/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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-7.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 16:44:43,049 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 16:44:43,114 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 16:44:43,117 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 16:44:43,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 16:44:43,141 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 16:44:43,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 16:44:43,142 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 16:44:43,142 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 16:44:43,145 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 16:44:43,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 16:44:43,145 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 16:44:43,146 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 16:44:43,147 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 16:44:43,147 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 16:44:43,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 16:44:43,147 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 16:44:43,148 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 16:44:43,148 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 16:44:43,148 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 16:44:43,148 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 16:44:43,148 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 16:44:43,148 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 16:44:43,149 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 16:44:43,149 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 16:44:43,149 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 16:44:43,149 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 16:44:43,149 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 16:44:43,149 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 16:44:43,149 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 16:44:43,150 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 16:44:43,150 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 16:44:43,150 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 16:44:43,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 16:44:43,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 16:44:43,151 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 16:44:43,151 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 16:44:43,151 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 16:44:43,151 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 16:44:43,151 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 16:44:43,152 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 16:44:43,152 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 16:44:43,152 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 16:44:43,152 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 16:44:43,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 16:44:43,152 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 16:44:43,152 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 16:44:43,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 16:44:43,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 16:44:43,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 16:44:43,355 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 16:44:43,355 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 16:44:43,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-7.i [2023-12-23 16:44:44,484 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 16:44:44,642 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 16:44:44,643 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-7.i [2023-12-23 16:44:44,652 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d820b196d/b8c9e5bc03de4a029bd260fb41ec40d6/FLAG08b98653a [2023-12-23 16:44:44,662 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d820b196d/b8c9e5bc03de4a029bd260fb41ec40d6 [2023-12-23 16:44:44,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 16:44:44,665 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 16:44:44,666 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 16:44:44,666 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 16:44:44,669 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 16:44:44,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:44:44" (1/1) ... [2023-12-23 16:44:44,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a881fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:44:44, skipping insertion in model container [2023-12-23 16:44:44,670 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:44:44" (1/1) ... [2023-12-23 16:44:44,696 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 16:44:44,815 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-7.i[918,931] [2023-12-23 16:44:44,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 16:44:44,920 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 16:44:44,930 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-7.i[918,931] [2023-12-23 16:44:44,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 16:44:44,999 INFO L206 MainTranslator]: Completed translation [2023-12-23 16:44:45,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:44:45 WrapperNode [2023-12-23 16:44:45,000 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 16:44:45,001 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 16:44:45,001 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 16:44:45,001 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 16:44:45,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:44:45" (1/1) ... [2023-12-23 16:44:45,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:44:45" (1/1) ... [2023-12-23 16:44:45,045 INFO L138 Inliner]: procedures = 27, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 225 [2023-12-23 16:44:45,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 16:44:45,046 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 16:44:45,046 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 16:44:45,047 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 16:44:45,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:44:45" (1/1) ... [2023-12-23 16:44:45,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:44:45" (1/1) ... [2023-12-23 16:44:45,058 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:44:45" (1/1) ... [2023-12-23 16:44:45,078 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-23 16:44:45,083 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:44:45" (1/1) ... [2023-12-23 16:44:45,083 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:44:45" (1/1) ... [2023-12-23 16:44:45,092 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:44:45" (1/1) ... [2023-12-23 16:44:45,095 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:44:45" (1/1) ... [2023-12-23 16:44:45,102 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:44:45" (1/1) ... [2023-12-23 16:44:45,104 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:44:45" (1/1) ... [2023-12-23 16:44:45,119 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 16:44:45,120 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 16:44:45,120 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 16:44:45,120 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 16:44:45,121 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:44:45" (1/1) ... [2023-12-23 16:44:45,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 16:44:45,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 16:44:45,190 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) [2023-12-23 16:44:45,260 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 [2023-12-23 16:44:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 16:44:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 16:44:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 16:44:45,306 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 16:44:45,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 16:44:45,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 16:44:45,407 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 16:44:45,409 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 16:44:47,648 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 16:44:47,676 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 16:44:47,676 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 16:44:47,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:44:47 BoogieIcfgContainer [2023-12-23 16:44:47,677 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 16:44:47,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 16:44:47,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 16:44:47,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 16:44:47,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:44:44" (1/3) ... [2023-12-23 16:44:47,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23229d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:44:47, skipping insertion in model container [2023-12-23 16:44:47,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:44:45" (2/3) ... [2023-12-23 16:44:47,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23229d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:44:47, skipping insertion in model container [2023-12-23 16:44:47,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:44:47" (3/3) ... [2023-12-23 16:44:47,682 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-7.i [2023-12-23 16:44:47,694 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 16:44:47,694 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 16:44:47,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 16:44:47,729 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;@18fd40d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 16:44:47,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 16:44:47,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 57 states have internal predecessors, (78), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-23 16:44:47,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-23 16:44:47,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:44:47,744 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:44:47,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:44:47,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:44:47,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1150688908, now seen corresponding path program 1 times [2023-12-23 16:44:47,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:44:47,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356019602] [2023-12-23 16:44:47,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:44:47,764 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 [2023-12-23 16:44:47,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:44:47,782 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) [2023-12-23 16:44:47,818 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 [2023-12-23 16:44:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:44:48,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 16:44:48,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:44:48,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 968 proven. 0 refuted. 0 times theorem prover too weak. 1412 trivial. 0 not checked. [2023-12-23 16:44:48,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 16:44:48,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 16:44:48,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356019602] [2023-12-23 16:44:48,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356019602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 16:44:48,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 16:44:48,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 16:44:48,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981942919] [2023-12-23 16:44:48,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 16:44:48,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 16:44:48,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 16:44:48,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 16:44:48,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 16:44:48,400 INFO L87 Difference]: Start difference. First operand has 94 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 57 states have internal predecessors, (78), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2023-12-23 16:44:49,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 16:44:49,127 INFO L93 Difference]: Finished difference Result 185 states and 329 transitions. [2023-12-23 16:44:49,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 16:44:49,145 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 218 [2023-12-23 16:44:49,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 16:44:49,151 INFO L225 Difference]: With dead ends: 185 [2023-12-23 16:44:49,151 INFO L226 Difference]: Without dead ends: 92 [2023-12-23 16:44:49,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 16:44:49,156 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-23 16:44:49,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-23 16:44:49,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-23 16:44:49,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2023-12-23 16:44:49,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 55 states have internal predecessors, (73), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-23 16:44:49,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 143 transitions. [2023-12-23 16:44:49,212 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 143 transitions. Word has length 218 [2023-12-23 16:44:49,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 16:44:49,213 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 143 transitions. [2023-12-23 16:44:49,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2023-12-23 16:44:49,213 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 143 transitions. [2023-12-23 16:44:49,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-23 16:44:49,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:44:49,217 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:44:49,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-23 16:44:49,426 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 [2023-12-23 16:44:49,427 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:44:49,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:44:49,428 INFO L85 PathProgramCache]: Analyzing trace with hash 161108638, now seen corresponding path program 1 times [2023-12-23 16:44:49,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:44:49,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047551679] [2023-12-23 16:44:49,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:44:49,429 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 [2023-12-23 16:44:49,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:44:49,430 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) [2023-12-23 16:44:49,445 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 [2023-12-23 16:44:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:44:49,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 16:44:49,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:44:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-12-23 16:44:50,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 16:44:50,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 16:44:50,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047551679] [2023-12-23 16:44:50,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047551679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 16:44:50,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 16:44:50,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 16:44:50,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075491976] [2023-12-23 16:44:50,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 16:44:50,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 16:44:50,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 16:44:50,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 16:44:50,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:44:50,241 INFO L87 Difference]: Start difference. First operand 92 states and 143 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-23 16:44:51,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 16:44:51,185 INFO L93 Difference]: Finished difference Result 266 states and 416 transitions. [2023-12-23 16:44:51,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 16:44:51,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 218 [2023-12-23 16:44:51,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 16:44:51,188 INFO L225 Difference]: With dead ends: 266 [2023-12-23 16:44:51,188 INFO L226 Difference]: Without dead ends: 175 [2023-12-23 16:44:51,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:44:51,190 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 29 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-23 16:44:51,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 275 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-23 16:44:51,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-23 16:44:51,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 160. [2023-12-23 16:44:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 87 states have (on average 1.2298850574712643) internal successors, (107), 87 states have internal predecessors, (107), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-23 16:44:51,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 247 transitions. [2023-12-23 16:44:51,213 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 247 transitions. Word has length 218 [2023-12-23 16:44:51,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 16:44:51,214 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 247 transitions. [2023-12-23 16:44:51,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-23 16:44:51,214 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 247 transitions. [2023-12-23 16:44:51,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-12-23 16:44:51,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:44:51,217 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:44:51,238 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 [2023-12-23 16:44:51,429 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 [2023-12-23 16:44:51,430 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:44:51,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:44:51,431 INFO L85 PathProgramCache]: Analyzing trace with hash -320634417, now seen corresponding path program 1 times [2023-12-23 16:44:51,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:44:51,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836001996] [2023-12-23 16:44:51,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:44:51,432 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 [2023-12-23 16:44:51,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:44:51,434 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) [2023-12-23 16:44:51,435 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 [2023-12-23 16:44:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:44:51,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 16:44:51,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:44:52,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-12-23 16:44:52,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 16:44:52,210 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 16:44:52,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836001996] [2023-12-23 16:44:52,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836001996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 16:44:52,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 16:44:52,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 16:44:52,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428699762] [2023-12-23 16:44:52,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 16:44:52,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 16:44:52,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 16:44:52,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 16:44:52,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:44:52,212 INFO L87 Difference]: Start difference. First operand 160 states and 247 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-23 16:44:53,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 16:44:53,191 INFO L93 Difference]: Finished difference Result 263 states and 410 transitions. [2023-12-23 16:44:53,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 16:44:53,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 219 [2023-12-23 16:44:53,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 16:44:53,193 INFO L225 Difference]: With dead ends: 263 [2023-12-23 16:44:53,194 INFO L226 Difference]: Without dead ends: 172 [2023-12-23 16:44:53,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:44:53,195 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 21 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-23 16:44:53,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 276 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-23 16:44:53,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-23 16:44:53,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 163. [2023-12-23 16:44:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 90 states have (on average 1.2444444444444445) internal successors, (112), 90 states have internal predecessors, (112), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-23 16:44:53,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 252 transitions. [2023-12-23 16:44:53,228 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 252 transitions. Word has length 219 [2023-12-23 16:44:53,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 16:44:53,229 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 252 transitions. [2023-12-23 16:44:53,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-23 16:44:53,229 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 252 transitions. [2023-12-23 16:44:53,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-23 16:44:53,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:44:53,233 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:44:53,247 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 [2023-12-23 16:44:53,445 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 [2023-12-23 16:44:53,446 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:44:53,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:44:53,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1903216935, now seen corresponding path program 1 times [2023-12-23 16:44:53,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:44:53,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258265701] [2023-12-23 16:44:53,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:44:53,448 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 [2023-12-23 16:44:53,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:44:53,449 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) [2023-12-23 16:44:53,450 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 [2023-12-23 16:44:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:44:53,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 16:44:53,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:44:55,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-12-23 16:44:55,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 16:44:55,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 16:44:55,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258265701] [2023-12-23 16:44:55,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258265701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 16:44:55,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 16:44:55,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 16:44:55,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790085342] [2023-12-23 16:44:55,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 16:44:55,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 16:44:55,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 16:44:55,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 16:44:55,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:44:55,731 INFO L87 Difference]: Start difference. First operand 163 states and 252 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-23 16:44:57,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 16:44:57,562 INFO L93 Difference]: Finished difference Result 262 states and 406 transitions. [2023-12-23 16:44:57,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 16:44:57,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 220 [2023-12-23 16:44:57,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 16:44:57,567 INFO L225 Difference]: With dead ends: 262 [2023-12-23 16:44:57,568 INFO L226 Difference]: Without dead ends: 167 [2023-12-23 16:44:57,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:44:57,569 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 14 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-23 16:44:57,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 254 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-23 16:44:57,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-23 16:44:57,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2023-12-23 16:44:57,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 90 states have (on average 1.2333333333333334) internal successors, (111), 90 states have internal predecessors, (111), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-23 16:44:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 251 transitions. [2023-12-23 16:44:57,588 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 251 transitions. Word has length 220 [2023-12-23 16:44:57,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 16:44:57,588 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 251 transitions. [2023-12-23 16:44:57,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-23 16:44:57,589 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 251 transitions. [2023-12-23 16:44:57,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-23 16:44:57,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:44:57,590 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:44:57,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-23 16:44:57,807 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 [2023-12-23 16:44:57,808 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:44:57,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:44:57,808 INFO L85 PathProgramCache]: Analyzing trace with hash 89152661, now seen corresponding path program 1 times [2023-12-23 16:44:57,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:44:57,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489938394] [2023-12-23 16:44:57,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:44:57,809 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 [2023-12-23 16:44:57,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:44:57,811 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) [2023-12-23 16:44:57,812 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 [2023-12-23 16:44:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:44:58,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 16:44:58,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:44:58,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 984 proven. 27 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2023-12-23 16:44:58,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 16:44:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 75 proven. 27 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2023-12-23 16:44:58,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 16:44:58,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489938394] [2023-12-23 16:44:58,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489938394] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 16:44:58,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 16:44:58,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-23 16:44:58,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173602104] [2023-12-23 16:44:58,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 16:44:58,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-23 16:44:58,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 16:44:58,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-23 16:44:58,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-23 16:44:58,943 INFO L87 Difference]: Start difference. First operand 163 states and 251 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 4 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (70), 4 states have call predecessors, (70), 4 states have call successors, (70) [2023-12-23 16:45:01,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 16:45:03,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 16:45:03,641 INFO L93 Difference]: Finished difference Result 485 states and 739 transitions. [2023-12-23 16:45:03,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-23 16:45:03,642 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 4 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (70), 4 states have call predecessors, (70), 4 states have call successors, (70) Word has length 221 [2023-12-23 16:45:03,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 16:45:03,644 INFO L225 Difference]: With dead ends: 485 [2023-12-23 16:45:03,644 INFO L226 Difference]: Without dead ends: 393 [2023-12-23 16:45:03,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-23 16:45:03,646 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 327 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-23 16:45:03,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 571 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-23 16:45:03,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-12-23 16:45:03,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 323. [2023-12-23 16:45:03,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 187 states have (on average 1.267379679144385) internal successors, (237), 188 states have internal predecessors, (237), 129 states have call successors, (129), 6 states have call predecessors, (129), 6 states have return successors, (129), 128 states have call predecessors, (129), 129 states have call successors, (129) [2023-12-23 16:45:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 495 transitions. [2023-12-23 16:45:03,703 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 495 transitions. Word has length 221 [2023-12-23 16:45:03,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 16:45:03,706 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 495 transitions. [2023-12-23 16:45:03,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 4 states have call successors, (70), 3 states have call predecessors, (70), 5 states have return successors, (70), 4 states have call predecessors, (70), 4 states have call successors, (70) [2023-12-23 16:45:03,710 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 495 transitions. [2023-12-23 16:45:03,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-23 16:45:03,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:45:03,712 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:45:03,726 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 [2023-12-23 16:45:03,927 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 [2023-12-23 16:45:03,927 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:45:03,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:45:03,928 INFO L85 PathProgramCache]: Analyzing trace with hash 12699909, now seen corresponding path program 1 times [2023-12-23 16:45:03,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:45:03,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983727533] [2023-12-23 16:45:03,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:45:03,929 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 [2023-12-23 16:45:03,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:45:03,930 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) [2023-12-23 16:45:03,930 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 [2023-12-23 16:45:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:45:04,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 16:45:04,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:45:04,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-12-23 16:45:04,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 16:45:04,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 16:45:04,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983727533] [2023-12-23 16:45:04,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983727533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 16:45:04,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 16:45:04,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 16:45:04,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319304263] [2023-12-23 16:45:04,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 16:45:04,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 16:45:04,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 16:45:04,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 16:45:04,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:45:04,437 INFO L87 Difference]: Start difference. First operand 323 states and 495 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-23 16:45:05,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 16:45:06,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 16:45:06,586 INFO L93 Difference]: Finished difference Result 771 states and 1184 transitions. [2023-12-23 16:45:06,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 16:45:06,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 222 [2023-12-23 16:45:06,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 16:45:06,591 INFO L225 Difference]: With dead ends: 771 [2023-12-23 16:45:06,591 INFO L226 Difference]: Without dead ends: 524 [2023-12-23 16:45:06,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:45:06,592 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 103 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-23 16:45:06,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 270 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-23 16:45:06,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-12-23 16:45:06,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 513. [2023-12-23 16:45:06,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 299 states have (on average 1.274247491638796) internal successors, (381), 303 states have internal predecessors, (381), 203 states have call successors, (203), 10 states have call predecessors, (203), 10 states have return successors, (203), 199 states have call predecessors, (203), 203 states have call successors, (203) [2023-12-23 16:45:06,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 787 transitions. [2023-12-23 16:45:06,623 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 787 transitions. Word has length 222 [2023-12-23 16:45:06,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 16:45:06,623 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 787 transitions. [2023-12-23 16:45:06,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-23 16:45:06,623 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 787 transitions. [2023-12-23 16:45:06,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-23 16:45:06,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:45:06,625 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:45:06,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-23 16:45:06,839 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 [2023-12-23 16:45:06,839 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:45:06,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:45:06,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1023817159, now seen corresponding path program 1 times [2023-12-23 16:45:06,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:45:06,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434776903] [2023-12-23 16:45:06,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:45:06,840 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 [2023-12-23 16:45:06,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:45:06,845 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) [2023-12-23 16:45:06,864 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 [2023-12-23 16:45:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:45:07,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-23 16:45:07,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:45:27,230 WARN L293 SmtUtils]: Spent 8.64s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 16:45:46,674 WARN L293 SmtUtils]: Spent 8.66s on a formula simplification that was a NOOP. DAG size: 76 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 16:47:03,998 WARN L293 SmtUtils]: Spent 33.84s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 16:48:26,918 WARN L293 SmtUtils]: Spent 34.36s on a formula simplification that was a NOOP. DAG size: 84 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)