/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_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 15:27:24,334 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 15:27:24,383 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 15:27:24,387 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 15:27:24,387 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 15:27:24,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 15:27:24,413 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 15:27:24,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 15:27:24,413 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 15:27:24,413 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 15:27:24,414 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 15:27:24,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 15:27:24,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 15:27:24,415 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 15:27:24,415 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 15:27:24,415 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 15:27:24,415 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 15:27:24,416 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 15:27:24,422 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 15:27:24,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 15:27:24,429 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 15:27:24,429 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 15:27:24,429 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 15:27:24,430 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 15:27:24,430 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 15:27:24,430 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 15:27:24,430 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 15:27:24,430 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 15:27:24,430 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 15:27:24,430 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 15:27:24,431 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 15:27:24,431 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 15:27:24,431 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 15:27:24,432 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 15:27:24,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 15:27:24,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 15:27:24,432 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 15:27:24,432 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 15:27:24,432 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 15:27:24,432 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 15:27:24,432 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 15:27:24,433 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 15:27:24,433 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 15:27:24,433 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 15:27:24,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 15:27:24,433 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 15:27:24,433 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 15:27:24,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 15:27:24,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 15:27:24,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 15:27:24,623 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 15:27:24,625 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 15:27:24,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-1.i [2023-12-21 15:27:25,661 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 15:27:25,777 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 15:27:25,777 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-1.i [2023-12-21 15:27:25,782 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b37edaae5/985ee2655bbe483d8f49e763d55e7490/FLAGbdb711a38 [2023-12-21 15:27:25,791 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b37edaae5/985ee2655bbe483d8f49e763d55e7490 [2023-12-21 15:27:25,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 15:27:25,794 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 15:27:25,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 15:27:25,795 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 15:27:25,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 15:27:25,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:25,802 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd0289a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25, skipping insertion in model container [2023-12-21 15:27:25,802 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:25,816 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 15:27:25,917 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_ground-1.i[823,836] [2023-12-21 15:27:25,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 15:27:25,948 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 15:27:25,957 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_ground-1.i[823,836] [2023-12-21 15:27:25,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 15:27:25,996 INFO L206 MainTranslator]: Completed translation [2023-12-21 15:27:25,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25 WrapperNode [2023-12-21 15:27:25,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 15:27:25,997 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 15:27:25,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 15:27:25,997 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 15:27:26,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:26,028 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:26,048 INFO L138 Inliner]: procedures = 18, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 116 [2023-12-21 15:27:26,048 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 15:27:26,049 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 15:27:26,049 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 15:27:26,049 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 15:27:26,057 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:26,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:26,059 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:26,067 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 15:27:26,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:26,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:26,072 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:26,075 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:26,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:26,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:26,078 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 15:27:26,079 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 15:27:26,079 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 15:27:26,079 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 15:27:26,080 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (1/1) ... [2023-12-21 15:27:26,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 15:27:26,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 15:27:26,108 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 15:27:26,110 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 15:27:26,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 15:27:26,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 15:27:26,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 15:27:26,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 15:27:26,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 15:27:26,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 15:27:26,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 15:27:26,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 15:27:26,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-21 15:27:26,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-21 15:27:26,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 15:27:26,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 15:27:26,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 15:27:26,179 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 15:27:26,180 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 15:27:26,378 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 15:27:26,404 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 15:27:26,405 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-21 15:27:26,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:27:26 BoogieIcfgContainer [2023-12-21 15:27:26,405 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 15:27:26,406 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 15:27:26,407 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 15:27:26,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 15:27:26,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:27:25" (1/3) ... [2023-12-21 15:27:26,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4eb491 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 15:27:26,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:25" (2/3) ... [2023-12-21 15:27:26,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4eb491 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 15:27:26,410 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 15:27:26,411 INFO L112 eAbstractionObserver]: Analyzing ICFG sorting_selectionsort_ground-1.i [2023-12-21 15:27:26,423 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 15:27:26,423 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 15:27:26,459 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 15:27:26,463 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;@72f30242, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 15:27:26,463 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 15:27:26,466 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 15:27:26,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 15:27:26,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:26,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:26,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:26,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:26,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2038256253, now seen corresponding path program 1 times [2023-12-21 15:27:26,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:26,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544718769] [2023-12-21 15:27:26,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:26,484 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 15:27:26,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:26,486 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 15:27:26,492 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 15:27:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:26,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 15:27:26,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:26,588 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 15:27:26,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:27:26,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:26,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544718769] [2023-12-21 15:27:26,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544718769] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:27:26,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:27:26,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 15:27:26,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278592589] [2023-12-21 15:27:26,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:27:26,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 15:27:26,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:26,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 15:27:26,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 15:27:26,623 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 15:27:26,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:26,667 INFO L93 Difference]: Finished difference Result 64 states and 105 transitions. [2023-12-21 15:27:26,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 15:27:26,670 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 15:27:26,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:26,674 INFO L225 Difference]: With dead ends: 64 [2023-12-21 15:27:26,675 INFO L226 Difference]: Without dead ends: 31 [2023-12-21 15:27:26,677 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 15:27:26,679 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 15:27:26,680 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 15:27:26,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-21 15:27:26,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-12-21 15:27:26,700 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 15:27:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2023-12-21 15:27:26,702 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2023-12-21 15:27:26,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:26,702 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2023-12-21 15:27:26,702 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 15:27:26,702 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2023-12-21 15:27:26,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 15:27:26,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:26,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:26,710 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 (2)] Forceful destruction successful, exit code 0 [2023-12-21 15:27:26,903 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 15:27:26,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:26,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:26,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1919310343, now seen corresponding path program 1 times [2023-12-21 15:27:26,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:26,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358496558] [2023-12-21 15:27:26,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:26,905 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 15:27:26,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:26,906 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 15:27:26,908 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 15:27:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:26,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 15:27:26,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:26,950 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 15:27:26,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:27:26,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:26,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358496558] [2023-12-21 15:27:26,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358496558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:27:26,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:27:26,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 15:27:26,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284768031] [2023-12-21 15:27:26,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:27:26,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 15:27:26,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:26,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 15:27:26,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:27:26,953 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 15:27:26,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:26,971 INFO L93 Difference]: Finished difference Result 61 states and 83 transitions. [2023-12-21 15:27:26,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 15:27:26,972 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 15:27:26,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:26,972 INFO L225 Difference]: With dead ends: 61 [2023-12-21 15:27:26,973 INFO L226 Difference]: Without dead ends: 32 [2023-12-21 15:27:26,973 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 15:27:26,974 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:26,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:27:26,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-21 15:27:26,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-21 15:27:26,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 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 15:27:26,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2023-12-21 15:27:26,983 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 11 [2023-12-21 15:27:26,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:26,983 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2023-12-21 15:27:26,983 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 15:27:26,984 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2023-12-21 15:27:26,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-21 15:27:26,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:26,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:26,987 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 15:27:27,186 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 15:27:27,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:27,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:27,188 INFO L85 PathProgramCache]: Analyzing trace with hash -929420434, now seen corresponding path program 1 times [2023-12-21 15:27:27,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:27,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453736040] [2023-12-21 15:27:27,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:27,188 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 15:27:27,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:27,189 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 15:27:27,190 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 15:27:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:27,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 15:27:27,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:27,243 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 15:27:27,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:27,265 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 15:27:27,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:27,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453736040] [2023-12-21 15:27:27,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453736040] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:27,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:27,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 15:27:27,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687038894] [2023-12-21 15:27:27,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:27,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 15:27:27,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:27,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 15:27:27,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 15:27:27,267 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 15:27:27,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:27,309 INFO L93 Difference]: Finished difference Result 64 states and 88 transitions. [2023-12-21 15:27:27,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 15:27:27,309 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 12 [2023-12-21 15:27:27,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:27,310 INFO L225 Difference]: With dead ends: 64 [2023-12-21 15:27:27,310 INFO L226 Difference]: Without dead ends: 35 [2023-12-21 15:27:27,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 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 15:27:27,311 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:27,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:27:27,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-21 15:27:27,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-12-21 15:27:27,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 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 15:27:27,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2023-12-21 15:27:27,315 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 12 [2023-12-21 15:27:27,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:27,316 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2023-12-21 15:27:27,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 15:27:27,316 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2023-12-21 15:27:27,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-21 15:27:27,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:27,316 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:27,325 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 15:27:27,518 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 15:27:27,518 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:27,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:27,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1233320903, now seen corresponding path program 2 times [2023-12-21 15:27:27,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:27,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4384931] [2023-12-21 15:27:27,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:27:27,520 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 15:27:27,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:27,521 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 15:27:27,523 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 15:27:27,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 15:27:27,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:27:27,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 15:27:27,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:27,579 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 15:27:27,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:27:27,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:27,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4384931] [2023-12-21 15:27:27,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4384931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:27:27,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:27:27,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 15:27:27,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123651168] [2023-12-21 15:27:27,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:27:27,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 15:27:27,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:27,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 15:27:27,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:27:27,581 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 15:27:27,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:27,644 INFO L93 Difference]: Finished difference Result 63 states and 84 transitions. [2023-12-21 15:27:27,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 15:27:27,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 15 [2023-12-21 15:27:27,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:27,645 INFO L225 Difference]: With dead ends: 63 [2023-12-21 15:27:27,645 INFO L226 Difference]: Without dead ends: 51 [2023-12-21 15:27:27,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 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 15:27:27,646 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 21 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:27,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 53 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:27:27,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-21 15:27:27,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 36. [2023-12-21 15:27:27,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 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 15:27:27,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2023-12-21 15:27:27,654 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 15 [2023-12-21 15:27:27,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:27,654 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2023-12-21 15:27:27,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 15:27:27,654 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2023-12-21 15:27:27,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 15:27:27,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:27,655 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:27,657 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 (5)] Forceful destruction successful, exit code 0 [2023-12-21 15:27:27,856 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 15:27:27,857 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:27,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:27,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1261296920, now seen corresponding path program 1 times [2023-12-21 15:27:27,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:27,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597960369] [2023-12-21 15:27:27,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:27,858 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 15:27:27,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:27,859 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 15:27:27,860 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 15:27:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:27,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 15:27:27,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:27:27,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:27:28,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:28,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597960369] [2023-12-21 15:27:28,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597960369] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:28,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:28,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 15:27:28,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854805584] [2023-12-21 15:27:28,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:28,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 15:27:28,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:28,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 15:27:28,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 15:27:28,031 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 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 15:27:28,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:28,196 INFO L93 Difference]: Finished difference Result 72 states and 99 transitions. [2023-12-21 15:27:28,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 15:27:28,197 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 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 15:27:28,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:28,197 INFO L225 Difference]: With dead ends: 72 [2023-12-21 15:27:28,197 INFO L226 Difference]: Without dead ends: 42 [2023-12-21 15:27:28,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 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 15:27:28,199 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:28,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 317 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:27:28,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-21 15:27:28,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-12-21 15:27:28,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 37 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 15:27:28,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2023-12-21 15:27:28,204 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 17 [2023-12-21 15:27:28,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:28,204 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2023-12-21 15:27:28,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 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 15:27:28,204 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2023-12-21 15:27:28,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 15:27:28,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:28,205 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:28,209 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 15:27:28,409 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 15:27:28,410 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:28,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:28,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1269696904, now seen corresponding path program 2 times [2023-12-21 15:27:28,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:28,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289739111] [2023-12-21 15:27:28,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:27:28,411 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 15:27:28,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:28,412 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 15:27:28,412 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 15:27:28,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 15:27:28,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:27:28,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 15:27:28,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 15:27:28,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:27:28,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:28,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289739111] [2023-12-21 15:27:28,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289739111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:27:28,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:27:28,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 15:27:28,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084422861] [2023-12-21 15:27:28,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:27:28,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 15:27:28,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:28,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 15:27:28,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 15:27:28,505 INFO L87 Difference]: Start difference. First operand 42 states and 53 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 15:27:28,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:28,577 INFO L93 Difference]: Finished difference Result 88 states and 119 transitions. [2023-12-21 15:27:28,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 15:27:28,577 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 23 [2023-12-21 15:27:28,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:28,579 INFO L225 Difference]: With dead ends: 88 [2023-12-21 15:27:28,580 INFO L226 Difference]: Without dead ends: 60 [2023-12-21 15:27:28,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 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 15:27:28,580 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 28 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:28,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 74 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:27:28,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-21 15:27:28,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 43. [2023-12-21 15:27:28,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.263157894736842) internal successors, (48), 38 states have internal predecessors, (48), 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 15:27:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2023-12-21 15:27:28,586 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 23 [2023-12-21 15:27:28,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:28,586 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2023-12-21 15:27:28,586 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 15:27:28,586 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2023-12-21 15:27:28,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 15:27:28,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:28,586 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 15:27:28,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 15:27:28,787 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 15:27:28,787 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:28,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:28,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1044864596, now seen corresponding path program 1 times [2023-12-21 15:27:28,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:28,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041178192] [2023-12-21 15:27:28,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:28,788 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 15:27:28,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:28,789 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 15:27:28,790 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 15:27:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:28,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 15:27:28,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:28,920 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 15:27:28,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:29,212 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 15:27:29,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:29,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041178192] [2023-12-21 15:27:29,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041178192] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:29,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:29,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 15:27:29,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798950195] [2023-12-21 15:27:29,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:29,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 15:27:29,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:29,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 15:27:29,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 15:27:29,214 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 23 states have internal predecessors, (37), 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 15:27:30,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:30,003 INFO L93 Difference]: Finished difference Result 86 states and 119 transitions. [2023-12-21 15:27:30,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 15:27:30,004 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 23 states have internal predecessors, (37), 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 15:27:30,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:30,005 INFO L225 Difference]: With dead ends: 86 [2023-12-21 15:27:30,005 INFO L226 Difference]: Without dead ends: 55 [2023-12-21 15:27:30,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 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 15:27:30,006 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:30,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 492 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:27:30,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-21 15:27:30,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-12-21 15:27:30,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 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 15:27:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2023-12-21 15:27:30,014 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 26 [2023-12-21 15:27:30,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:30,014 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2023-12-21 15:27:30,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 23 states have internal predecessors, (37), 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 15:27:30,014 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2023-12-21 15:27:30,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 15:27:30,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:30,015 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:30,022 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 15:27:30,222 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 15:27:30,223 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:30,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:30,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1469772052, now seen corresponding path program 2 times [2023-12-21 15:27:30,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:30,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470216089] [2023-12-21 15:27:30,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:27:30,224 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 15:27:30,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:30,225 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 15:27:30,226 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 15:27:30,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 15:27:30,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:27:30,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 15:27:30,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-21 15:27:30,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:27:30,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:30,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470216089] [2023-12-21 15:27:30,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470216089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:27:30,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:27:30,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 15:27:30,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609002052] [2023-12-21 15:27:30,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:27:30,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 15:27:30,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:30,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 15:27:30,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 15:27:30,312 INFO L87 Difference]: Start difference. First operand 55 states and 66 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 15:27:30,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:30,357 INFO L93 Difference]: Finished difference Result 97 states and 126 transitions. [2023-12-21 15:27:30,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 15:27:30,357 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 38 [2023-12-21 15:27:30,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:30,358 INFO L225 Difference]: With dead ends: 97 [2023-12-21 15:27:30,358 INFO L226 Difference]: Without dead ends: 69 [2023-12-21 15:27:30,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 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 15:27:30,359 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 13 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:30,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 62 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:27:30,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-21 15:27:30,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2023-12-21 15:27:30,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 58 states have internal predecessors, (71), 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 15:27:30,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2023-12-21 15:27:30,365 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 38 [2023-12-21 15:27:30,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:30,365 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2023-12-21 15:27:30,365 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 15:27:30,366 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2023-12-21 15:27:30,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 15:27:30,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:30,366 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 15:27:30,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 15:27:30,568 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 15:27:30,569 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:30,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:30,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1131393921, now seen corresponding path program 1 times [2023-12-21 15:27:30,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:30,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593110225] [2023-12-21 15:27:30,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:30,570 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 15:27:30,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:30,571 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 15:27:30,571 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 15:27:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:30,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 15:27:30,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:30,926 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 15:27:30,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:32,083 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 15:27:32,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:32,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593110225] [2023-12-21 15:27:32,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593110225] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:32,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:32,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 15:27:32,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251243022] [2023-12-21 15:27:32,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:32,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 15:27:32,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:32,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 15:27:32,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 15:27:32,087 INFO L87 Difference]: Start difference. First operand 63 states and 77 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 15:27:37,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:37,447 INFO L93 Difference]: Finished difference Result 126 states and 177 transitions. [2023-12-21 15:27:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 15:27:37,448 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 15:27:37,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:37,448 INFO L225 Difference]: With dead ends: 126 [2023-12-21 15:27:37,448 INFO L226 Difference]: Without dead ends: 87 [2023-12-21 15:27:37,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 15:27:37,451 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:37,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 842 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 15:27:37,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-21 15:27:37,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-12-21 15:27:37,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.1585365853658536) internal successors, (95), 82 states have internal predecessors, (95), 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 15:27:37,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions. [2023-12-21 15:27:37,458 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 39 [2023-12-21 15:27:37,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:37,458 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 101 transitions. [2023-12-21 15:27:37,458 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 15:27:37,458 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions. [2023-12-21 15:27:37,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 15:27:37,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:37,459 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 15:27:37,476 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 (10)] Forceful destruction successful, exit code 0 [2023-12-21 15:27:37,662 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 15:27:37,662 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:37,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:37,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1522769409, now seen corresponding path program 2 times [2023-12-21 15:27:37,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:37,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995099478] [2023-12-21 15:27:37,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:27:37,664 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 15:27:37,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:37,665 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 15:27:37,671 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 15:27:37,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 15:27:37,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:27:37,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 15:27:37,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:37,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 15:27:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2023-12-21 15:27:37,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:27:37,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:37,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995099478] [2023-12-21 15:27:37,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995099478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:27:37,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:27:37,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 15:27:37,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937478230] [2023-12-21 15:27:37,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:27:37,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 15:27:37,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:37,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 15:27:37,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 15:27:37,854 INFO L87 Difference]: Start difference. First operand 87 states and 101 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 15:27:37,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:37,959 INFO L93 Difference]: Finished difference Result 99 states and 115 transitions. [2023-12-21 15:27:37,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 15:27:37,960 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 15:27:37,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:37,960 INFO L225 Difference]: With dead ends: 99 [2023-12-21 15:27:37,961 INFO L226 Difference]: Without dead ends: 97 [2023-12-21 15:27:37,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-21 15:27:37,961 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:37,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 148 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:27:37,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-21 15:27:37,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2023-12-21 15:27:37,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.1529411764705881) internal successors, (98), 86 states have internal predecessors, (98), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 15:27:37,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2023-12-21 15:27:37,970 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 63 [2023-12-21 15:27:37,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:37,971 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2023-12-21 15:27:37,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 15:27:37,971 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2023-12-21 15:27:37,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 15:27:37,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:37,972 INFO L195 NwaCegarLoop]: trace histogram [46, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:37,975 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 15:27:38,173 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 15:27:38,174 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:38,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:38,174 INFO L85 PathProgramCache]: Analyzing trace with hash -519997628, now seen corresponding path program 1 times [2023-12-21 15:27:38,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:38,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909342689] [2023-12-21 15:27:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:38,175 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 15:27:38,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:38,176 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 15:27:38,179 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 15:27:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:38,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 15:27:38,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 15:27:39,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 2 proven. 1081 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 15:27:43,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:43,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909342689] [2023-12-21 15:27:43,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909342689] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:43,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:43,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 49] total 96 [2023-12-21 15:27:43,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931303475] [2023-12-21 15:27:43,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:43,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 15:27:43,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:43,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 15:27:43,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 15:27:43,731 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand has 96 states, 96 states have (on average 1.2083333333333333) internal successors, (116), 96 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 15:28:28,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:28:28,409 INFO L93 Difference]: Finished difference Result 184 states and 259 transitions. [2023-12-21 15:28:28,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 15:28:28,409 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.2083333333333333) internal successors, (116), 96 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2023-12-21 15:28:28,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:28:28,411 INFO L225 Difference]: With dead ends: 184 [2023-12-21 15:28:28,411 INFO L226 Difference]: Without dead ends: 140 [2023-12-21 15:28:28,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 48.3s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 15:28:28,415 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 2543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 15:28:28,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1682 Invalid, 2543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 15:28:28,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-21 15:28:28,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-12-21 15:28:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 133 states have (on average 1.0977443609022557) internal successors, (146), 134 states have internal predecessors, (146), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 15:28:28,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2023-12-21 15:28:28,424 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 70 [2023-12-21 15:28:28,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:28:28,424 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2023-12-21 15:28:28,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.2083333333333333) internal successors, (116), 96 states have internal predecessors, (116), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 15:28:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2023-12-21 15:28:28,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 15:28:28,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:28:28,429 INFO L195 NwaCegarLoop]: trace histogram [94, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:28:28,436 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 (12)] Forceful destruction successful, exit code 0 [2023-12-21 15:28:28,634 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 15:28:28,634 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:28:28,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:28:28,635 INFO L85 PathProgramCache]: Analyzing trace with hash -66682300, now seen corresponding path program 2 times [2023-12-21 15:28:28,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:28:28,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681649512] [2023-12-21 15:28:28,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:28:28,635 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 15:28:28,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:28:28,637 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 15:28:28,637 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 15:28:28,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 15:28:28,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:28:28,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-21 15:28:28,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:28:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4470 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 15:28:32,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:28:50,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4470 backedges. 2 proven. 4465 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 15:28:50,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:28:50,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681649512] [2023-12-21 15:28:50,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681649512] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:28:50,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:28:50,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 97] total 192 [2023-12-21 15:28:50,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069436433] [2023-12-21 15:28:50,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:28:50,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 15:28:50,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:28:50,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 15:28:50,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 15:28:50,359 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 192 states, 192 states have (on average 1.1041666666666667) internal successors, (212), 192 states have internal predecessors, (212), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 15:36:24,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:36:24,239 INFO L93 Difference]: Finished difference Result 280 states and 403 transitions. [2023-12-21 15:36:24,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-21 15:36:24,239 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.1041666666666667) internal successors, (212), 192 states have internal predecessors, (212), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 118 [2023-12-21 15:36:24,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:36:24,241 INFO L225 Difference]: With dead ends: 280 [2023-12-21 15:36:24,241 INFO L226 Difference]: Without dead ends: 236 [2023-12-21 15:36:24,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 469.7s TimeCoverageRelationStatistics Valid=27454, Invalid=54056, Unknown=0, NotChecked=0, Total=81510 [2023-12-21 15:36:24,246 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 3360 mSDsCounter, 0 mSdLazyCounter, 9699 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3397 SdHoareTripleChecker+Invalid, 9700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-21 15:36:24,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3397 Invalid, 9700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9699 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-21 15:36:24,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-21 15:36:24,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2023-12-21 15:36:24,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 229 states have (on average 1.056768558951965) internal successors, (242), 230 states have internal predecessors, (242), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 15:36:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 250 transitions. [2023-12-21 15:36:24,286 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 250 transitions. Word has length 118 [2023-12-21 15:36:24,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:36:24,287 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 250 transitions. [2023-12-21 15:36:24,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.1041666666666667) internal successors, (212), 192 states have internal predecessors, (212), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 15:36:24,288 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 250 transitions. [2023-12-21 15:36:24,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-21 15:36:24,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:36:24,289 INFO L195 NwaCegarLoop]: trace histogram [190, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:36:24,299 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 (13)] Forceful destruction successful, exit code 0 [2023-12-21 15:36:24,497 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 15:36:24,497 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:36:24,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:36:24,497 INFO L85 PathProgramCache]: Analyzing trace with hash 15374404, now seen corresponding path program 3 times [2023-12-21 15:36:24,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:36:24,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057231885] [2023-12-21 15:36:24,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 15:36:24,498 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 15:36:24,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:36:24,499 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 15:36:24,499 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 15:36:24,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 15:36:24,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:36:24,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 15:36:24,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:36:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 18150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18149 trivial. 0 not checked. [2023-12-21 15:36:24,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:36:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 18150 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 18147 trivial. 0 not checked. [2023-12-21 15:36:24,722 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:36:24,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057231885] [2023-12-21 15:36:24,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057231885] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:36:24,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:36:24,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2023-12-21 15:36:24,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766265346] [2023-12-21 15:36:24,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:36:24,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 15:36:24,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:36:24,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 15:36:24,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 15:36:24,724 INFO L87 Difference]: Start difference. First operand 236 states and 250 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 15:36:24,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:36:24,895 INFO L93 Difference]: Finished difference Result 355 states and 419 transitions. [2023-12-21 15:36:24,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 15:36:24,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 214 [2023-12-21 15:36:24,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:36:24,898 INFO L225 Difference]: With dead ends: 355 [2023-12-21 15:36:24,898 INFO L226 Difference]: Without dead ends: 318 [2023-12-21 15:36:24,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-12-21 15:36:24,899 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 122 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:36:24,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 115 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:36:24,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-12-21 15:36:24,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 253. [2023-12-21 15:36:24,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 246 states have (on average 1.0975609756097562) internal successors, (270), 247 states have internal predecessors, (270), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 15:36:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 278 transitions. [2023-12-21 15:36:24,914 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 278 transitions. Word has length 214 [2023-12-21 15:36:24,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:36:24,914 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 278 transitions. [2023-12-21 15:36:24,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 15:36:24,914 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 278 transitions. [2023-12-21 15:36:24,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-21 15:36:24,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:36:24,915 INFO L195 NwaCegarLoop]: trace histogram [190, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:36:24,920 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 (14)] Forceful destruction successful, exit code 0 [2023-12-21 15:36:25,117 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 15:36:25,118 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:36:25,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:36:25,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1036442758, now seen corresponding path program 1 times [2023-12-21 15:36:25,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:36:25,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436683769] [2023-12-21 15:36:25,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:36:25,119 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 15:36:25,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:36:25,121 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 15:36:25,121 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 (15)] Waiting until timeout for monitored process [2023-12-21 15:36:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:36:25,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-21 15:36:25,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:36:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 18150 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 15:36:37,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:37:52,638 INFO L134 CoverageAnalysis]: Checked inductivity of 18150 backedges. 2 proven. 18145 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 15:37:52,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:37:52,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436683769] [2023-12-21 15:37:52,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436683769] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:37:52,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:37:52,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 193] total 384 [2023-12-21 15:37:52,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679680225] [2023-12-21 15:37:52,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:37:52,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-12-21 15:37:52,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:37:52,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-12-21 15:37:52,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37246, Invalid=109826, Unknown=0, NotChecked=0, Total=147072 [2023-12-21 15:37:52,650 INFO L87 Difference]: Start difference. First operand 253 states and 278 transitions. Second operand has 384 states, 384 states have (on average 1.0520833333333333) internal successors, (404), 384 states have internal predecessors, (404), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 15:38:36,062 WARN L293 SmtUtils]: Spent 8.09s 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 15:38:59,823 WARN L293 SmtUtils]: Spent 8.02s 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 15:39:27,284 WARN L293 SmtUtils]: Spent 8.75s 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) [2023-12-21 15:39:56,827 WARN L293 SmtUtils]: Spent 8.26s on a formula simplification. DAG size of input: 565 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 15:40:25,618 WARN L293 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 562 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 15:40:56,209 WARN L293 SmtUtils]: Spent 8.85s on a formula simplification. DAG size of input: 559 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 15:41:27,626 WARN L293 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 556 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 15:41:57,244 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 15:41:57,244 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 15:41:58,260 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 15:41:58,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2023-12-21 15:41:58,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 281.3s TimeCoverageRelationStatistics Valid=39934, Invalid=112556, Unknown=0, NotChecked=0, Total=152490 [2023-12-21 15:41:58,298 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36680 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2023-12-21 15:41:58,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36681 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 36680 Invalid, 0 Unknown, 0 Unchecked, 17.7s Time] [2023-12-21 15:41:58,300 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 15:41:58,300 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (253states) and FLOYD_HOARE automaton (currently 200 states, 384 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. [2023-12-21 15:41:58,307 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 2, 1, 1, 1] [2023-12-21 15:41:58,309 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 15:41:58,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 03:41:58 BoogieIcfgContainer [2023-12-21 15:41:58,313 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 15:41:58,314 INFO L158 Benchmark]: Toolchain (without parser) took 872519.59ms. Allocated memory was 269.5MB in the beginning and 324.0MB in the end (delta: 54.5MB). Free memory was 212.9MB in the beginning and 74.4MB in the end (delta: 138.4MB). Peak memory consumption was 220.4MB. Max. memory is 8.0GB. [2023-12-21 15:41:58,314 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 224.4MB. Free memory is still 169.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 15:41:58,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.65ms. Allocated memory is still 269.5MB. Free memory was 212.4MB in the beginning and 200.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 15:41:58,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.42ms. Allocated memory is still 269.5MB. Free memory was 200.4MB in the beginning and 198.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 15:41:58,314 INFO L158 Benchmark]: Boogie Preprocessor took 29.52ms. Allocated memory is still 269.5MB. Free memory was 198.8MB in the beginning and 196.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 15:41:58,314 INFO L158 Benchmark]: RCFGBuilder took 326.14ms. Allocated memory is still 269.5MB. Free memory was 196.2MB in the beginning and 179.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-21 15:41:58,315 INFO L158 Benchmark]: TraceAbstraction took 871906.75ms. Allocated memory was 269.5MB in the beginning and 324.0MB in the end (delta: 54.5MB). Free memory was 178.9MB in the beginning and 74.4MB in the end (delta: 104.4MB). Peak memory consumption was 186.9MB. Max. memory is 8.0GB. [2023-12-21 15:41:58,315 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2023-12-21 15:41:58,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 224.4MB. Free memory is still 169.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 201.65ms. Allocated memory is still 269.5MB. Free memory was 212.4MB in the beginning and 200.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.42ms. Allocated memory is still 269.5MB. Free memory was 200.4MB in the beginning and 198.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.52ms. Allocated memory is still 269.5MB. Free memory was 198.8MB in the beginning and 196.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 326.14ms. Allocated memory is still 269.5MB. Free memory was 196.2MB in the beginning and 179.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 871906.75ms. Allocated memory was 269.5MB in the beginning and 324.0MB in the end (delta: 54.5MB). Free memory was 178.9MB in the beginning and 74.4MB in the end (delta: 104.4MB). Peak memory consumption was 186.9MB. 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 (253states) and FLOYD_HOARE automaton (currently 200 states, 384 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 871.9s, OverallIterations: 14, TraceHistogramMax: 190, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 751.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 210 SdHoareTripleChecker+Valid, 24.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 199 mSDsluCounter, 7434 SdHoareTripleChecker+Invalid, 21.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6998 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50291 IncrementalHoareTripleChecker+Invalid, 50326 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 436 mSDtfsCounter, 50291 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1753 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 957 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5745 ImplicationChecksByTransitivity, 806.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=253occurred in iteration=13, InterpolantAutomatonStates: 414, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 108 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 116.2s InterpolantComputationTime, 871 NumberOfCodeBlocks, 595 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1559 ConstructedInterpolants, 0 QuantifiedInterpolants, 3894 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2459 ConjunctsInSsa, 403 ConjunctsInUnsatCore, 22 InterpolantComputations, 6 PerfectInterpolantSequences, 37733/85755 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