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132881328] [2023-12-16 07:08:56,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:08:56,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 07:08:56,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:08:56,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 07:08:56,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:08:56,681 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 07:08:56,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:08:56,732 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2023-12-16 07:08:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 07:08:56,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-12-16 07:08:56,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:08:56,733 INFO L225 Difference]: With dead ends: 24 [2023-12-16 07:08:56,733 INFO L226 Difference]: Without dead ends: 20 [2023-12-16 07:08:56,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 07:08:56,734 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:08:56,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 47 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:08:56,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-16 07:08:56,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-16 07:08:56,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:08:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-12-16 07:08:56,739 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 26 [2023-12-16 07:08:56,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:08:56,740 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-12-16 07:08:56,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 07:08:56,740 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-12-16 07:08:56,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-16 07:08:56,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:08:56,741 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:08:56,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 07:08:56,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:08:56,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:08:56,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:08:56,945 INFO L85 PathProgramCache]: Analyzing trace with hash -765856431, now seen corresponding path program 1 times [2023-12-16 07:08:56,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:08:56,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720128242] [2023-12-16 07:08:56,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:08:56,945 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:08:56,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:08:56,947 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:08:56,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 07:08:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:08:57,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 07:08:57,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:08:57,196 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 07:08:57,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:08:57,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:08:57,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720128242] [2023-12-16 07:08:57,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720128242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:08:57,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:08:57,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 07:08:57,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914225613] [2023-12-16 07:08:57,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:08:57,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 07:08:57,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:08:57,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 07:08:57,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-16 07:08:57,204 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 07:08:57,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:08:57,390 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2023-12-16 07:08:57,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 07:08:57,391 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2023-12-16 07:08:57,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:08:57,391 INFO L225 Difference]: With dead ends: 41 [2023-12-16 07:08:57,392 INFO L226 Difference]: Without dead ends: 25 [2023-12-16 07:08:57,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-16 07:08:57,393 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:08:57,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 42 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:08:57,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-16 07:08:57,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-16 07:08:57,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:08:57,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2023-12-16 07:08:57,398 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 27 [2023-12-16 07:08:57,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:08:57,398 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2023-12-16 07:08:57,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 07:08:57,398 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2023-12-16 07:08:57,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 07:08:57,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:08:57,399 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:08:57,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-16 07:08:57,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:08:57,604 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:08:57,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:08:57,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1693469014, now seen corresponding path program 1 times [2023-12-16 07:08:57,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:08:57,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804393519] [2023-12-16 07:08:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:08:57,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:08:57,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:08:57,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:08:57,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 07:08:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:08:57,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 07:08:57,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:08:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 07:08:57,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:09:06,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:09:06,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804393519] [2023-12-16 07:09:06,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804393519] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 07:09:06,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1792081549] [2023-12-16 07:09:06,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:09:06,424 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 07:09:06,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 07:09:06,474 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) [2023-12-16 07:09:06,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-16 07:09:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:09:06,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 07:09:06,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:09:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 07:09:07,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:09:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-16 07:09:07,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1792081549] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:09:07,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 07:09:07,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2023-12-16 07:09:07,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456640640] [2023-12-16 07:09:07,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 07:09:07,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-16 07:09:07,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:09:07,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-16 07:09:07,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=379, Unknown=2, NotChecked=0, Total=506 [2023-12-16 07:09:07,996 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-16 07:09:10,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:09:10,393 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2023-12-16 07:09:10,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 07:09:10,395 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 28 [2023-12-16 07:09:10,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:09:10,397 INFO L225 Difference]: With dead ends: 67 [2023-12-16 07:09:10,397 INFO L226 Difference]: Without dead ends: 37 [2023-12-16 07:09:10,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=318, Invalid=940, Unknown=2, NotChecked=0, Total=1260 [2023-12-16 07:09:10,400 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 72 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:09:10,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 121 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 07:09:10,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-16 07:09:10,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2023-12-16 07:09:10,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:09:10,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-12-16 07:09:10,414 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 28 [2023-12-16 07:09:10,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:09:10,415 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-12-16 07:09:10,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-16 07:09:10,415 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2023-12-16 07:09:10,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-16 07:09:10,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:09:10,416 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:09:10,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-16 07:09:10,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-16 07:09:10,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 07:09:10,824 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:09:10,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:09:10,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1532817290, now seen corresponding path program 2 times [2023-12-16 07:09:10,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:09:10,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996352482] [2023-12-16 07:09:10,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 07:09:10,825 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:09:10,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:09:10,828 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:09:10,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 07:09:10,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 07:09:10,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:09:10,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 07:09:10,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:09:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 07:09:11,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:09:11,610 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-16 07:09:11,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:09:11,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996352482] [2023-12-16 07:09:11,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996352482] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:09:11,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:09:11,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 16 [2023-12-16 07:09:11,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995947356] [2023-12-16 07:09:11,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:09:11,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 07:09:11,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:09:11,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 07:09:11,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-12-16 07:09:11,612 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 07:09:12,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:09:12,186 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2023-12-16 07:09:12,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 07:09:12,186 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 30 [2023-12-16 07:09:12,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:09:12,187 INFO L225 Difference]: With dead ends: 32 [2023-12-16 07:09:12,187 INFO L226 Difference]: Without dead ends: 28 [2023-12-16 07:09:12,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2023-12-16 07:09:12,188 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 07:09:12,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 88 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 07:09:12,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-16 07:09:12,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-16 07:09:12,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:09:12,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-12-16 07:09:12,192 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 30 [2023-12-16 07:09:12,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:09:12,193 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-12-16 07:09:12,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 07:09:12,194 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-12-16 07:09:12,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 07:09:12,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:09:12,194 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:09:12,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 07:09:12,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:09:12,400 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:09:12,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:09:12,401 INFO L85 PathProgramCache]: Analyzing trace with hash 302007197, now seen corresponding path program 3 times [2023-12-16 07:09:12,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:09:12,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907966450] [2023-12-16 07:09:12,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 07:09:12,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:09:12,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:09:12,403 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:09:12,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 07:09:12,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-16 07:09:12,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:09:12,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 07:09:12,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:09:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:09:13,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:09:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:09:14,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:09:14,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907966450] [2023-12-16 07:09:14,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907966450] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:09:14,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:09:14,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2023-12-16 07:09:14,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108711278] [2023-12-16 07:09:14,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:09:14,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 07:09:14,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:09:14,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 07:09:14,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2023-12-16 07:09:14,216 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 18 states, 15 states have (on average 2.466666666666667) internal successors, (37), 16 states have internal predecessors, (37), 5 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-16 07:09:16,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:09:16,801 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2023-12-16 07:09:16,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 07:09:16,804 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 2.466666666666667) internal successors, (37), 16 states have internal predecessors, (37), 5 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 31 [2023-12-16 07:09:16,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:09:16,806 INFO L225 Difference]: With dead ends: 40 [2023-12-16 07:09:16,806 INFO L226 Difference]: Without dead ends: 36 [2023-12-16 07:09:16,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=237, Invalid=755, Unknown=0, NotChecked=0, Total=992 [2023-12-16 07:09:16,807 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 49 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 07:09:16,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 64 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 07:09:16,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-16 07:09:16,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2023-12-16 07:09:16,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:09:16,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-12-16 07:09:16,817 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 31 [2023-12-16 07:09:16,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:09:16,818 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-12-16 07:09:16,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 2.466666666666667) internal successors, (37), 16 states have internal predecessors, (37), 5 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-16 07:09:16,818 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-12-16 07:09:16,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-16 07:09:16,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:09:16,819 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:09:16,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-16 07:09:17,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:09:17,023 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:09:17,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:09:17,023 INFO L85 PathProgramCache]: Analyzing trace with hash 801599978, now seen corresponding path program 4 times [2023-12-16 07:09:17,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:09:17,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009864768] [2023-12-16 07:09:17,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 07:09:17,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:09:17,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:09:17,025 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:09:17,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 07:09:17,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 07:09:17,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:09:17,296 WARN L260 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-16 07:09:17,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:09:17,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 07:09:17,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 07:09:17,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-16 07:09:17,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-16 07:09:17,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-12-16 07:09:17,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2023-12-16 07:09:19,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:19,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:19,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:19,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:19,431 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 07:09:19,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:19,435 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 07:09:19,468 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-12-16 07:09:19,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 73 treesize of output 87 [2023-12-16 07:09:19,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:19,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:19,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:19,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:19,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:19,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:19,521 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 07:09:19,522 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 07:09:19,536 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-12-16 07:09:19,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 69 treesize of output 83 [2023-12-16 07:09:21,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:21,706 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 07:09:21,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:21,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:21,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:21,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:21,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:21,726 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 07:09:21,727 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 07:09:21,821 INFO L349 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2023-12-16 07:09:21,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 88 treesize of output 46 [2023-12-16 07:09:21,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:21,841 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 07:09:21,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:21,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:21,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:21,854 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 07:09:21,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:09:21,858 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 07:09:21,893 INFO L349 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2023-12-16 07:09:21,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 88 treesize of output 46 [2023-12-16 07:09:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 07:09:22,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:09:44,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 828 treesize of output 810 [2023-12-16 07:09:44,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 810 treesize of output 792 Received shutdown request... [2023-12-16 07:10:11,551 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 07:10:11,589 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 07:10:12,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 07:10:12,723 WARN L235 SmtUtils]: Removed 10 from assertion stack [2023-12-16 07:10:12,725 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 07:10:12,725 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 33 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 48 for 26672ms.. [2023-12-16 07:10:12,728 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2023-12-16 07:10:12,730 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 07:10:12,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:10:12 BoogieIcfgContainer [2023-12-16 07:10:12,731 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 07:10:12,731 INFO L158 Benchmark]: Toolchain (without parser) took 77535.93ms. Allocated memory was 219.2MB in the beginning and 311.4MB in the end (delta: 92.3MB). Free memory was 152.3MB in the beginning and 113.6MB in the end (delta: 38.8MB). Peak memory consumption was 168.7MB. Max. memory is 8.0GB. [2023-12-16 07:10:12,732 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 219.2MB. Free memory is still 167.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 07:10:12,732 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.92ms. Allocated memory was 219.2MB in the beginning and 311.4MB in the end (delta: 92.3MB). Free memory was 152.1MB in the beginning and 276.8MB in the end (delta: -124.7MB). Peak memory consumption was 17.9MB. Max. memory is 8.0GB. [2023-12-16 07:10:12,732 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.71ms. Allocated memory is still 311.4MB. Free memory was 276.8MB in the beginning and 274.9MB in the end (delta: 1.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 07:10:12,732 INFO L158 Benchmark]: Boogie Preprocessor took 73.07ms. Allocated memory is still 311.4MB. Free memory was 274.9MB in the beginning and 272.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 07:10:12,732 INFO L158 Benchmark]: RCFGBuilder took 460.18ms. Allocated memory is still 311.4MB. Free memory was 272.8MB in the beginning and 257.6MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 07:10:12,732 INFO L158 Benchmark]: TraceAbstraction took 76679.92ms. Allocated memory is still 311.4MB. Free memory was 256.5MB in the beginning and 113.6MB in the end (delta: 143.0MB). Peak memory consumption was 180.2MB. Max. memory is 8.0GB. [2023-12-16 07:10:12,744 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 219.2MB. Free memory is still 167.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 251.92ms. Allocated memory was 219.2MB in the beginning and 311.4MB in the end (delta: 92.3MB). Free memory was 152.1MB in the beginning and 276.8MB in the end (delta: -124.7MB). Peak memory consumption was 17.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 64.71ms. Allocated memory is still 311.4MB. Free memory was 276.8MB in the beginning and 274.9MB in the end (delta: 1.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 73.07ms. Allocated memory is still 311.4MB. Free memory was 274.9MB in the beginning and 272.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 460.18ms. Allocated memory is still 311.4MB. Free memory was 272.8MB in the beginning and 257.6MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 76679.92ms. Allocated memory is still 311.4MB. Free memory was 256.5MB in the beginning and 113.6MB in the end (delta: 143.0MB). Peak memory consumption was 180.2MB. 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 - TimeoutResultAtElement [Line: 34]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 34). Cancelled while NwaCegarLoop was analyzing trace of length 33 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 48 for 26672ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 76.6s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 169 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 167 mSDsluCounter, 383 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 282 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 538 IncrementalHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 101 mSDtfsCounter, 538 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 312 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=6, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 17 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.7s InterpolantComputationTime, 184 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 263 ConstructedInterpolants, 107 QuantifiedInterpolants, 1665 SizeOfPredicates, 27 NumberOfNonLiveVariables, 505 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 124/147 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 could not prove your program: Timeout Completed graceful shutdown