/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-patterns/array27_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 19:38:07,532 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 19:38:07,611 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 19:38:07,617 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 19:38:07,617 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 19:38:07,644 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 19:38:07,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 19:38:07,644 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 19:38:07,645 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 19:38:07,645 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 19:38:07,645 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 19:38:07,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 19:38:07,646 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 19:38:07,646 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 19:38:07,647 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 19:38:07,647 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 19:38:07,647 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 19:38:07,647 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 19:38:07,648 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 19:38:07,652 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 19:38:07,657 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 19:38:07,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 19:38:07,658 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 19:38:07,658 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 19:38:07,658 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 19:38:07,658 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 19:38:07,658 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 19:38:07,658 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 19:38:07,658 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 19:38:07,659 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 19:38:07,659 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 19:38:07,660 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 19:38:07,660 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 19:38:07,660 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 19:38:07,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 19:38:07,660 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 19:38:07,660 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 19:38:07,660 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 19:38:07,660 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 19:38:07,661 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 19:38:07,661 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 19:38:07,661 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 19:38:07,661 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 19:38:07,661 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 19:38:07,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 19:38:07,662 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 19:38:07,662 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 19:38:07,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 19:38:07,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 19:38:07,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 19:38:07,891 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 19:38:07,891 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 19:38:07,892 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array27_pattern.c [2023-12-21 19:38:08,896 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 19:38:09,037 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 19:38:09,037 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array27_pattern.c [2023-12-21 19:38:09,042 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ce19560/aa268de9eade4d6d91eae0d3b25c00f6/FLAGce230b841 [2023-12-21 19:38:09,051 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ce19560/aa268de9eade4d6d91eae0d3b25c00f6 [2023-12-21 19:38:09,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 19:38:09,054 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 19:38:09,055 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 19:38:09,055 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 19:38:09,058 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 19:38:09,058 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 07:38:09" (1/1) ... [2023-12-21 19:38:09,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c02bcae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:38:09, skipping insertion in model container [2023-12-21 19:38:09,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 07:38:09" (1/1) ... [2023-12-21 19:38:09,074 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 19:38:09,192 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array27_pattern.c[1253,1266] [2023-12-21 19:38:09,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 19:38:09,219 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 19:38:09,230 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array27_pattern.c[1253,1266] [2023-12-21 19:38:09,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 19:38:09,251 INFO L206 MainTranslator]: Completed translation [2023-12-21 19:38:09,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:38:09 WrapperNode [2023-12-21 19:38:09,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 19:38:09,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 19:38:09,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 19:38:09,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 19:38:09,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:38:09" (1/1) ... [2023-12-21 19:38:09,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:38:09" (1/1) ... [2023-12-21 19:38:09,282 INFO L138 Inliner]: procedures = 18, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-12-21 19:38:09,283 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 19:38:09,284 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 19:38:09,284 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 19:38:09,284 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 19:38:09,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:38:09" (1/1) ... [2023-12-21 19:38:09,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:38:09" (1/1) ... [2023-12-21 19:38:09,298 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:38:09" (1/1) ... [2023-12-21 19:38:09,309 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2023-12-21 19:38:09,309 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:38:09" (1/1) ... [2023-12-21 19:38:09,309 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:38:09" (1/1) ... [2023-12-21 19:38:09,316 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:38:09" (1/1) ... [2023-12-21 19:38:09,319 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:38:09" (1/1) ... [2023-12-21 19:38:09,320 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:38:09" (1/1) ... [2023-12-21 19:38:09,321 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:38:09" (1/1) ... [2023-12-21 19:38:09,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 19:38:09,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 19:38:09,325 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 19:38:09,325 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 19:38:09,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:38:09" (1/1) ... [2023-12-21 19:38:09,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 19:38:09,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 19:38:09,354 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 19:38:09,360 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 19:38:09,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 19:38:09,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 19:38:09,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 19:38:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 19:38:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 19:38:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 19:38:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 19:38:09,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 19:38:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 19:38:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 19:38:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 19:38:09,462 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 19:38:09,463 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 19:38:09,726 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 19:38:09,760 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 19:38:09,760 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-21 19:38:09,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 07:38:09 BoogieIcfgContainer [2023-12-21 19:38:09,761 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 19:38:09,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 19:38:09,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 19:38:09,764 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 19:38:09,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 07:38:09" (1/3) ... [2023-12-21 19:38:09,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d7c90d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 07:38:09, skipping insertion in model container [2023-12-21 19:38:09,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:38:09" (2/3) ... [2023-12-21 19:38:09,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d7c90d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 07:38:09, skipping insertion in model container [2023-12-21 19:38:09,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 07:38:09" (3/3) ... [2023-12-21 19:38:09,766 INFO L112 eAbstractionObserver]: Analyzing ICFG array27_pattern.c [2023-12-21 19:38:09,778 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 19:38:09,778 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 19:38:09,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 19:38:09,811 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;@6e3f502, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 19:38:09,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 19:38:09,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:38:09,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 19:38:09,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:38:09,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:38:09,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:38:09,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:38:09,823 INFO L85 PathProgramCache]: Analyzing trace with hash 77099514, now seen corresponding path program 1 times [2023-12-21 19:38:09,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:38:09,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567069980] [2023-12-21 19:38:09,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:38:09,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:38:09,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:38:09,850 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 19:38:09,879 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 19:38:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:38:09,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 19:38:09,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:38:09,992 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 19:38:09,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:38:09,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:38:09,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567069980] [2023-12-21 19:38:09,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567069980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:38:09,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:38:09,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 19:38:09,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479213365] [2023-12-21 19:38:09,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:38:10,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 19:38:10,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:38:10,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 19:38:10,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 19:38:10,039 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:38:10,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:38:10,087 INFO L93 Difference]: Finished difference Result 34 states and 53 transitions. [2023-12-21 19:38:10,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 19:38:10,089 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-21 19:38:10,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:38:10,094 INFO L225 Difference]: With dead ends: 34 [2023-12-21 19:38:10,095 INFO L226 Difference]: Without dead ends: 16 [2023-12-21 19:38:10,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 19:38:10,099 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 19:38:10,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 19:38:10,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-21 19:38:10,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-21 19:38:10,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:38:10,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2023-12-21 19:38:10,124 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2023-12-21 19:38:10,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:38:10,125 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2023-12-21 19:38:10,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:38:10,125 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-12-21 19:38:10,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 19:38:10,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:38:10,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:38:10,132 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 19:38:10,332 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 19:38:10,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:38:10,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:38:10,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1391253823, now seen corresponding path program 1 times [2023-12-21 19:38:10,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:38:10,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641755910] [2023-12-21 19:38:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:38:10,337 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 19:38:10,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:38:10,342 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 19:38:10,343 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 19:38:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:38:10,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 19:38:10,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:38:10,666 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 19:38:10,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:38:10,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:38:10,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641755910] [2023-12-21 19:38:10,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641755910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:38:10,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:38:10,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 19:38:10,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952339325] [2023-12-21 19:38:10,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:38:10,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 19:38:10,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:38:10,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 19:38:10,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 19:38:10,669 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:38:11,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:38:11,033 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2023-12-21 19:38:11,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 19:38:11,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-21 19:38:11,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:38:11,046 INFO L225 Difference]: With dead ends: 32 [2023-12-21 19:38:11,046 INFO L226 Difference]: Without dead ends: 24 [2023-12-21 19:38:11,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 19:38:11,048 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 28 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 19:38:11,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 11 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 19:38:11,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-21 19:38:11,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2023-12-21 19:38:11,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:38:11,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-12-21 19:38:11,053 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 9 [2023-12-21 19:38:11,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:38:11,053 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-12-21 19:38:11,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:38:11,053 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-12-21 19:38:11,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-21 19:38:11,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:38:11,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:38:11,059 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 19:38:11,254 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 19:38:11,254 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:38:11,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:38:11,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1398282665, now seen corresponding path program 1 times [2023-12-21 19:38:11,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:38:11,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523510977] [2023-12-21 19:38:11,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:38:11,258 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 19:38:11,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:38:11,259 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 19:38:11,277 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 19:38:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:38:11,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 19:38:11,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:38:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 19:38:11,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:38:11,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:38:11,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523510977] [2023-12-21 19:38:11,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523510977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:38:11,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:38:11,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 19:38:11,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682773852] [2023-12-21 19:38:11,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:38:11,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 19:38:11,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:38:11,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 19:38:11,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 19:38:11,501 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:38:11,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:38:11,787 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2023-12-21 19:38:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 19:38:11,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 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 19:38:11,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:38:11,799 INFO L225 Difference]: With dead ends: 36 [2023-12-21 19:38:11,799 INFO L226 Difference]: Without dead ends: 22 [2023-12-21 19:38:11,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 19:38:11,801 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 25 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 19:38:11,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 15 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 19:38:11,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-21 19:38:11,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2023-12-21 19:38:11,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:38:11,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-12-21 19:38:11,806 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 15 [2023-12-21 19:38:11,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:38:11,806 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-12-21 19:38:11,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:38:11,806 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-12-21 19:38:11,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-21 19:38:11,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:38:11,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:38:11,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-21 19:38:12,013 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 19:38:12,013 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:38:12,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:38:12,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1830707515, now seen corresponding path program 1 times [2023-12-21 19:38:12,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:38:12,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980100529] [2023-12-21 19:38:12,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:38:12,015 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 19:38:12,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:38:12,019 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 19:38:12,062 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 19:38:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:38:12,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 19:38:12,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:38:12,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 19:38:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 19:38:12,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:38:39,041 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 37 treesize of output 35 [2023-12-21 19:38:39,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 70 treesize of output 68 [2023-12-21 19:39:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 19:39:12,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:39:12,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980100529] [2023-12-21 19:39:12,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980100529] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:39:12,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:39:12,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 19:39:12,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342770980] [2023-12-21 19:39:12,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:39:12,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 19:39:12,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:39:12,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 19:39:12,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-12-21 19:39:12,401 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 23 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:40:08,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-21 19:40:13,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:40:13,571 INFO L93 Difference]: Finished difference Result 88 states and 115 transitions. [2023-12-21 19:40:13,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 19:40:13,571 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-21 19:40:13,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:40:13,573 INFO L225 Difference]: With dead ends: 88 [2023-12-21 19:40:13,574 INFO L226 Difference]: Without dead ends: 68 [2023-12-21 19:40:13,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 87.5s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 19:40:13,575 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 180 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2023-12-21 19:40:13,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 55 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 477 Invalid, 1 Unknown, 0 Unchecked, 22.2s Time] [2023-12-21 19:40:13,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-21 19:40:13,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 53. [2023-12-21 19:40:13,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 52 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:40:13,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2023-12-21 19:40:13,598 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 19 [2023-12-21 19:40:13,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:40:13,598 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2023-12-21 19:40:13,598 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:40:13,598 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2023-12-21 19:40:13,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 19:40:13,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:40:13,599 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:40:13,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-21 19:40:13,804 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 19:40:13,805 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:40:13,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:40:13,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1647128868, now seen corresponding path program 1 times [2023-12-21 19:40:13,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:40:13,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212783576] [2023-12-21 19:40:13,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:40:13,806 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 19:40:13,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:40:13,809 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 19:40:13,812 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 19:40:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:40:13,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 19:40:13,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:40:14,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 19:40:14,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:40:15,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 19:40:15,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:40:15,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212783576] [2023-12-21 19:40:15,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212783576] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:40:15,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:40:15,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2023-12-21 19:40:15,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865430599] [2023-12-21 19:40:15,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:40:15,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 19:40:15,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:40:15,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 19:40:15,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-12-21 19:40:15,074 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:40:18,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:40:18,796 INFO L93 Difference]: Finished difference Result 162 states and 219 transitions. [2023-12-21 19:40:18,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 19:40:18,815 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-21 19:40:18,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:40:18,816 INFO L225 Difference]: With dead ends: 162 [2023-12-21 19:40:18,816 INFO L226 Difference]: Without dead ends: 115 [2023-12-21 19:40:18,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 19:40:18,817 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 131 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-21 19:40:18,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 49 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-21 19:40:18,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-21 19:40:18,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87. [2023-12-21 19:40:18,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.3255813953488371) internal successors, (114), 86 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:40:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 114 transitions. [2023-12-21 19:40:18,840 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 114 transitions. Word has length 22 [2023-12-21 19:40:18,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:40:18,840 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 114 transitions. [2023-12-21 19:40:18,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:40:18,840 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 114 transitions. [2023-12-21 19:40:18,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 19:40:18,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:40:18,841 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:40:18,860 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 19:40:19,047 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 19:40:19,047 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:40:19,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:40:19,048 INFO L85 PathProgramCache]: Analyzing trace with hash 818242032, now seen corresponding path program 2 times [2023-12-21 19:40:19,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:40:19,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489284005] [2023-12-21 19:40:19,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 19:40:19,048 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 19:40:19,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:40:19,049 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 19:40:19,066 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 19:40:19,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 19:40:19,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:40:19,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 19:40:19,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:40:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 19:40:19,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:40:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 19:40:20,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:40:20,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489284005] [2023-12-21 19:40:20,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489284005] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:40:20,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:40:20,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-21 19:40:20,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217088831] [2023-12-21 19:40:20,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:40:20,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 19:40:20,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:40:20,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 19:40:20,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-12-21 19:40:20,206 INFO L87 Difference]: Start difference. First operand 87 states and 114 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:40:21,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:40:21,451 INFO L93 Difference]: Finished difference Result 142 states and 185 transitions. [2023-12-21 19:40:21,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 19:40:21,470 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 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 19:40:21,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:40:21,473 INFO L225 Difference]: With dead ends: 142 [2023-12-21 19:40:21,473 INFO L226 Difference]: Without dead ends: 128 [2023-12-21 19:40:21,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-12-21 19:40:21,476 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 97 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 19:40:21,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 39 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 19:40:21,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-21 19:40:21,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 89. [2023-12-21 19:40:21,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.3181818181818181) internal successors, (116), 88 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:40:21,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 116 transitions. [2023-12-21 19:40:21,513 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 116 transitions. Word has length 23 [2023-12-21 19:40:21,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:40:21,513 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 116 transitions. [2023-12-21 19:40:21,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:40:21,515 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 116 transitions. [2023-12-21 19:40:21,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-21 19:40:21,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:40:21,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:40:21,521 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 19:40:21,717 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 19:40:21,717 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:40:21,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:40:21,718 INFO L85 PathProgramCache]: Analyzing trace with hash 43612553, now seen corresponding path program 3 times [2023-12-21 19:40:21,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:40:21,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769882115] [2023-12-21 19:40:21,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 19:40:21,718 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 19:40:21,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:40:21,720 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 19:40:21,720 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 19:40:21,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 19:40:21,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:40:21,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 19:40:21,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:40:22,391 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 19:40:22,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:40:22,895 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 19:40:22,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:40:22,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769882115] [2023-12-21 19:40:22,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769882115] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:40:22,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:40:22,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-21 19:40:22,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697585142] [2023-12-21 19:40:22,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:40:22,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 19:40:22,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:40:22,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 19:40:22,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-12-21 19:40:22,896 INFO L87 Difference]: Start difference. First operand 89 states and 116 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:40:25,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:40:25,833 INFO L93 Difference]: Finished difference Result 168 states and 222 transitions. [2023-12-21 19:40:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 19:40:25,834 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-21 19:40:25,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:40:25,835 INFO L225 Difference]: With dead ends: 168 [2023-12-21 19:40:25,835 INFO L226 Difference]: Without dead ends: 119 [2023-12-21 19:40:25,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=301, Invalid=889, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 19:40:25,836 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 191 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 19:40:25,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 16 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 19:40:25,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-21 19:40:25,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 78. [2023-12-21 19:40:25,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.2987012987012987) internal successors, (100), 77 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:40:25,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2023-12-21 19:40:25,852 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 29 [2023-12-21 19:40:25,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:40:25,853 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2023-12-21 19:40:25,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:40:25,853 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2023-12-21 19:40:25,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-21 19:40:25,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:40:25,853 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:40:25,860 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 19:40:26,054 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 19:40:26,056 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:40:26,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:40:26,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1433594960, now seen corresponding path program 2 times [2023-12-21 19:40:26,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:40:26,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82133590] [2023-12-21 19:40:26,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 19:40:26,063 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 19:40:26,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:40:26,064 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 19:40:26,065 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 19:40:26,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 19:40:26,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:40:26,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 19:40:26,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:40:26,884 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 19:40:26,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:40:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 19:40:27,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:40:27,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82133590] [2023-12-21 19:40:27,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82133590] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:40:27,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:40:27,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2023-12-21 19:40:27,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050507170] [2023-12-21 19:40:27,562 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:40:27,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 19:40:27,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:40:27,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 19:40:27,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-12-21 19:40:27,563 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:40:29,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:40:29,133 INFO L93 Difference]: Finished difference Result 155 states and 203 transitions. [2023-12-21 19:40:29,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 19:40:29,133 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-21 19:40:29,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:40:29,134 INFO L225 Difference]: With dead ends: 155 [2023-12-21 19:40:29,134 INFO L226 Difference]: Without dead ends: 141 [2023-12-21 19:40:29,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=245, Invalid=625, Unknown=0, NotChecked=0, Total=870 [2023-12-21 19:40:29,135 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 176 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 19:40:29,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 35 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 19:40:29,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-21 19:40:29,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 99. [2023-12-21 19:40:29,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 98 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:40:29,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 128 transitions. [2023-12-21 19:40:29,178 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 128 transitions. Word has length 31 [2023-12-21 19:40:29,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:40:29,178 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 128 transitions. [2023-12-21 19:40:29,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:40:29,178 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 128 transitions. [2023-12-21 19:40:29,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 19:40:29,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:40:29,179 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:40:29,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-21 19:40:29,384 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 19:40:29,384 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:40:29,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:40:29,384 INFO L85 PathProgramCache]: Analyzing trace with hash -40949957, now seen corresponding path program 3 times [2023-12-21 19:40:29,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:40:29,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418284398] [2023-12-21 19:40:29,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 19:40:29,385 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 19:40:29,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:40:29,386 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 19:40:29,397 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 19:40:29,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 19:40:29,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:40:29,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 19:40:29,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:40:30,165 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 19:40:30,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:40:30,690 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 19:40:30,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:40:30,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418284398] [2023-12-21 19:40:30,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418284398] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:40:30,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:40:30,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-12-21 19:40:30,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783439278] [2023-12-21 19:40:30,691 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:40:30,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 19:40:30,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:40:30,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 19:40:30,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2023-12-21 19:40:30,693 INFO L87 Difference]: Start difference. First operand 99 states and 128 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:40:34,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:40:34,697 INFO L93 Difference]: Finished difference Result 245 states and 328 transitions. [2023-12-21 19:40:34,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 19:40:34,723 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-21 19:40:34,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:40:34,724 INFO L225 Difference]: With dead ends: 245 [2023-12-21 19:40:34,724 INFO L226 Difference]: Without dead ends: 170 [2023-12-21 19:40:34,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=478, Invalid=1162, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 19:40:34,725 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 211 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 19:40:34,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 30 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 19:40:34,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-21 19:40:34,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 126. [2023-12-21 19:40:34,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.296) internal successors, (162), 125 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:40:34,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 162 transitions. [2023-12-21 19:40:34,768 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 162 transitions. Word has length 37 [2023-12-21 19:40:34,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:40:34,772 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 162 transitions. [2023-12-21 19:40:34,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:40:34,772 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 162 transitions. [2023-12-21 19:40:34,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 19:40:34,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:40:34,776 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:40:34,787 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 19:40:34,985 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 19:40:34,985 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:40:34,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:40:34,986 INFO L85 PathProgramCache]: Analyzing trace with hash -637697851, now seen corresponding path program 4 times [2023-12-21 19:40:34,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:40:34,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186492981] [2023-12-21 19:40:34,986 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 19:40:34,986 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 19:40:34,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:40:34,987 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 19:40:34,990 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 19:40:35,442 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 19:40:35,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:40:35,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-21 19:40:35,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:40:35,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 19:40:36,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-12-21 19:40:36,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 19:40:36,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 19:40:36,746 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:40:36,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2023-12-21 19:40:36,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 19:40:36,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 19:40:36,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 19:40:36,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 19:40:36,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:40:36,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2023-12-21 19:40:38,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 19:40:38,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 19:40:38,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 19:40:38,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 19:40:38,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:40:38,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 13 [2023-12-21 19:40:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 19:40:38,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:45:03,358 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 289 treesize of output 281 [2023-12-21 19:45:06,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 19:45:06,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 510858140634 treesize of output 499583851528 [2023-12-21 19:47:34,073 WARN L293 SmtUtils]: Spent 2.46m on a formula simplification. DAG size of input: 6254 DAG size of output: 1474 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:50:06,101 WARN L293 SmtUtils]: Spent 6.81s on a formula simplification. DAG size of input: 20 DAG size of output: 1 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 19:50:40,604 WARN L293 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 20 DAG size of output: 1 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-12-21 19:52:50,707 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 (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 19:52:50,707 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 19:52:51,717 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 19:52:51,908 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-21 19:52:51,933 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 137 [2023-12-21 19:52:51,936 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 19:52:51,936 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 38 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while executing Executor. [2023-12-21 19:52:51,940 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1] [2023-12-21 19:52:51,942 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 19:52:51,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 07:52:51 BoogieIcfgContainer [2023-12-21 19:52:51,943 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 19:52:51,944 INFO L158 Benchmark]: Toolchain (without parser) took 882889.93ms. Allocated memory was 194.0MB in the beginning and 842.0MB in the end (delta: 648.0MB). Free memory was 144.6MB in the beginning and 333.4MB in the end (delta: -188.8MB). Peak memory consumption was 502.0MB. Max. memory is 8.0GB. [2023-12-21 19:52:51,944 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 194.0MB. Free memory is still 146.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 19:52:51,944 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.96ms. Allocated memory is still 194.0MB. Free memory was 144.6MB in the beginning and 132.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 19:52:51,944 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.79ms. Allocated memory is still 194.0MB. Free memory was 132.5MB in the beginning and 130.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 19:52:51,944 INFO L158 Benchmark]: Boogie Preprocessor took 40.12ms. Allocated memory is still 194.0MB. Free memory was 130.9MB in the beginning and 128.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 19:52:51,945 INFO L158 Benchmark]: RCFGBuilder took 436.28ms. Allocated memory is still 194.0MB. Free memory was 128.8MB in the beginning and 114.7MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-21 19:52:51,945 INFO L158 Benchmark]: TraceAbstraction took 882181.06ms. Allocated memory was 194.0MB in the beginning and 842.0MB in the end (delta: 648.0MB). Free memory was 113.6MB in the beginning and 333.4MB in the end (delta: -219.8MB). Peak memory consumption was 470.5MB. Max. memory is 8.0GB. [2023-12-21 19:52:51,946 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 194.0MB. Free memory is still 146.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 196.96ms. Allocated memory is still 194.0MB. Free memory was 144.6MB in the beginning and 132.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.79ms. Allocated memory is still 194.0MB. Free memory was 132.5MB in the beginning and 130.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.12ms. Allocated memory is still 194.0MB. Free memory was 130.9MB in the beginning and 128.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 436.28ms. Allocated memory is still 194.0MB. Free memory was 128.8MB in the beginning and 114.7MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 882181.06ms. Allocated memory was 194.0MB in the beginning and 842.0MB in the end (delta: 648.0MB). Free memory was 113.6MB in the beginning and 333.4MB in the end (delta: -219.8MB). Peak memory consumption was 470.5MB. 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: 32]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 32). Cancelled while NwaCegarLoop was analyzing trace of length 38 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 882.1s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 75.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 1039 SdHoareTripleChecker+Valid, 30.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1039 mSDsluCounter, 269 SdHoareTripleChecker+Invalid, 27.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 212 mSDsCounter, 303 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2099 IncrementalHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 303 mSolverCounterUnsat, 57 mSDtfsCounter, 2099 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 456 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1714 ImplicationChecksByTransitivity, 96.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=9, InterpolantAutomatonStates: 159, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 217 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 66.0s InterpolantComputationTime, 194 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 340 ConstructedInterpolants, 132 QuantifiedInterpolants, 3295 SizeOfPredicates, 37 NumberOfNonLiveVariables, 490 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 143/260 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