/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-examples/sorting_selectionsort_2_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 15:27:24,524 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 15:27:24,588 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 15:27:24,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 15:27:24,594 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 15:27:24,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 15:27:24,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 15:27:24,611 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 15:27:24,612 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 15:27:24,612 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 15:27:24,612 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 15:27:24,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 15:27:24,613 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 15:27:24,613 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 15:27:24,613 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 15:27:24,613 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 15:27:24,614 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 15:27:24,614 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 15:27:24,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 15:27:24,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 15:27:24,615 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 15:27:24,628 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 15:27:24,628 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 15:27:24,629 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 15:27:24,629 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 15:27:24,629 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 15:27:24,629 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 15:27:24,629 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 15:27:24,630 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 15:27:24,630 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 15:27:24,630 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 15:27:24,630 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 15:27:24,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 15:27:24,630 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 15:27:24,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 15:27:24,631 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 15:27:24,631 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 15:27:24,631 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 15:27:24,631 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 15:27:24,631 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 15:27:24,632 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 15:27:24,632 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 15:27:24,632 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 15:27:24,633 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 15:27:24,633 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 15:27:24,633 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 15:27:24,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 15:27:24,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 15:27:24,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 15:27:24,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 15:27:24,878 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 15:27:24,883 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 15:27:24,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sorting_selectionsort_2_ground.i [2023-12-21 15:27:25,936 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 15:27:26,097 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 15:27:26,098 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sorting_selectionsort_2_ground.i [2023-12-21 15:27:26,104 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1adfcbd0/1be63fbe7a36410bb40fb64aa8472b48/FLAGc7bc48371 [2023-12-21 15:27:26,117 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1adfcbd0/1be63fbe7a36410bb40fb64aa8472b48 [2023-12-21 15:27:26,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 15:27:26,119 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 15:27:26,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 15:27:26,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 15:27:26,125 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 15:27:26,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,126 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e1cc43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26, skipping insertion in model container [2023-12-21 15:27:26,126 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,144 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 15:27:26,258 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-examples/sorting_selectionsort_2_ground.i[823,836] [2023-12-21 15:27:26,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 15:27:26,280 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 15:27:26,289 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-examples/sorting_selectionsort_2_ground.i[823,836] [2023-12-21 15:27:26,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 15:27:26,311 INFO L206 MainTranslator]: Completed translation [2023-12-21 15:27:26,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26 WrapperNode [2023-12-21 15:27:26,312 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 15:27:26,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 15:27:26,313 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 15:27:26,313 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 15:27:26,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,323 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,342 INFO L138 Inliner]: procedures = 18, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 115 [2023-12-21 15:27:26,343 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 15:27:26,343 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 15:27:26,343 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 15:27:26,344 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 15:27:26,351 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,354 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,366 INFO L175 MemorySlicer]: Split 15 memory accesses to 2 slices as follows [2, 13]. 87 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2023-12-21 15:27:26,366 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,366 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,371 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,374 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,375 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,376 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,377 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 15:27:26,378 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 15:27:26,378 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 15:27:26,378 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 15:27:26,379 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (1/1) ... [2023-12-21 15:27:26,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 15:27:26,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 15:27:26,445 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) [2023-12-21 15:27:26,466 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 [2023-12-21 15:27:26,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 15:27:26,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 15:27:26,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 15:27:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 15:27:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 15:27:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 15:27:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 15:27:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 15:27:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-21 15:27:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-21 15:27:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 15:27:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 15:27:26,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 15:27:26,536 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 15:27:26,538 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 15:27:26,754 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 15:27:26,792 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 15:27:26,792 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-21 15:27:26,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:27:26 BoogieIcfgContainer [2023-12-21 15:27:26,792 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 15:27:26,794 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 15:27:26,794 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 15:27:26,798 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 15:27:26,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:27:26" (1/3) ... [2023-12-21 15:27:26,799 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4318fe24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:27:26, skipping insertion in model container [2023-12-21 15:27:26,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:26" (2/3) ... [2023-12-21 15:27:26,799 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4318fe24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:27:26, skipping insertion in model container [2023-12-21 15:27:26,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:27:26" (3/3) ... [2023-12-21 15:27:26,800 INFO L112 eAbstractionObserver]: Analyzing ICFG sorting_selectionsort_2_ground.i [2023-12-21 15:27:26,811 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 15:27:26,811 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 15:27:26,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 15:27:26,853 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;@6f793f59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 15:27:26,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 15:27:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 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) [2023-12-21 15:27:26,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 15:27:26,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:26,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:26,861 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:26,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:26,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2038256253, now seen corresponding path program 1 times [2023-12-21 15:27:26,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:26,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828026435] [2023-12-21 15:27:26,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:26,872 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 [2023-12-21 15:27:26,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:26,874 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) [2023-12-21 15:27:26,878 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 [2023-12-21 15:27:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:26,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 15:27:26,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:27:26,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:27:26,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:26,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828026435] [2023-12-21 15:27:26,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828026435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:27:26,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:27:26,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 15:27:26,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778997488] [2023-12-21 15:27:26,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:27:26,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 15:27:26,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:26,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 15:27:26,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 15:27:26,959 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:26,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:27,000 INFO L93 Difference]: Finished difference Result 64 states and 105 transitions. [2023-12-21 15:27:27,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 15:27:27,002 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-21 15:27:27,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:27,006 INFO L225 Difference]: With dead ends: 64 [2023-12-21 15:27:27,007 INFO L226 Difference]: Without dead ends: 31 [2023-12-21 15:27:27,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 15:27:27,013 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:27,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:27:27,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-21 15:27:27,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-12-21 15:27:27,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 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) [2023-12-21 15:27:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2023-12-21 15:27:27,039 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2023-12-21 15:27:27,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:27,040 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2023-12-21 15:27:27,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:27,041 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2023-12-21 15:27:27,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 15:27:27,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:27,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:27,048 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 [2023-12-21 15:27:27,244 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 [2023-12-21 15:27:27,244 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:27,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:27,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1919310343, now seen corresponding path program 1 times [2023-12-21 15:27:27,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:27,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783959767] [2023-12-21 15:27:27,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:27,246 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 [2023-12-21 15:27:27,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:27,247 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) [2023-12-21 15:27:27,249 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 [2023-12-21 15:27:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:27,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 15:27:27,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:27:27,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:27:27,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:27,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783959767] [2023-12-21 15:27:27,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783959767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:27:27,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:27:27,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 15:27:27,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460056433] [2023-12-21 15:27:27,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:27:27,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 15:27:27,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:27,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 15:27:27,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:27:27,335 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:27,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:27,445 INFO L93 Difference]: Finished difference Result 77 states and 108 transitions. [2023-12-21 15:27:27,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 15:27:27,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-21 15:27:27,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:27,448 INFO L225 Difference]: With dead ends: 77 [2023-12-21 15:27:27,448 INFO L226 Difference]: Without dead ends: 48 [2023-12-21 15:27:27,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:27:27,450 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:27,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 51 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:27:27,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-21 15:27:27,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 33. [2023-12-21 15:27:27,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 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) [2023-12-21 15:27:27,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2023-12-21 15:27:27,469 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 11 [2023-12-21 15:27:27,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:27,470 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2023-12-21 15:27:27,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:27,470 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2023-12-21 15:27:27,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-21 15:27:27,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:27,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:27,476 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 [2023-12-21 15:27:27,673 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 [2023-12-21 15:27:27,674 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:27,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:27,675 INFO L85 PathProgramCache]: Analyzing trace with hash -891550513, now seen corresponding path program 1 times [2023-12-21 15:27:27,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:27,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484086493] [2023-12-21 15:27:27,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:27,676 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 [2023-12-21 15:27:27,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:27,677 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) [2023-12-21 15:27:27,698 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 [2023-12-21 15:27:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:27,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 15:27:27,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:27,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:27:27,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:27:27,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:27,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484086493] [2023-12-21 15:27:27,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484086493] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:27,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:27,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 15:27:27,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592045737] [2023-12-21 15:27:27,746 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:27,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 15:27:27,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:27,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 15:27:27,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 15:27:27,747 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:27,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:27,891 INFO L93 Difference]: Finished difference Result 114 states and 165 transitions. [2023-12-21 15:27:27,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 15:27:27,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-21 15:27:27,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:27,893 INFO L225 Difference]: With dead ends: 114 [2023-12-21 15:27:27,893 INFO L226 Difference]: Without dead ends: 84 [2023-12-21 15:27:27,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 15:27:27,894 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 93 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:27,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 127 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:27:27,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-21 15:27:27,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-12-21 15:27:27,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 73 states have (on average 1.3835616438356164) internal successors, (101), 73 states have internal predecessors, (101), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-21 15:27:27,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 119 transitions. [2023-12-21 15:27:27,904 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 119 transitions. Word has length 14 [2023-12-21 15:27:27,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:27,904 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 119 transitions. [2023-12-21 15:27:27,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:27,904 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 119 transitions. [2023-12-21 15:27:27,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 15:27:27,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:27,905 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:27,907 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 (4)] Forceful destruction successful, exit code 0 [2023-12-21 15:27:28,110 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 [2023-12-21 15:27:28,110 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:28,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:28,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1261296920, now seen corresponding path program 2 times [2023-12-21 15:27:28,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:28,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443742471] [2023-12-21 15:27:28,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:27:28,116 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 [2023-12-21 15:27:28,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:28,117 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) [2023-12-21 15:27:28,121 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 [2023-12-21 15:27:28,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 15:27:28,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:27:28,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 15:27:28,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 15:27:28,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:27:28,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:28,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443742471] [2023-12-21 15:27:28,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443742471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:27:28,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:27:28,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 15:27:28,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169665692] [2023-12-21 15:27:28,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:27:28,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 15:27:28,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:28,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 15:27:28,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 15:27:28,177 INFO L87 Difference]: Start difference. First operand 84 states and 119 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:28,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:28,262 INFO L93 Difference]: Finished difference Result 160 states and 229 transitions. [2023-12-21 15:27:28,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 15:27:28,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-21 15:27:28,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:28,266 INFO L225 Difference]: With dead ends: 160 [2023-12-21 15:27:28,267 INFO L226 Difference]: Without dead ends: 87 [2023-12-21 15:27:28,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 15:27:28,273 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 26 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:28,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 71 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:27:28,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-21 15:27:28,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2023-12-21 15:27:28,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 74 states have (on average 1.3783783783783783) internal successors, (102), 74 states have internal predecessors, (102), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-21 15:27:28,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 120 transitions. [2023-12-21 15:27:28,291 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 120 transitions. Word has length 17 [2023-12-21 15:27:28,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:28,292 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 120 transitions. [2023-12-21 15:27:28,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:28,292 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 120 transitions. [2023-12-21 15:27:28,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 15:27:28,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:28,294 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:28,296 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 [2023-12-21 15:27:28,496 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 [2023-12-21 15:27:28,496 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:28,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:28,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1641264908, now seen corresponding path program 1 times [2023-12-21 15:27:28,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:28,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450588893] [2023-12-21 15:27:28,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:28,498 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 [2023-12-21 15:27:28,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:28,499 INFO L229 MonitoredProcess]: Starting monitored process 6 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) [2023-12-21 15:27:28,501 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 (6)] Waiting until timeout for monitored process [2023-12-21 15:27:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:28,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 15:27:28,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 15:27:28,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 15:27:28,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:28,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450588893] [2023-12-21 15:27:28,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450588893] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:28,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:28,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 15:27:28,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291749841] [2023-12-21 15:27:28,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:28,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 15:27:28,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:28,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 15:27:28,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 15:27:28,659 INFO L87 Difference]: Start difference. First operand 85 states and 120 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:29,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:29,215 INFO L93 Difference]: Finished difference Result 266 states and 395 transitions. [2023-12-21 15:27:29,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 15:27:29,216 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-21 15:27:29,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:29,217 INFO L225 Difference]: With dead ends: 266 [2023-12-21 15:27:29,218 INFO L226 Difference]: Without dead ends: 187 [2023-12-21 15:27:29,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 15:27:29,219 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 702 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:29,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 377 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 15:27:29,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-12-21 15:27:29,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2023-12-21 15:27:29,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 164 states have (on average 1.3902439024390243) internal successors, (228), 164 states have internal predecessors, (228), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-21 15:27:29,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 270 transitions. [2023-12-21 15:27:29,234 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 270 transitions. Word has length 20 [2023-12-21 15:27:29,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:29,234 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 270 transitions. [2023-12-21 15:27:29,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:29,234 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 270 transitions. [2023-12-21 15:27:29,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 15:27:29,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:29,235 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:29,241 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 (6)] Forceful destruction successful, exit code 0 [2023-12-21 15:27:29,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /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 [2023-12-21 15:27:29,438 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:29,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:29,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1044864596, now seen corresponding path program 2 times [2023-12-21 15:27:29,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:29,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524562491] [2023-12-21 15:27:29,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:27:29,439 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 [2023-12-21 15:27:29,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:29,441 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) [2023-12-21 15:27:29,443 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 [2023-12-21 15:27:29,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 15:27:29,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:27:29,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 15:27:29,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 15:27:29,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:27:29,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:29,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524562491] [2023-12-21 15:27:29,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524562491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:27:29,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:27:29,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 15:27:29,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493254311] [2023-12-21 15:27:29,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:27:29,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 15:27:29,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:29,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 15:27:29,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 15:27:29,522 INFO L87 Difference]: Start difference. First operand 187 states and 270 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:29,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:29,573 INFO L93 Difference]: Finished difference Result 350 states and 510 transitions. [2023-12-21 15:27:29,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 15:27:29,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-21 15:27:29,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:29,574 INFO L225 Difference]: With dead ends: 350 [2023-12-21 15:27:29,574 INFO L226 Difference]: Without dead ends: 183 [2023-12-21 15:27:29,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 15:27:29,575 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 8 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:29,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 59 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:27:29,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-21 15:27:29,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-12-21 15:27:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 161 states have (on average 1.3850931677018634) internal successors, (223), 161 states have internal predecessors, (223), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 15:27:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 263 transitions. [2023-12-21 15:27:29,586 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 263 transitions. Word has length 26 [2023-12-21 15:27:29,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:29,586 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 263 transitions. [2023-12-21 15:27:29,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 263 transitions. [2023-12-21 15:27:29,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-21 15:27:29,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:29,587 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:29,592 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 (7)] Ended with exit code 0 [2023-12-21 15:27:29,789 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 [2023-12-21 15:27:29,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:29,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:29,792 INFO L85 PathProgramCache]: Analyzing trace with hash 844164673, now seen corresponding path program 1 times [2023-12-21 15:27:29,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:29,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471525592] [2023-12-21 15:27:29,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:29,793 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 [2023-12-21 15:27:29,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:29,794 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) [2023-12-21 15:27:29,816 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 [2023-12-21 15:27:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:29,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 15:27:29,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:29,989 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 15:27:29,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:30,276 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 15:27:30,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:30,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471525592] [2023-12-21 15:27:30,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471525592] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:30,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:30,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 15:27:30,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711203675] [2023-12-21 15:27:30,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:30,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 15:27:30,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:30,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 15:27:30,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 15:27:30,278 INFO L87 Difference]: Start difference. First operand 183 states and 263 transitions. Second operand has 24 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 23 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:32,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:32,346 INFO L93 Difference]: Finished difference Result 558 states and 837 transitions. [2023-12-21 15:27:32,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 15:27:32,347 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 23 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-21 15:27:32,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:32,348 INFO L225 Difference]: With dead ends: 558 [2023-12-21 15:27:32,349 INFO L226 Difference]: Without dead ends: 387 [2023-12-21 15:27:32,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 15:27:32,350 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 2041 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2064 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 2003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:32,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2064 Valid, 1490 Invalid, 2199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 2003 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 15:27:32,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-12-21 15:27:32,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2023-12-21 15:27:32,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 341 states have (on average 1.3929618768328447) internal successors, (475), 341 states have internal predecessors, (475), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-21 15:27:32,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 563 transitions. [2023-12-21 15:27:32,368 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 563 transitions. Word has length 27 [2023-12-21 15:27:32,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:32,369 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 563 transitions. [2023-12-21 15:27:32,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 23 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:32,369 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 563 transitions. [2023-12-21 15:27:32,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 15:27:32,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:32,370 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:32,375 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 (8)] Forceful destruction successful, exit code 0 [2023-12-21 15:27:32,575 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 [2023-12-21 15:27:32,575 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:32,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:32,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1131393921, now seen corresponding path program 2 times [2023-12-21 15:27:32,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:32,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456895910] [2023-12-21 15:27:32,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:27:32,576 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 [2023-12-21 15:27:32,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:32,577 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) [2023-12-21 15:27:32,599 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 [2023-12-21 15:27:32,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 15:27:32,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:27:32,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 15:27:32,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:32,948 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 15:27:32,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 15:27:34,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:34,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456895910] [2023-12-21 15:27:34,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456895910] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:34,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:34,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 15:27:34,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039118637] [2023-12-21 15:27:34,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:34,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 15:27:34,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:34,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 15:27:34,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 15:27:34,085 INFO L87 Difference]: Start difference. First operand 387 states and 563 transitions. Second operand has 48 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 47 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:43,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:43,987 INFO L93 Difference]: Finished difference Result 1158 states and 1749 transitions. [2023-12-21 15:27:43,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 15:27:43,988 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 47 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-21 15:27:43,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:43,992 INFO L225 Difference]: With dead ends: 1158 [2023-12-21 15:27:43,992 INFO L226 Difference]: Without dead ends: 795 [2023-12-21 15:27:43,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 15:27:43,994 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 9065 mSDsluCounter, 5570 mSDsCounter, 0 mSdLazyCounter, 8412 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9112 SdHoareTripleChecker+Valid, 5859 SdHoareTripleChecker+Invalid, 9132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 8412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:43,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9112 Valid, 5859 Invalid, 9132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 8412 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-21 15:27:43,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2023-12-21 15:27:44,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 795. [2023-12-21 15:27:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 701 states have (on average 1.3965763195435092) internal successors, (979), 701 states have internal predecessors, (979), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-21 15:27:44,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1163 transitions. [2023-12-21 15:27:44,021 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1163 transitions. Word has length 39 [2023-12-21 15:27:44,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:44,022 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1163 transitions. [2023-12-21 15:27:44,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 47 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:44,022 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1163 transitions. [2023-12-21 15:27:44,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 15:27:44,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:44,024 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:44,028 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 (9)] Ended with exit code 0 [2023-12-21 15:27:44,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 [2023-12-21 15:27:44,225 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:44,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1522769409, now seen corresponding path program 3 times [2023-12-21 15:27:44,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:44,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085728167] [2023-12-21 15:27:44,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 15:27:44,226 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 [2023-12-21 15:27:44,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:44,227 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2023-12-21 15:27:44,247 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 (10)] Waiting until timeout for monitored process [2023-12-21 15:27:44,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 15:27:44,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:27:44,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 15:27:44,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:44,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-21 15:27:44,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-12-21 15:27:44,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:44,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085728167] [2023-12-21 15:27:44,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085728167] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:44,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:44,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-21 15:27:44,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584634393] [2023-12-21 15:27:44,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:44,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 15:27:44,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:44,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 15:27:44,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 15:27:44,367 INFO L87 Difference]: Start difference. First operand 795 states and 1163 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:44,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:44,582 INFO L93 Difference]: Finished difference Result 1593 states and 2379 transitions. [2023-12-21 15:27:44,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 15:27:44,582 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-21 15:27:44,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:44,586 INFO L225 Difference]: With dead ends: 1593 [2023-12-21 15:27:44,586 INFO L226 Difference]: Without dead ends: 852 [2023-12-21 15:27:44,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-12-21 15:27:44,589 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 72 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:44,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 163 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:27:44,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2023-12-21 15:27:44,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 852. [2023-12-21 15:27:44,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 758 states have (on average 1.3720316622691293) internal successors, (1040), 758 states have internal predecessors, (1040), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-21 15:27:44,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1224 transitions. [2023-12-21 15:27:44,622 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1224 transitions. Word has length 63 [2023-12-21 15:27:44,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:44,623 INFO L495 AbstractCegarLoop]: Abstraction has 852 states and 1224 transitions. [2023-12-21 15:27:44,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:44,623 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1224 transitions. [2023-12-21 15:27:44,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 15:27:44,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:44,628 INFO L195 NwaCegarLoop]: trace histogram [46, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:44,645 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 (10)] Forceful destruction successful, exit code 0 [2023-12-21 15:27:44,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /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 [2023-12-21 15:27:44,831 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:44,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:44,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1069500211, now seen corresponding path program 4 times [2023-12-21 15:27:44,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:44,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296091] [2023-12-21 15:27:44,832 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 15:27:44,832 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 [2023-12-21 15:27:44,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:44,833 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2023-12-21 15:27:44,858 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 (11)] Waiting until timeout for monitored process [2023-12-21 15:27:44,963 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 15:27:44,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:27:44,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 15:27:44,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1103 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 15:27:46,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:50,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1103 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 15:27:50,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:50,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296091] [2023-12-21 15:27:50,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296091] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:50,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:50,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-21 15:27:50,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798016071] [2023-12-21 15:27:50,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:50,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 15:27:50,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:50,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 15:27:50,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 15:27:50,742 INFO L87 Difference]: Start difference. First operand 852 states and 1224 transitions. Second operand has 96 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 95 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:28:53,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:28:53,229 INFO L93 Difference]: Finished difference Result 2520 states and 3743 transitions. [2023-12-21 15:28:53,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 15:28:53,231 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 95 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-12-21 15:28:53,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:28:53,236 INFO L225 Difference]: With dead ends: 2520 [2023-12-21 15:28:53,236 INFO L226 Difference]: Without dead ends: 1716 [2023-12-21 15:28:53,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 49.6s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 15:28:53,240 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 39683 mSDsluCounter, 22658 mSDsCounter, 0 mSdLazyCounter, 34177 mSolverCounterSat, 2798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39778 SdHoareTripleChecker+Valid, 23234 SdHoareTripleChecker+Invalid, 36975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2798 IncrementalHoareTripleChecker+Valid, 34177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2023-12-21 15:28:53,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39778 Valid, 23234 Invalid, 36975 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2798 Valid, 34177 Invalid, 0 Unknown, 0 Unchecked, 16.9s Time] [2023-12-21 15:28:53,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2023-12-21 15:28:53,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1716. [2023-12-21 15:28:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1526 states have (on average 1.3735255570117955) internal successors, (2096), 1526 states have internal predecessors, (2096), 188 states have call successors, (188), 1 states have call predecessors, (188), 1 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2023-12-21 15:28:53,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2472 transitions. [2023-12-21 15:28:53,292 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2472 transitions. Word has length 72 [2023-12-21 15:28:53,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:28:53,293 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2472 transitions. [2023-12-21 15:28:53,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 95 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:28:53,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2472 transitions. [2023-12-21 15:28:53,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 15:28:53,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:28:53,294 INFO L195 NwaCegarLoop]: trace histogram [94, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:28:53,299 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 (11)] Forceful destruction successful, exit code 0 [2023-12-21 15:28:53,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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 [2023-12-21 15:28:53,500 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:28:53,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:28:53,500 INFO L85 PathProgramCache]: Analyzing trace with hash 774833101, now seen corresponding path program 5 times [2023-12-21 15:28:53,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:28:53,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970038022] [2023-12-21 15:28:53,501 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 15:28:53,501 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 [2023-12-21 15:28:53,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:28:53,502 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2023-12-21 15:28:53,503 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 (12)] Waiting until timeout for monitored process [2023-12-21 15:28:56,940 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2023-12-21 15:28:56,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:28:56,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 15:28:56,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:28:57,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4487 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-21 15:28:57,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:28:57,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4487 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-21 15:28:57,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:28:57,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970038022] [2023-12-21 15:28:57,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970038022] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:28:57,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:28:57,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-21 15:28:57,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007280924] [2023-12-21 15:28:57,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:28:57,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 15:28:57,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:28:57,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 15:28:57,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-12-21 15:28:57,149 INFO L87 Difference]: Start difference. First operand 1716 states and 2472 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:28:57,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:28:57,682 INFO L93 Difference]: Finished difference Result 3348 states and 4872 transitions. [2023-12-21 15:28:57,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 15:28:57,683 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-12-21 15:28:57,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:28:57,689 INFO L225 Difference]: With dead ends: 3348 [2023-12-21 15:28:57,689 INFO L226 Difference]: Without dead ends: 1743 [2023-12-21 15:28:57,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=251, Invalid=561, Unknown=0, NotChecked=0, Total=812 [2023-12-21 15:28:57,693 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 202 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 15:28:57,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 217 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 15:28:57,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2023-12-21 15:28:57,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1743. [2023-12-21 15:28:57,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1743 states, 1553 states have (on average 1.372826786864134) internal successors, (2132), 1553 states have internal predecessors, (2132), 188 states have call successors, (188), 1 states have call predecessors, (188), 1 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2023-12-21 15:28:57,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 2508 transitions. [2023-12-21 15:28:57,744 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 2508 transitions. Word has length 120 [2023-12-21 15:28:57,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:28:57,745 INFO L495 AbstractCegarLoop]: Abstraction has 1743 states and 2508 transitions. [2023-12-21 15:28:57,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:28:57,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 2508 transitions. [2023-12-21 15:28:57,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 15:28:57,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:28:57,746 INFO L195 NwaCegarLoop]: trace histogram [94, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:28:57,780 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 (12)] Ended with exit code 0 [2023-12-21 15:28:57,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /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 [2023-12-21 15:28:57,952 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:28:57,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:28:57,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1651052109, now seen corresponding path program 6 times [2023-12-21 15:28:57,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:28:57,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283168101] [2023-12-21 15:28:57,953 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 15:28:57,953 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 [2023-12-21 15:28:57,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:28:57,954 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2023-12-21 15:28:57,980 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 (13)] Waiting until timeout for monitored process [2023-12-21 15:28:58,085 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-21 15:28:58,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:28:58,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 15:28:58,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:28:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4610 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 4591 trivial. 0 not checked. [2023-12-21 15:28:58,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:28:58,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:28:58,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283168101] [2023-12-21 15:28:58,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283168101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:28:58,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:28:58,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 15:28:58,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383225665] [2023-12-21 15:28:58,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:28:58,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 15:28:58,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:28:58,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 15:28:58,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 15:28:58,179 INFO L87 Difference]: Start difference. First operand 1743 states and 2508 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:28:58,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:28:58,338 INFO L93 Difference]: Finished difference Result 3402 states and 4932 transitions. [2023-12-21 15:28:58,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 15:28:58,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-21 15:28:58,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:28:58,343 INFO L225 Difference]: With dead ends: 3402 [2023-12-21 15:28:58,343 INFO L226 Difference]: Without dead ends: 1789 [2023-12-21 15:28:58,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 15:28:58,346 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 27 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:28:58,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 114 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:28:58,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2023-12-21 15:28:58,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1746. [2023-12-21 15:28:58,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1746 states, 1556 states have (on average 1.3727506426735219) internal successors, (2136), 1556 states have internal predecessors, (2136), 188 states have call successors, (188), 1 states have call predecessors, (188), 1 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2023-12-21 15:28:58,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 2512 transitions. [2023-12-21 15:28:58,395 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 2512 transitions. Word has length 138 [2023-12-21 15:28:58,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:28:58,395 INFO L495 AbstractCegarLoop]: Abstraction has 1746 states and 2512 transitions. [2023-12-21 15:28:58,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:28:58,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 2512 transitions. [2023-12-21 15:28:58,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 15:28:58,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:28:58,396 INFO L195 NwaCegarLoop]: trace histogram [94, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:28:58,414 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 (13)] Ended with exit code 0 [2023-12-21 15:28:58,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 [2023-12-21 15:28:58,598 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:28:58,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:28:58,599 INFO L85 PathProgramCache]: Analyzing trace with hash 970993739, now seen corresponding path program 1 times [2023-12-21 15:28:58,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:28:58,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895447785] [2023-12-21 15:28:58,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:28:58,599 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 [2023-12-21 15:28:58,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:28:58,600 INFO L229 MonitoredProcess]: Starting monitored process 14 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) [2023-12-21 15:28:58,635 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 (14)] Waiting until timeout for monitored process [2023-12-21 15:28:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:28:58,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-21 15:28:58,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:29:01,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4610 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-21 15:29:01,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:29:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4610 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-21 15:29:20,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:29:20,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895447785] [2023-12-21 15:29:20,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895447785] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:29:20,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:29:20,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-21 15:29:20,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503188866] [2023-12-21 15:29:20,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:29:20,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 15:29:20,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:29:20,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 15:29:20,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 15:29:20,304 INFO L87 Difference]: Start difference. First operand 1746 states and 2512 transitions. Second operand has 192 states, 192 states have (on average 1.0729166666666667) internal successors, (206), 191 states have internal predecessors, (206), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:38:41,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:38:41,897 INFO L93 Difference]: Finished difference Result 5124 states and 7615 transitions. [2023-12-21 15:38:41,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-21 15:38:41,897 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.0729166666666667) internal successors, (206), 191 states have internal predecessors, (206), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-21 15:38:41,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:38:41,920 INFO L225 Difference]: With dead ends: 5124 [2023-12-21 15:38:41,920 INFO L226 Difference]: Without dead ends: 3474 [2023-12-21 15:38:41,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 501.3s TimeCoverageRelationStatistics Valid=27454, Invalid=54056, Unknown=0, NotChecked=0, Total=81510 [2023-12-21 15:38:41,943 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 150101 mSDsluCounter, 91595 mSDsCounter, 0 mSdLazyCounter, 137592 mSolverCounterSat, 9940 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150292 SdHoareTripleChecker+Valid, 92747 SdHoareTripleChecker+Invalid, 147532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 9940 IncrementalHoareTripleChecker+Valid, 137592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.2s IncrementalHoareTripleChecker+Time [2023-12-21 15:38:41,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150292 Valid, 92747 Invalid, 147532 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [9940 Valid, 137592 Invalid, 0 Unknown, 0 Unchecked, 70.2s Time] [2023-12-21 15:38:41,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3474 states. [2023-12-21 15:38:42,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3474 to 3474. [2023-12-21 15:38:42,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3474 states, 3092 states have (on average 1.3738680465717983) internal successors, (4248), 3092 states have internal predecessors, (4248), 380 states have call successors, (380), 1 states have call predecessors, (380), 1 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2023-12-21 15:38:42,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 5008 transitions. [2023-12-21 15:38:42,180 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 5008 transitions. Word has length 138 [2023-12-21 15:38:42,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:38:42,180 INFO L495 AbstractCegarLoop]: Abstraction has 3474 states and 5008 transitions. [2023-12-21 15:38:42,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.0729166666666667) internal successors, (206), 191 states have internal predecessors, (206), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:38:42,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 5008 transitions. [2023-12-21 15:38:42,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-21 15:38:42,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:38:42,182 INFO L195 NwaCegarLoop]: trace histogram [190, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:38:42,191 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 (14)] Ended with exit code 0 [2023-12-21 15:38:42,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /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 [2023-12-21 15:38:42,382 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:38:42,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:38:42,383 INFO L85 PathProgramCache]: Analyzing trace with hash 165496395, now seen corresponding path program 2 times [2023-12-21 15:38:42,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:38:42,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124612983] [2023-12-21 15:38:42,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:38:42,384 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 [2023-12-21 15:38:42,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:38:42,385 INFO L229 MonitoredProcess]: Starting monitored process 15 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) [2023-12-21 15:38:42,387 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 (15)] Waiting until timeout for monitored process [2023-12-21 15:38:42,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 15:38:42,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:38:42,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-21 15:38:42,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:38:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 18290 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-21 15:38:54,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:40:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 18290 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-21 15:40:14,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:40:14,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124612983] [2023-12-21 15:40:14,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124612983] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:40:14,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:40:14,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 383 [2023-12-21 15:40:14,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634911154] [2023-12-21 15:40:14,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:40:14,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-12-21 15:40:14,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:40:14,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-12-21 15:40:14,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37246, Invalid=109826, Unknown=0, NotChecked=0, Total=147072 [2023-12-21 15:40:14,232 INFO L87 Difference]: Start difference. First operand 3474 states and 5008 transitions. Second operand has 384 states, 384 states have (on average 1.0364583333333333) internal successors, (398), 383 states have internal predecessors, (398), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:41:01,042 WARN L293 SmtUtils]: Spent 8.93s on a formula simplification. DAG size of input: 574 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 15:41:28,869 WARN L293 SmtUtils]: Spent 8.37s on a formula simplification. DAG size of input: 571 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 15:41:58,717 WARN L293 SmtUtils]: Spent 9.32s on a formula simplification. DAG size of input: 568 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-21 15:42:03,450 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 [2023-12-21 15:42:03,450 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 (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 15:42:03,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-12-21 15:42:03,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 174.5s TimeCoverageRelationStatistics Valid=38398, Invalid=110984, Unknown=0, NotChecked=0, Total=149382 [2023-12-21 15:42:03,515 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36676 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2023-12-21 15:42:03,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 36676 Invalid, 0 Unknown, 0 Unchecked, 18.4s Time] [2023-12-21 15:42:03,517 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 15:42:03,533 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 (15)] Forceful destruction successful, exit code 0 [2023-12-21 15:42:03,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /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 [2023-12-21 15:42:03,731 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (3474states) and FLOYD_HOARE automaton (currently 196 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 387 known predicates. [2023-12-21 15:42:03,734 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 2, 2, 1, 1] [2023-12-21 15:42:03,736 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 15:42:03,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 03:42:03 BoogieIcfgContainer [2023-12-21 15:42:03,737 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 15:42:03,737 INFO L158 Benchmark]: Toolchain (without parser) took 877617.75ms. Allocated memory was 200.3MB in the beginning and 503.3MB in the end (delta: 303.0MB). Free memory was 137.7MB in the beginning and 201.4MB in the end (delta: -63.7MB). Peak memory consumption was 240.9MB. Max. memory is 8.0GB. [2023-12-21 15:42:03,737 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory is still 150.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 15:42:03,737 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.69ms. Allocated memory is still 200.3MB. Free memory was 137.2MB in the beginning and 125.3MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 15:42:03,738 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.12ms. Allocated memory is still 200.3MB. Free memory was 125.3MB in the beginning and 123.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 15:42:03,738 INFO L158 Benchmark]: Boogie Preprocessor took 34.13ms. Allocated memory is still 200.3MB. Free memory was 123.6MB in the beginning and 121.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 15:42:03,738 INFO L158 Benchmark]: RCFGBuilder took 414.32ms. Allocated memory is still 200.3MB. Free memory was 121.1MB in the beginning and 104.7MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-21 15:42:03,738 INFO L158 Benchmark]: TraceAbstraction took 876943.21ms. Allocated memory was 200.3MB in the beginning and 503.3MB in the end (delta: 303.0MB). Free memory was 103.7MB in the beginning and 201.4MB in the end (delta: -97.7MB). Peak memory consumption was 206.3MB. Max. memory is 8.0GB. [2023-12-21 15:42:03,739 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory is still 150.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 190.69ms. Allocated memory is still 200.3MB. Free memory was 137.2MB in the beginning and 125.3MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.12ms. Allocated memory is still 200.3MB. Free memory was 125.3MB in the beginning and 123.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.13ms. Allocated memory is still 200.3MB. Free memory was 123.6MB in the beginning and 121.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 414.32ms. Allocated memory is still 200.3MB. Free memory was 121.1MB in the beginning and 104.7MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 876943.21ms. Allocated memory was 200.3MB in the beginning and 503.3MB in the end (delta: 303.0MB). Free memory was 103.7MB in the beginning and 201.4MB in the end (delta: -97.7MB). Peak memory consumption was 206.3MB. 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: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (3474states) and FLOYD_HOARE automaton (currently 196 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 387 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 876.9s, OverallIterations: 14, TraceHistogramMax: 190, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 747.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 202425 SdHoareTripleChecker+Valid, 112.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 202039 mSDsluCounter, 124547 SdHoareTripleChecker+Invalid, 97.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 122068 mSDsCounter, 13771 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 220041 IncrementalHoareTripleChecker+Invalid, 233812 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13771 mSolverCounterUnsat, 2479 mSDtfsCounter, 220041 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1838 GetRequests, 859 SyntacticMatches, 0 SemanticMatches, 978 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5818 ImplicationChecksByTransitivity, 733.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3474occurred in iteration=13, InterpolantAutomatonStates: 428, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 60 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 4.0s SatisfiabilityAnalysisTime, 120.9s InterpolantComputationTime, 930 NumberOfCodeBlocks, 752 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 1634 ConstructedInterpolants, 0 QuantifiedInterpolants, 4083 SizeOfPredicates, 4 NumberOfNonLiveVariables, 3065 ConjunctsInSsa, 406 ConjunctsInUnsatCore, 23 InterpolantComputations, 5 PerfectInterpolantSequences, 16398/64464 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