/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_fillercodesize_ps-cn-500_file-10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 04:18:52,977 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 04:18:53,066 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 04:18:53,072 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 04:18:53,073 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 04:18:53,090 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 04:18:53,092 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 04:18:53,092 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 04:18:53,093 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 04:18:53,094 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 04:18:53,094 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 04:18:53,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 04:18:53,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 04:18:53,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 04:18:53,095 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 04:18:53,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 04:18:53,096 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 04:18:53,096 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 04:18:53,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 04:18:53,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 04:18:53,097 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 04:18:53,098 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 04:18:53,098 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 04:18:53,098 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 04:18:53,099 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 04:18:53,099 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 04:18:53,099 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 04:18:53,099 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 04:18:53,099 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 04:18:53,100 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 04:18:53,101 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 04:18:53,101 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 04:18:53,101 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 04:18:53,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 04:18:53,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 04:18:53,102 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 04:18:53,102 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 04:18:53,102 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 04:18:53,102 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 04:18:53,102 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 04:18:53,102 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 04:18:53,103 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 04:18:53,103 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 04:18:53,103 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 04:18:53,103 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 04:18:53,103 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 04:18:53,104 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 04:18:53,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 04:18:53,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 04:18:53,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 04:18:53,372 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 04:18:53,372 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 04:18:53,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-10.i [2023-12-23 04:18:54,499 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 04:18:54,760 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 04:18:54,761 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-10.i [2023-12-23 04:18:54,781 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e6af8d79/8c6ebb97c61446f39d345f1d9c0ff19c/FLAG81b38eee5 [2023-12-23 04:18:54,802 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e6af8d79/8c6ebb97c61446f39d345f1d9c0ff19c [2023-12-23 04:18:54,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 04:18:54,807 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 04:18:54,808 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 04:18:54,808 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 04:18:54,812 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 04:18:54,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:18:54" (1/1) ... [2023-12-23 04:18:54,814 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a345441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:18:54, skipping insertion in model container [2023-12-23 04:18:54,815 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:18:54" (1/1) ... [2023-12-23 04:18:54,874 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 04:18:55,018 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_fillercodesize_ps-cn-500_file-10.i[916,929] [2023-12-23 04:18:55,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 04:18:55,231 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 04:18:55,246 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_fillercodesize_ps-cn-500_file-10.i[916,929] [2023-12-23 04:18:55,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 04:18:55,382 INFO L206 MainTranslator]: Completed translation [2023-12-23 04:18:55,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:18:55 WrapperNode [2023-12-23 04:18:55,383 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 04:18:55,385 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 04:18:55,385 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 04:18:55,385 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 04:18:55,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:18:55" (1/1) ... [2023-12-23 04:18:55,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:18:55" (1/1) ... [2023-12-23 04:18:55,478 INFO L138 Inliner]: procedures = 27, calls = 111, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 672 [2023-12-23 04:18:55,479 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 04:18:55,480 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 04:18:55,480 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 04:18:55,480 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 04:18:55,493 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:18:55" (1/1) ... [2023-12-23 04:18:55,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:18:55" (1/1) ... [2023-12-23 04:18:55,503 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:18:55" (1/1) ... [2023-12-23 04:18:55,524 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 04:18:55,524 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:18:55" (1/1) ... [2023-12-23 04:18:55,524 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:18:55" (1/1) ... [2023-12-23 04:18:55,561 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:18:55" (1/1) ... [2023-12-23 04:18:55,583 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:18:55" (1/1) ... [2023-12-23 04:18:55,591 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:18:55" (1/1) ... [2023-12-23 04:18:55,595 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:18:55" (1/1) ... [2023-12-23 04:18:55,622 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 04:18:55,623 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 04:18:55,623 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 04:18:55,623 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 04:18:55,624 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:18:55" (1/1) ... [2023-12-23 04:18:55,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 04:18:55,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 04:18:55,665 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 04:18:55,678 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 04:18:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 04:18:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 04:18:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 04:18:55,699 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 04:18:55,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 04:18:55,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 04:18:55,866 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 04:18:55,872 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 04:19:22,733 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 04:19:22,808 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 04:19:22,809 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 04:19:22,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:19:22 BoogieIcfgContainer [2023-12-23 04:19:22,809 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 04:19:22,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 04:19:22,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 04:19:22,816 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 04:19:22,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:18:54" (1/3) ... [2023-12-23 04:19:22,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7e65fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:19:22, skipping insertion in model container [2023-12-23 04:19:22,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:18:55" (2/3) ... [2023-12-23 04:19:22,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7e65fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:19:22, skipping insertion in model container [2023-12-23 04:19:22,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:19:22" (3/3) ... [2023-12-23 04:19:22,819 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-10.i [2023-12-23 04:19:22,836 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 04:19:22,836 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 04:19:22,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 04:19:22,907 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;@6113d142, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 04:19:22,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 04:19:22,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 293 states, 192 states have (on average 1.609375) internal successors, (309), 193 states have internal predecessors, (309), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-23 04:19:22,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-23 04:19:22,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:19:22,967 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:22,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:19:22,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:19:22,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1789881418, now seen corresponding path program 1 times [2023-12-23 04:19:22,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:19:22,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692918603] [2023-12-23 04:19:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:19:22,990 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 04:19:22,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:19:22,993 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 04:19:23,002 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 04:19:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:19:25,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 04:19:25,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:19:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9434 proven. 0 refuted. 0 times theorem prover too weak. 9578 trivial. 0 not checked. [2023-12-23 04:19:25,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:19:25,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:19:25,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692918603] [2023-12-23 04:19:25,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692918603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:19:25,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 04:19:25,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 04:19:25,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822548880] [2023-12-23 04:19:25,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:19:25,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 04:19:25,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:19:25,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 04:19:25,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 04:19:25,219 INFO L87 Difference]: Start difference. First operand has 293 states, 192 states have (on average 1.609375) internal successors, (309), 193 states have internal predecessors, (309), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-23 04:19:25,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:19:25,339 INFO L93 Difference]: Finished difference Result 582 states and 1104 transitions. [2023-12-23 04:19:25,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 04:19:25,344 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 632 [2023-12-23 04:19:25,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:19:25,353 INFO L225 Difference]: With dead ends: 582 [2023-12-23 04:19:25,353 INFO L226 Difference]: Without dead ends: 290 [2023-12-23 04:19:25,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 631 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 04:19:25,366 INFO L413 NwaCegarLoop]: 493 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, 493 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-23 04:19:25,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 493 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 04:19:25,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-12-23 04:19:25,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2023-12-23 04:19:25,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 190 states have (on average 1.5789473684210527) internal successors, (300), 190 states have internal predecessors, (300), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-23 04:19:25,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 496 transitions. [2023-12-23 04:19:25,475 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 496 transitions. Word has length 632 [2023-12-23 04:19:25,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:19:25,477 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 496 transitions. [2023-12-23 04:19:25,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-23 04:19:25,477 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 496 transitions. [2023-12-23 04:19:25,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-23 04:19:25,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:19:25,517 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:25,612 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 04:19:25,732 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 04:19:25,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:19:25,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:19:25,734 INFO L85 PathProgramCache]: Analyzing trace with hash -724518358, now seen corresponding path program 1 times [2023-12-23 04:19:25,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:19:25,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272908352] [2023-12-23 04:19:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:19:25,736 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 04:19:25,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:19:25,737 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 04:19:25,739 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 04:19:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:19:27,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:19:27,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:19:27,916 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 04:19:27,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:19:27,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:19:27,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272908352] [2023-12-23 04:19:27,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272908352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:19:27,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 04:19:27,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 04:19:27,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449614392] [2023-12-23 04:19:27,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:19:27,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:19:27,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:19:27,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:19:27,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 04:19:27,927 INFO L87 Difference]: Start difference. First operand 290 states and 496 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:19:32,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:19:32,441 INFO L93 Difference]: Finished difference Result 734 states and 1268 transitions. [2023-12-23 04:19:32,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:19:32,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 632 [2023-12-23 04:19:32,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:19:32,447 INFO L225 Difference]: With dead ends: 734 [2023-12-23 04:19:32,447 INFO L226 Difference]: Without dead ends: 445 [2023-12-23 04:19:32,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 630 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 04:19:32,449 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 272 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-23 04:19:32,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 939 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-23 04:19:32,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-12-23 04:19:32,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 442. [2023-12-23 04:19:32,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 323 states have (on average 1.6656346749226005) internal successors, (538), 324 states have internal predecessors, (538), 116 states have call successors, (116), 2 states have call predecessors, (116), 2 states have return successors, (116), 115 states have call predecessors, (116), 116 states have call successors, (116) [2023-12-23 04:19:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 770 transitions. [2023-12-23 04:19:32,487 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 770 transitions. Word has length 632 [2023-12-23 04:19:32,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:19:32,489 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 770 transitions. [2023-12-23 04:19:32,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:19:32,490 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 770 transitions. [2023-12-23 04:19:32,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-23 04:19:32,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:19:32,496 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:32,547 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 04:19:32,700 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 04:19:32,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:19:32,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:19:32,702 INFO L85 PathProgramCache]: Analyzing trace with hash -697452756, now seen corresponding path program 1 times [2023-12-23 04:19:32,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:19:32,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960224316] [2023-12-23 04:19:32,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:19:32,704 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 04:19:32,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:19:32,705 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 04:19:32,738 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 04:19:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:19:34,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:19:34,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:19:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 04:19:40,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:19:40,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:19:40,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960224316] [2023-12-23 04:19:40,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960224316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:19:40,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 04:19:40,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 04:19:40,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043478611] [2023-12-23 04:19:40,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:19:40,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:19:40,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:19:41,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:19:41,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 04:19:41,001 INFO L87 Difference]: Start difference. First operand 442 states and 770 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:19:41,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:19:41,260 INFO L93 Difference]: Finished difference Result 1324 states and 2308 transitions. [2023-12-23 04:19:41,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:19:41,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 632 [2023-12-23 04:19:41,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:19:41,269 INFO L225 Difference]: With dead ends: 1324 [2023-12-23 04:19:41,270 INFO L226 Difference]: Without dead ends: 883 [2023-12-23 04:19:41,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 630 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 04:19:41,272 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 214 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-23 04:19:41,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1134 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-23 04:19:41,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-12-23 04:19:41,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 881. [2023-12-23 04:19:41,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 644 states have (on average 1.6583850931677018) internal successors, (1068), 646 states have internal predecessors, (1068), 232 states have call successors, (232), 4 states have call predecessors, (232), 4 states have return successors, (232), 230 states have call predecessors, (232), 232 states have call successors, (232) [2023-12-23 04:19:41,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1532 transitions. [2023-12-23 04:19:41,411 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1532 transitions. Word has length 632 [2023-12-23 04:19:41,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:19:41,416 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1532 transitions. [2023-12-23 04:19:41,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:19:41,416 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1532 transitions. [2023-12-23 04:19:41,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2023-12-23 04:19:41,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:19:41,425 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:19:41,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-23 04:19:41,652 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 04:19:41,653 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:19:41,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:19:41,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1634415995, now seen corresponding path program 1 times [2023-12-23 04:19:41,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:19:41,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796564387] [2023-12-23 04:19:41,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:19:41,655 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 04:19:41,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:19:41,657 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 04:19:41,672 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 04:19:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:19:43,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 04:19:43,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:19:51,076 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9202 proven. 348 refuted. 0 times theorem prover too weak. 9462 trivial. 0 not checked. [2023-12-23 04:19:51,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:19:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 114 proven. 177 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-23 04:19:53,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:19:53,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796564387] [2023-12-23 04:19:53,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796564387] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 04:19:53,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:19:53,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 12 [2023-12-23 04:19:53,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189929266] [2023-12-23 04:19:53,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:19:53,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-23 04:19:53,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:19:53,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-23 04:19:53,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-23 04:19:53,134 INFO L87 Difference]: Start difference. First operand 881 states and 1532 transitions. Second operand has 12 states, 12 states have (on average 17.916666666666668) internal successors, (215), 12 states have internal predecessors, (215), 3 states have call successors, (157), 3 states have call predecessors, (157), 5 states have return successors, (158), 3 states have call predecessors, (158), 3 states have call successors, (158) [2023-12-23 04:20:01,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:20:01,045 INFO L93 Difference]: Finished difference Result 1854 states and 3189 transitions. [2023-12-23 04:20:01,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-23 04:20:01,049 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.916666666666668) internal successors, (215), 12 states have internal predecessors, (215), 3 states have call successors, (157), 3 states have call predecessors, (157), 5 states have return successors, (158), 3 states have call predecessors, (158), 3 states have call successors, (158) Word has length 633 [2023-12-23 04:20:01,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:20:01,059 INFO L225 Difference]: With dead ends: 1854 [2023-12-23 04:20:01,059 INFO L226 Difference]: Without dead ends: 974 [2023-12-23 04:20:01,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1276 GetRequests, 1255 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2023-12-23 04:20:01,071 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 824 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-23 04:20:01,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1680 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-23 04:20:01,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-12-23 04:20:01,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 961. [2023-12-23 04:20:01,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 681 states have (on average 1.6079295154185023) internal successors, (1095), 684 states have internal predecessors, (1095), 270 states have call successors, (270), 9 states have call predecessors, (270), 9 states have return successors, (270), 267 states have call predecessors, (270), 270 states have call successors, (270) [2023-12-23 04:20:01,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1635 transitions. [2023-12-23 04:20:01,153 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1635 transitions. Word has length 633 [2023-12-23 04:20:01,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:20:01,154 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1635 transitions. [2023-12-23 04:20:01,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.916666666666668) internal successors, (215), 12 states have internal predecessors, (215), 3 states have call successors, (157), 3 states have call predecessors, (157), 5 states have return successors, (158), 3 states have call predecessors, (158), 3 states have call successors, (158) [2023-12-23 04:20:01,155 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1635 transitions. [2023-12-23 04:20:01,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2023-12-23 04:20:01,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:20:01,161 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:01,236 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 04:20:01,388 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 04:20:01,389 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:20:01,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:20:01,389 INFO L85 PathProgramCache]: Analyzing trace with hash -140965357, now seen corresponding path program 1 times [2023-12-23 04:20:01,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:20:01,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098469765] [2023-12-23 04:20:01,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:20:01,391 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 04:20:01,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:20:01,392 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 04:20:01,393 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 04:20:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:20:03,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 04:20:03,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:20:06,304 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9331 proven. 120 refuted. 0 times theorem prover too weak. 9561 trivial. 0 not checked. [2023-12-23 04:20:06,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:20:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 171 proven. 120 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-23 04:20:08,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:20:08,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098469765] [2023-12-23 04:20:08,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098469765] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 04:20:08,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:20:08,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 04:20:08,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345603139] [2023-12-23 04:20:08,044 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:20:08,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 04:20:08,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:20:08,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 04:20:08,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 04:20:08,047 INFO L87 Difference]: Start difference. First operand 961 states and 1635 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) [2023-12-23 04:20:11,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:20:11,578 INFO L93 Difference]: Finished difference Result 1873 states and 3174 transitions. [2023-12-23 04:20:11,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 04:20:11,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) Word has length 633 [2023-12-23 04:20:11,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:20:11,587 INFO L225 Difference]: With dead ends: 1873 [2023-12-23 04:20:11,587 INFO L226 Difference]: Without dead ends: 977 [2023-12-23 04:20:11,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1268 GetRequests, 1258 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 04:20:11,590 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 669 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-23 04:20:11,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 919 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-23 04:20:11,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2023-12-23 04:20:11,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 961. [2023-12-23 04:20:11,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 679 states have (on average 1.5625920471281296) internal successors, (1061), 682 states have internal predecessors, (1061), 270 states have call successors, (270), 11 states have call predecessors, (270), 11 states have return successors, (270), 267 states have call predecessors, (270), 270 states have call successors, (270) [2023-12-23 04:20:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1601 transitions. [2023-12-23 04:20:11,669 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1601 transitions. Word has length 633 [2023-12-23 04:20:11,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:20:11,673 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1601 transitions. [2023-12-23 04:20:11,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (138), 2 states have call predecessors, (138), 4 states have return successors, (139), 2 states have call predecessors, (139), 2 states have call successors, (139) [2023-12-23 04:20:11,679 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1601 transitions. [2023-12-23 04:20:11,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2023-12-23 04:20:11,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:20:11,685 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:11,737 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 04:20:11,900 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 04:20:11,901 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:20:11,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:20:11,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1114836135, now seen corresponding path program 1 times [2023-12-23 04:20:11,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:20:11,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008400129] [2023-12-23 04:20:11,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:20:11,903 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 04:20:11,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:20:11,904 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 04:20:11,905 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 04:20:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:20:13,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 04:20:13,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:20:25,768 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 04:20:25,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:20:25,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:20:25,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008400129] [2023-12-23 04:20:25,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008400129] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:20:25,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 04:20:25,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 04:20:25,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536755429] [2023-12-23 04:20:25,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:20:25,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:20:25,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:20:25,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:20:25,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 04:20:25,770 INFO L87 Difference]: Start difference. First operand 961 states and 1601 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:20:26,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:20:26,309 INFO L93 Difference]: Finished difference Result 2753 states and 4599 transitions. [2023-12-23 04:20:26,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:20:26,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 633 [2023-12-23 04:20:26,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:20:26,321 INFO L225 Difference]: With dead ends: 2753 [2023-12-23 04:20:26,322 INFO L226 Difference]: Without dead ends: 1857 [2023-12-23 04:20:26,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 631 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 04:20:26,328 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 192 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-23 04:20:26,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1054 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-23 04:20:26,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2023-12-23 04:20:26,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1404. [2023-12-23 04:20:26,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1001 states have (on average 1.5644355644355645) internal successors, (1566), 1005 states have internal predecessors, (1566), 386 states have call successors, (386), 16 states have call predecessors, (386), 16 states have return successors, (386), 382 states have call predecessors, (386), 386 states have call successors, (386) [2023-12-23 04:20:26,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 2338 transitions. [2023-12-23 04:20:26,520 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 2338 transitions. Word has length 633 [2023-12-23 04:20:26,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:20:26,520 INFO L495 AbstractCegarLoop]: Abstraction has 1404 states and 2338 transitions. [2023-12-23 04:20:26,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:20:26,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 2338 transitions. [2023-12-23 04:20:26,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2023-12-23 04:20:26,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:20:26,526 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:26,606 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 [2023-12-23 04:20:26,748 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 04:20:26,749 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:20:26,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:20:26,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1218556503, now seen corresponding path program 1 times [2023-12-23 04:20:26,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:20:26,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113518565] [2023-12-23 04:20:26,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:20:26,751 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 04:20:26,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:20:26,752 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 04:20:26,759 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 04:20:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:20:28,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 04:20:28,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:20:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 04:20:34,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:20:34,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:20:34,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113518565] [2023-12-23 04:20:34,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113518565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:20:34,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 04:20:34,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 04:20:34,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814470192] [2023-12-23 04:20:34,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:20:34,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 04:20:34,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:20:34,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 04:20:34,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-23 04:20:34,282 INFO L87 Difference]: Start difference. First operand 1404 states and 2338 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:20:36,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:20:36,408 INFO L93 Difference]: Finished difference Result 2306 states and 3843 transitions. [2023-12-23 04:20:36,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 04:20:36,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 633 [2023-12-23 04:20:36,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:20:36,424 INFO L225 Difference]: With dead ends: 2306 [2023-12-23 04:20:36,424 INFO L226 Difference]: Without dead ends: 1857 [2023-12-23 04:20:36,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-23 04:20:36,427 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 669 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-23 04:20:36,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1646 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-23 04:20:36,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2023-12-23 04:20:36,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1404. [2023-12-23 04:20:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1001 states have (on average 1.5644355644355645) internal successors, (1566), 1005 states have internal predecessors, (1566), 386 states have call successors, (386), 16 states have call predecessors, (386), 16 states have return successors, (386), 382 states have call predecessors, (386), 386 states have call successors, (386) [2023-12-23 04:20:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 2338 transitions. [2023-12-23 04:20:36,604 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 2338 transitions. Word has length 633 [2023-12-23 04:20:36,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:20:36,605 INFO L495 AbstractCegarLoop]: Abstraction has 1404 states and 2338 transitions. [2023-12-23 04:20:36,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:20:36,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 2338 transitions. [2023-12-23 04:20:36,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2023-12-23 04:20:36,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:20:36,611 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:36,691 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 [2023-12-23 04:20:36,832 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 [2023-12-23 04:20:36,833 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:20:36,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:20:36,833 INFO L85 PathProgramCache]: Analyzing trace with hash 774276277, now seen corresponding path program 1 times [2023-12-23 04:20:36,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:20:36,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90636965] [2023-12-23 04:20:36,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:20:36,835 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 04:20:36,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:20:36,836 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) [2023-12-23 04:20:36,842 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 [2023-12-23 04:20:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:20:39,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 04:20:39,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:20:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9527 proven. 231 refuted. 0 times theorem prover too weak. 9254 trivial. 0 not checked. [2023-12-23 04:20:44,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:20:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 345 proven. 234 refuted. 0 times theorem prover too weak. 18433 trivial. 0 not checked. [2023-12-23 04:20:47,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:20:47,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90636965] [2023-12-23 04:20:47,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90636965] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 04:20:47,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:20:47,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-23 04:20:47,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824918459] [2023-12-23 04:20:47,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:20:47,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-23 04:20:47,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:20:47,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-23 04:20:47,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-23 04:20:47,115 INFO L87 Difference]: Start difference. First operand 1404 states and 2338 transitions. Second operand has 13 states, 13 states have (on average 12.692307692307692) internal successors, (165), 13 states have internal predecessors, (165), 3 states have call successors, (138), 3 states have call predecessors, (138), 7 states have return successors, (139), 3 states have call predecessors, (139), 3 states have call successors, (139) [2023-12-23 04:20:59,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:20:59,355 INFO L93 Difference]: Finished difference Result 3010 states and 4977 transitions. [2023-12-23 04:20:59,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-23 04:20:59,357 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.692307692307692) internal successors, (165), 13 states have internal predecessors, (165), 3 states have call successors, (138), 3 states have call predecessors, (138), 7 states have return successors, (139), 3 states have call predecessors, (139), 3 states have call successors, (139) Word has length 634 [2023-12-23 04:20:59,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:20:59,365 INFO L225 Difference]: With dead ends: 3010 [2023-12-23 04:20:59,365 INFO L226 Difference]: Without dead ends: 1671 [2023-12-23 04:20:59,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1288 GetRequests, 1256 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2023-12-23 04:20:59,370 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 1055 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 1916 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 1916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-12-23 04:20:59,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 2272 Invalid, 2363 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [447 Valid, 1916 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2023-12-23 04:20:59,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2023-12-23 04:20:59,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1084. [2023-12-23 04:20:59,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 735 states have (on average 1.4979591836734694) internal successors, (1101), 738 states have internal predecessors, (1101), 330 states have call successors, (330), 18 states have call predecessors, (330), 18 states have return successors, (330), 327 states have call predecessors, (330), 330 states have call successors, (330) [2023-12-23 04:20:59,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1761 transitions. [2023-12-23 04:20:59,559 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1761 transitions. Word has length 634 [2023-12-23 04:20:59,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:20:59,560 INFO L495 AbstractCegarLoop]: Abstraction has 1084 states and 1761 transitions. [2023-12-23 04:20:59,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.692307692307692) internal successors, (165), 13 states have internal predecessors, (165), 3 states have call successors, (138), 3 states have call predecessors, (138), 7 states have return successors, (139), 3 states have call predecessors, (139), 3 states have call successors, (139) [2023-12-23 04:20:59,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1761 transitions. [2023-12-23 04:20:59,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2023-12-23 04:20:59,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:20:59,569 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:20:59,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-23 04:20:59,792 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 [2023-12-23 04:20:59,793 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:20:59,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:20:59,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1959718735, now seen corresponding path program 1 times [2023-12-23 04:20:59,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:20:59,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114599373] [2023-12-23 04:20:59,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:20:59,795 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 04:20:59,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:20:59,796 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) [2023-12-23 04:20:59,802 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 [2023-12-23 04:21:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:21:01,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 04:21:01,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:21:16,004 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 8324 proven. 420 refuted. 0 times theorem prover too weak. 10268 trivial. 0 not checked. [2023-12-23 04:21:16,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:21:19,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:21:19,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114599373] [2023-12-23 04:21:19,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114599373] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:21:19,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1177655613] [2023-12-23 04:21:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:21:19,414 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:21:19,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:21:19,453 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:21:19,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-23 04:21:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:21:21,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:21:21,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:21:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 04:21:21,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:21:21,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1177655613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:21:21,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:21:21,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2023-12-23 04:21:21,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572448125] [2023-12-23 04:21:21,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:21:21,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:21:21,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:21:21,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:21:21,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-23 04:21:21,469 INFO L87 Difference]: Start difference. First operand 1084 states and 1761 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:21:21,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:21:21,920 INFO L93 Difference]: Finished difference Result 2574 states and 4245 transitions. [2023-12-23 04:21:21,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:21:21,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 634 [2023-12-23 04:21:21,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:21:21,929 INFO L225 Difference]: With dead ends: 2574 [2023-12-23 04:21:21,929 INFO L226 Difference]: Without dead ends: 1672 [2023-12-23 04:21:21,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1733 GetRequests, 1722 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-23 04:21:21,932 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 251 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-23 04:21:21,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 1021 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-23 04:21:21,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2023-12-23 04:21:22,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1668. [2023-12-23 04:21:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1219 states have (on average 1.5545529122231336) internal successors, (1895), 1226 states have internal predecessors, (1895), 426 states have call successors, (426), 22 states have call predecessors, (426), 22 states have return successors, (426), 419 states have call predecessors, (426), 426 states have call successors, (426) [2023-12-23 04:21:22,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2747 transitions. [2023-12-23 04:21:22,098 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2747 transitions. Word has length 634 [2023-12-23 04:21:22,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:21:22,099 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 2747 transitions. [2023-12-23 04:21:22,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:21:22,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2747 transitions. [2023-12-23 04:21:22,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2023-12-23 04:21:22,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:21:22,105 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:22,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-23 04:21:22,365 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 [2023-12-23 04:21:22,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-23 04:21:22,517 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:21:22,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:21:22,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1437855283, now seen corresponding path program 1 times [2023-12-23 04:21:22,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:21:22,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686960787] [2023-12-23 04:21:22,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:21:22,519 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 04:21:22,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:21:22,520 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 04:21:22,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-23 04:21:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:21:24,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 04:21:24,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:21:38,819 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 8324 proven. 420 refuted. 0 times theorem prover too weak. 10268 trivial. 0 not checked. [2023-12-23 04:21:38,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:21:42,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:21:42,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686960787] [2023-12-23 04:21:42,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686960787] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:21:42,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1046190887] [2023-12-23 04:21:42,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:21:42,025 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:21:42,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:21:42,026 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:21:42,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-23 04:21:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:21:43,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:21:43,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:21:43,915 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 04:21:43,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:21:43,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1046190887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:21:43,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:21:43,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2023-12-23 04:21:43,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332509960] [2023-12-23 04:21:43,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:21:43,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:21:43,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:21:43,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:21:43,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-23 04:21:43,918 INFO L87 Difference]: Start difference. First operand 1668 states and 2747 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:21:44,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:21:44,248 INFO L93 Difference]: Finished difference Result 4088 states and 6695 transitions. [2023-12-23 04:21:44,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:21:44,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 634 [2023-12-23 04:21:44,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:21:44,261 INFO L225 Difference]: With dead ends: 4088 [2023-12-23 04:21:44,261 INFO L226 Difference]: Without dead ends: 2602 [2023-12-23 04:21:44,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1733 GetRequests, 1722 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-23 04:21:44,264 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 273 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-23 04:21:44,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1152 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-23 04:21:44,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2023-12-23 04:21:44,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2598. [2023-12-23 04:21:44,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2598 states, 1843 states have (on average 1.4991861096039067) internal successors, (2763), 1858 states have internal predecessors, (2763), 716 states have call successors, (716), 38 states have call predecessors, (716), 38 states have return successors, (716), 701 states have call predecessors, (716), 716 states have call successors, (716) [2023-12-23 04:21:44,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 4195 transitions. [2023-12-23 04:21:44,554 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 4195 transitions. Word has length 634 [2023-12-23 04:21:44,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:21:44,555 INFO L495 AbstractCegarLoop]: Abstraction has 2598 states and 4195 transitions. [2023-12-23 04:21:44,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:21:44,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 4195 transitions. [2023-12-23 04:21:44,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2023-12-23 04:21:44,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:21:44,562 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:21:44,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-12-23 04:21:44,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-23 04:21:44,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 04:21:44,976 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:21:44,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:21:44,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2056526793, now seen corresponding path program 1 times [2023-12-23 04:21:44,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:21:44,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146247502] [2023-12-23 04:21:44,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:21:44,977 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 04:21:44,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:21:44,978 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 04:21:44,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-23 04:21:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:21:47,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 04:21:47,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:22:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 8324 proven. 420 refuted. 0 times theorem prover too weak. 10268 trivial. 0 not checked. [2023-12-23 04:22:00,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:22:03,095 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:22:03,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146247502] [2023-12-23 04:22:03,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146247502] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:22:03,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1307220866] [2023-12-23 04:22:03,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:22:03,095 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:22:03,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:22:03,097 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:22:03,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-23 04:22:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:22:04,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:22:04,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:22:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 04:22:04,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:22:04,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1307220866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:22:04,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:22:04,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2023-12-23 04:22:04,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451108277] [2023-12-23 04:22:04,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:22:04,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:22:04,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:22:04,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:22:04,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-23 04:22:04,927 INFO L87 Difference]: Start difference. First operand 2598 states and 4195 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:22:05,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:22:05,218 INFO L93 Difference]: Finished difference Result 5062 states and 8192 transitions. [2023-12-23 04:22:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:22:05,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 634 [2023-12-23 04:22:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:22:05,231 INFO L225 Difference]: With dead ends: 5062 [2023-12-23 04:22:05,231 INFO L226 Difference]: Without dead ends: 2646 [2023-12-23 04:22:05,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1733 GetRequests, 1722 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-23 04:22:05,238 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 277 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-23 04:22:05,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 942 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 04:22:05,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2023-12-23 04:22:05,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 1911. [2023-12-23 04:22:05,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1479 states have (on average 1.5517241379310345) internal successors, (2295), 1486 states have internal predecessors, (2295), 407 states have call successors, (407), 24 states have call predecessors, (407), 24 states have return successors, (407), 400 states have call predecessors, (407), 407 states have call successors, (407) [2023-12-23 04:22:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 3109 transitions. [2023-12-23 04:22:05,412 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 3109 transitions. Word has length 634 [2023-12-23 04:22:05,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:22:05,412 INFO L495 AbstractCegarLoop]: Abstraction has 1911 states and 3109 transitions. [2023-12-23 04:22:05,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:22:05,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 3109 transitions. [2023-12-23 04:22:05,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2023-12-23 04:22:05,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:22:05,419 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:05,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-23 04:22:05,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-23 04:22:05,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 04:22:05,833 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:22:05,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:22:05,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1485304715, now seen corresponding path program 1 times [2023-12-23 04:22:05,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:22:05,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623279534] [2023-12-23 04:22:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:22:05,835 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 04:22:05,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:22:05,836 INFO L229 MonitoredProcess]: Starting monitored process 16 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 04:22:05,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-23 04:22:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:22:07,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 04:22:07,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:22:20,678 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 8324 proven. 420 refuted. 0 times theorem prover too weak. 10268 trivial. 0 not checked. [2023-12-23 04:22:20,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:22:23,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:22:23,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623279534] [2023-12-23 04:22:23,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623279534] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:22:23,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [420201561] [2023-12-23 04:22:23,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:22:23,786 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:22:23,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:22:23,787 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:22:23,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-23 04:22:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:22:25,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:22:25,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:22:25,660 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 04:22:25,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:22:25,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [420201561] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:22:25,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:22:25,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2023-12-23 04:22:25,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086015153] [2023-12-23 04:22:25,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:22:25,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:22:25,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:22:25,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:22:25,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-23 04:22:25,662 INFO L87 Difference]: Start difference. First operand 1911 states and 3109 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:22:25,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:22:25,944 INFO L93 Difference]: Finished difference Result 5299 states and 8661 transitions. [2023-12-23 04:22:25,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:22:25,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 634 [2023-12-23 04:22:25,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:22:25,960 INFO L225 Difference]: With dead ends: 5299 [2023-12-23 04:22:25,961 INFO L226 Difference]: Without dead ends: 3541 [2023-12-23 04:22:25,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1733 GetRequests, 1722 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-23 04:22:25,966 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 469 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-23 04:22:25,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1075 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 04:22:25,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2023-12-23 04:22:26,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 3539. [2023-12-23 04:22:26,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3539 states, 2761 states have (on average 1.5425570445490764) internal successors, (4259), 2774 states have internal predecessors, (4259), 735 states have call successors, (735), 42 states have call predecessors, (735), 42 states have return successors, (735), 722 states have call predecessors, (735), 735 states have call successors, (735) [2023-12-23 04:22:26,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 5729 transitions. [2023-12-23 04:22:26,331 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 5729 transitions. Word has length 634 [2023-12-23 04:22:26,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:22:26,332 INFO L495 AbstractCegarLoop]: Abstraction has 3539 states and 5729 transitions. [2023-12-23 04:22:26,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:22:26,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 5729 transitions. [2023-12-23 04:22:26,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2023-12-23 04:22:26,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:22:26,339 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:26,416 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 (16)] Forceful destruction successful, exit code 0 [2023-12-23 04:22:26,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-12-23 04:22:26,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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=3,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 04:22:26,764 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:22:26,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:22:26,764 INFO L85 PathProgramCache]: Analyzing trace with hash -667656265, now seen corresponding path program 1 times [2023-12-23 04:22:26,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:22:26,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511274719] [2023-12-23 04:22:26,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:22:26,765 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 04:22:26,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:22:26,766 INFO L229 MonitoredProcess]: Starting monitored process 18 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 04:22:26,767 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 (18)] Waiting until timeout for monitored process [2023-12-23 04:22:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:22:29,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 04:22:29,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:22:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 8324 proven. 420 refuted. 0 times theorem prover too weak. 10268 trivial. 0 not checked. [2023-12-23 04:22:42,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:22:46,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:22:46,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511274719] [2023-12-23 04:22:46,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511274719] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:22:46,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1846396507] [2023-12-23 04:22:46,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:22:46,044 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:22:46,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:22:46,045 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:22:46,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-23 04:22:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:22:47,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 04:22:47,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:22:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 04:22:47,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:22:47,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1846396507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:22:47,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:22:47,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2023-12-23 04:22:47,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298899047] [2023-12-23 04:22:47,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:22:47,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:22:47,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:22:47,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:22:47,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-23 04:22:47,958 INFO L87 Difference]: Start difference. First operand 3539 states and 5729 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:22:48,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:22:48,288 INFO L93 Difference]: Finished difference Result 6983 states and 11341 transitions. [2023-12-23 04:22:48,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:22:48,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 634 [2023-12-23 04:22:48,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:22:48,303 INFO L225 Difference]: With dead ends: 6983 [2023-12-23 04:22:48,303 INFO L226 Difference]: Without dead ends: 3597 [2023-12-23 04:22:48,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1733 GetRequests, 1722 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-23 04:22:48,310 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 442 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-23 04:22:48,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 1307 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 04:22:48,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3597 states. [2023-12-23 04:22:48,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3597 to 3595. [2023-12-23 04:22:48,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3595 states, 2817 states have (on average 1.5331913383031595) internal successors, (4319), 2830 states have internal predecessors, (4319), 735 states have call successors, (735), 42 states have call predecessors, (735), 42 states have return successors, (735), 722 states have call predecessors, (735), 735 states have call successors, (735) [2023-12-23 04:22:48,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3595 states to 3595 states and 5789 transitions. [2023-12-23 04:22:48,659 INFO L78 Accepts]: Start accepts. Automaton has 3595 states and 5789 transitions. Word has length 634 [2023-12-23 04:22:48,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:22:48,659 INFO L495 AbstractCegarLoop]: Abstraction has 3595 states and 5789 transitions. [2023-12-23 04:22:48,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:22:48,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3595 states and 5789 transitions. [2023-12-23 04:22:48,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2023-12-23 04:22:48,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:22:48,666 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:48,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2023-12-23 04:22:48,935 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 (18)] Forceful destruction successful, exit code 0 [2023-12-23 04:22:49,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /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 04:22:49,083 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:22:49,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:22:49,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1266449997, now seen corresponding path program 1 times [2023-12-23 04:22:49,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:22:49,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488802043] [2023-12-23 04:22:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:22:49,085 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 04:22:49,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:22:49,086 INFO L229 MonitoredProcess]: Starting monitored process 20 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 04:22:49,090 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 (20)] Waiting until timeout for monitored process [2023-12-23 04:22:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:22:51,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 04:22:51,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:23:04,188 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 8324 proven. 420 refuted. 0 times theorem prover too weak. 10268 trivial. 0 not checked. [2023-12-23 04:23:04,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:23:07,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:23:07,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488802043] [2023-12-23 04:23:07,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488802043] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:23:07,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1250405565] [2023-12-23 04:23:07,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:23:07,240 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:23:07,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:23:07,241 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:23:07,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-23 04:23:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:23:08,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 04:23:08,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:23:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 04:23:14,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:23:14,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1250405565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:23:14,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:23:14,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2023-12-23 04:23:14,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456055511] [2023-12-23 04:23:14,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:23:14,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 04:23:14,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:23:14,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 04:23:14,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-23 04:23:14,754 INFO L87 Difference]: Start difference. First operand 3595 states and 5789 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:23:15,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:23:15,579 INFO L93 Difference]: Finished difference Result 10899 states and 17557 transitions. [2023-12-23 04:23:15,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-23 04:23:15,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 634 [2023-12-23 04:23:15,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:23:15,600 INFO L225 Difference]: With dead ends: 10899 [2023-12-23 04:23:15,600 INFO L226 Difference]: Without dead ends: 7457 [2023-12-23 04:23:15,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1734 GetRequests, 1721 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-12-23 04:23:15,607 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 443 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-23 04:23:15,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1452 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-23 04:23:15,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7457 states. [2023-12-23 04:23:16,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7457 to 6987. [2023-12-23 04:23:16,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6987 states, 5517 states have (on average 1.5328983143012507) internal successors, (8457), 5542 states have internal predecessors, (8457), 1391 states have call successors, (1391), 78 states have call predecessors, (1391), 78 states have return successors, (1391), 1366 states have call predecessors, (1391), 1391 states have call successors, (1391) [2023-12-23 04:23:16,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6987 states to 6987 states and 11239 transitions. [2023-12-23 04:23:16,299 INFO L78 Accepts]: Start accepts. Automaton has 6987 states and 11239 transitions. Word has length 634 [2023-12-23 04:23:16,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:23:16,300 INFO L495 AbstractCegarLoop]: Abstraction has 6987 states and 11239 transitions. [2023-12-23 04:23:16,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:23:16,300 INFO L276 IsEmpty]: Start isEmpty. Operand 6987 states and 11239 transitions. [2023-12-23 04:23:16,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2023-12-23 04:23:16,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:23:16,307 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:23:16,385 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 (20)] Forceful destruction successful, exit code 0 [2023-12-23 04:23:16,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2023-12-23 04:23:16,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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=3,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 04:23:16,728 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:23:16,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:23:16,728 INFO L85 PathProgramCache]: Analyzing trace with hash 802421531, now seen corresponding path program 1 times [2023-12-23 04:23:16,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:23:16,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741361141] [2023-12-23 04:23:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:23:16,729 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 04:23:16,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:23:16,730 INFO L229 MonitoredProcess]: Starting monitored process 22 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 04:23:16,735 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 (22)] Waiting until timeout for monitored process [2023-12-23 04:23:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:23:18,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 04:23:18,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:23:31,514 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 8324 proven. 420 refuted. 0 times theorem prover too weak. 10268 trivial. 0 not checked. [2023-12-23 04:23:31,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:23:34,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:23:34,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741361141] [2023-12-23 04:23:34,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741361141] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:23:34,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [769246354] [2023-12-23 04:23:34,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:23:34,520 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:23:34,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:23:34,521 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:23:34,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-12-23 04:23:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:23:42,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 04:23:42,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:23:51,916 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9297 proven. 171 refuted. 0 times theorem prover too weak. 9544 trivial. 0 not checked. [2023-12-23 04:23:51,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:23:52,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [769246354] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:23:52,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:23:52,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 12 [2023-12-23 04:23:52,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267155318] [2023-12-23 04:23:52,320 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:23:52,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-23 04:23:52,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:23:52,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-23 04:23:52,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-12-23 04:23:52,323 INFO L87 Difference]: Start difference. First operand 6987 states and 11239 transitions. Second operand has 13 states, 13 states have (on average 18.615384615384617) internal successors, (242), 12 states have internal predecessors, (242), 5 states have call successors, (196), 5 states have call predecessors, (196), 8 states have return successors, (196), 5 states have call predecessors, (196), 5 states have call successors, (196) [2023-12-23 04:24:07,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:24:11,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:24:15,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:24:19,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:24:23,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:24:26,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.53s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:24:30,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:24:34,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:24:37,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:24:42,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:24:46,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.81s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:24:51,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:24:55,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:24:59,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:24:59,657 INFO L93 Difference]: Finished difference Result 21207 states and 33694 transitions. [2023-12-23 04:24:59,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-23 04:24:59,658 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.615384615384617) internal successors, (242), 12 states have internal predecessors, (242), 5 states have call successors, (196), 5 states have call predecessors, (196), 8 states have return successors, (196), 5 states have call predecessors, (196), 5 states have call successors, (196) Word has length 635 [2023-12-23 04:24:59,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:24:59,703 INFO L225 Difference]: With dead ends: 21207 [2023-12-23 04:24:59,704 INFO L226 Difference]: Without dead ends: 14373 [2023-12-23 04:24:59,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1841 GetRequests, 1807 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=343, Invalid=917, Unknown=0, NotChecked=0, Total=1260 [2023-12-23 04:24:59,721 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 1566 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 1902 mSolverCounterSat, 296 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 1902 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.8s IncrementalHoareTripleChecker+Time [2023-12-23 04:24:59,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1590 Valid, 2286 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 1902 Invalid, 10 Unknown, 0 Unchecked, 64.8s Time] [2023-12-23 04:24:59,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14373 states. [2023-12-23 04:25:01,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14373 to 13767. [2023-12-23 04:25:01,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13767 states, 10966 states have (on average 1.509210286339595) internal successors, (16550), 11015 states have internal predecessors, (16550), 2607 states have call successors, (2607), 193 states have call predecessors, (2607), 193 states have return successors, (2607), 2558 states have call predecessors, (2607), 2607 states have call successors, (2607) [2023-12-23 04:25:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13767 states to 13767 states and 21764 transitions. [2023-12-23 04:25:01,308 INFO L78 Accepts]: Start accepts. Automaton has 13767 states and 21764 transitions. Word has length 635 [2023-12-23 04:25:01,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:25:01,309 INFO L495 AbstractCegarLoop]: Abstraction has 13767 states and 21764 transitions. [2023-12-23 04:25:01,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.615384615384617) internal successors, (242), 12 states have internal predecessors, (242), 5 states have call successors, (196), 5 states have call predecessors, (196), 8 states have return successors, (196), 5 states have call predecessors, (196), 5 states have call successors, (196) [2023-12-23 04:25:01,310 INFO L276 IsEmpty]: Start isEmpty. Operand 13767 states and 21764 transitions. [2023-12-23 04:25:01,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2023-12-23 04:25:01,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:25:01,318 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:01,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2023-12-23 04:25:01,607 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 (22)] Forceful destruction successful, exit code 0 [2023-12-23 04:25:01,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,22 /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 04:25:01,733 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:25:01,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:25:01,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2031845523, now seen corresponding path program 1 times [2023-12-23 04:25:01,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:25:01,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159981897] [2023-12-23 04:25:01,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:25:01,735 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 04:25:01,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:25:01,737 INFO L229 MonitoredProcess]: Starting monitored process 24 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 04:25:01,824 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 (24)] Waiting until timeout for monitored process [2023-12-23 04:25:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:25:04,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 04:25:04,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:25:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 7533 proven. 213 refuted. 0 times theorem prover too weak. 11266 trivial. 0 not checked. [2023-12-23 04:25:15,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:25:20,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:25:20,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159981897] [2023-12-23 04:25:20,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159981897] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:25:20,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [888383704] [2023-12-23 04:25:20,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:25:20,458 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:25:20,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:25:20,459 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:25:20,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-12-23 04:25:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:25:28,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 04:25:28,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:25:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 04:25:44,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:25:44,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [888383704] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:25:44,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 04:25:44,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-23 04:25:44,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017833231] [2023-12-23 04:25:44,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:25:44,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 04:25:44,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:25:44,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 04:25:44,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-23 04:25:44,565 INFO L87 Difference]: Start difference. First operand 13767 states and 21764 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:25:51,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:25:51,735 INFO L93 Difference]: Finished difference Result 40963 states and 64744 transitions. [2023-12-23 04:25:51,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-23 04:25:51,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 636 [2023-12-23 04:25:51,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:25:51,849 INFO L225 Difference]: With dead ends: 40963 [2023-12-23 04:25:51,850 INFO L226 Difference]: Without dead ends: 27361 [2023-12-23 04:25:51,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1358 GetRequests, 1348 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-23 04:25:51,880 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 979 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-23 04:25:51,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 1790 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-23 04:25:51,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27361 states. [2023-12-23 04:25:54,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27361 to 27291. [2023-12-23 04:25:54,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27291 states, 21774 states have (on average 1.5016992743639204) internal successors, (32698), 21871 states have internal predecessors, (32698), 5135 states have call successors, (5135), 381 states have call predecessors, (5135), 381 states have return successors, (5135), 5038 states have call predecessors, (5135), 5135 states have call successors, (5135) [2023-12-23 04:25:54,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27291 states to 27291 states and 42968 transitions. [2023-12-23 04:25:54,723 INFO L78 Accepts]: Start accepts. Automaton has 27291 states and 42968 transitions. Word has length 636 [2023-12-23 04:25:54,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:25:54,724 INFO L495 AbstractCegarLoop]: Abstraction has 27291 states and 42968 transitions. [2023-12-23 04:25:54,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:25:54,724 INFO L276 IsEmpty]: Start isEmpty. Operand 27291 states and 42968 transitions. [2023-12-23 04:25:54,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2023-12-23 04:25:54,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:25:54,736 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:54,816 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 (24)] Forceful destruction successful, exit code 0 [2023-12-23 04:25:54,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2023-12-23 04:25:55,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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=3,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 04:25:55,149 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:25:55,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:25:55,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1959458965, now seen corresponding path program 1 times [2023-12-23 04:25:55,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:25:55,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295287775] [2023-12-23 04:25:55,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:25:55,151 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 04:25:55,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:25:55,154 INFO L229 MonitoredProcess]: Starting monitored process 26 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 04:25:55,180 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 (26)] Waiting until timeout for monitored process [2023-12-23 04:25:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:25:57,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 04:25:57,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:26:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 7533 proven. 213 refuted. 0 times theorem prover too weak. 11266 trivial. 0 not checked. [2023-12-23 04:26:08,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:26:13,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:26:13,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295287775] [2023-12-23 04:26:13,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295287775] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:26:13,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [873257750] [2023-12-23 04:26:13,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:26:13,867 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:26:13,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:26:13,868 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:26:13,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2023-12-23 04:26:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:26:27,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 04:26:27,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:26:35,112 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9792 proven. 330 refuted. 0 times theorem prover too weak. 8890 trivial. 0 not checked. [2023-12-23 04:26:35,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:26:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 246 proven. 333 refuted. 0 times theorem prover too weak. 18433 trivial. 0 not checked. [2023-12-23 04:26:38,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [873257750] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 04:26:38,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-23 04:26:38,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2023-12-23 04:26:38,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441384699] [2023-12-23 04:26:38,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-23 04:26:38,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-23 04:26:38,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:26:38,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-23 04:26:38,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2023-12-23 04:26:38,378 INFO L87 Difference]: Start difference. First operand 27291 states and 42968 transitions. Second operand has 18 states, 18 states have (on average 20.666666666666668) internal successors, (372), 18 states have internal predecessors, (372), 6 states have call successors, (253), 5 states have call predecessors, (253), 10 states have return successors, (254), 6 states have call predecessors, (254), 6 states have call successors, (254) [2023-12-23 04:26:47,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 04:26:59,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:26:59,052 INFO L93 Difference]: Finished difference Result 70640 states and 110442 transitions. [2023-12-23 04:26:59,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-23 04:26:59,065 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 20.666666666666668) internal successors, (372), 18 states have internal predecessors, (372), 6 states have call successors, (253), 5 states have call predecessors, (253), 10 states have return successors, (254), 6 states have call predecessors, (254), 6 states have call successors, (254) Word has length 636 [2023-12-23 04:26:59,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:26:59,181 INFO L225 Difference]: With dead ends: 70640 [2023-12-23 04:26:59,181 INFO L226 Difference]: Without dead ends: 43514 [2023-12-23 04:26:59,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2025 GetRequests, 1978 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2023-12-23 04:26:59,241 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1449 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 1897 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 2235 SdHoareTripleChecker+Invalid, 2474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 1897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-12-23 04:26:59,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 2235 Invalid, 2474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 1897 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time] [2023-12-23 04:26:59,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43514 states. [2023-12-23 04:27:02,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43514 to 38340. [2023-12-23 04:27:02,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38340 states, 30677 states have (on average 1.4944094924536298) internal successors, (45844), 30789 states have internal predecessors, (45844), 7010 states have call successors, (7010), 652 states have call predecessors, (7010), 652 states have return successors, (7010), 6898 states have call predecessors, (7010), 7010 states have call successors, (7010) [2023-12-23 04:27:02,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38340 states to 38340 states and 59864 transitions. [2023-12-23 04:27:02,530 INFO L78 Accepts]: Start accepts. Automaton has 38340 states and 59864 transitions. Word has length 636 [2023-12-23 04:27:02,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:27:02,531 INFO L495 AbstractCegarLoop]: Abstraction has 38340 states and 59864 transitions. [2023-12-23 04:27:02,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.666666666666668) internal successors, (372), 18 states have internal predecessors, (372), 6 states have call successors, (253), 5 states have call predecessors, (253), 10 states have return successors, (254), 6 states have call predecessors, (254), 6 states have call successors, (254) [2023-12-23 04:27:02,531 INFO L276 IsEmpty]: Start isEmpty. Operand 38340 states and 59864 transitions. [2023-12-23 04:27:02,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2023-12-23 04:27:02,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:27:02,542 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:02,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2023-12-23 04:27:02,849 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 (26)] Forceful destruction successful, exit code 0 [2023-12-23 04:27:02,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,26 /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 04:27:02,970 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:27:02,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:27:02,971 INFO L85 PathProgramCache]: Analyzing trace with hash 862411281, now seen corresponding path program 1 times [2023-12-23 04:27:02,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:27:02,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810265072] [2023-12-23 04:27:02,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:27:02,972 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 04:27:02,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:27:02,973 INFO L229 MonitoredProcess]: Starting monitored process 28 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 04:27:02,973 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 (28)] Waiting until timeout for monitored process [2023-12-23 04:27:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:27:05,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 04:27:05,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:27:16,076 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-23 04:27:16,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 04:27:16,077 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:27:16,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810265072] [2023-12-23 04:27:16,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810265072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 04:27:16,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 04:27:16,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 04:27:16,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961323577] [2023-12-23 04:27:16,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 04:27:16,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 04:27:16,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:27:16,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 04:27:16,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 04:27:16,079 INFO L87 Difference]: Start difference. First operand 38340 states and 59864 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:27:20,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:27:20,167 INFO L93 Difference]: Finished difference Result 90464 states and 141236 transitions. [2023-12-23 04:27:20,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 04:27:20,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 636 [2023-12-23 04:27:20,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:27:20,299 INFO L225 Difference]: With dead ends: 90464 [2023-12-23 04:27:20,300 INFO L226 Difference]: Without dead ends: 52374 [2023-12-23 04:27:20,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 634 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 04:27:20,367 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 156 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-23 04:27:20,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 923 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 04:27:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52374 states. [2023-12-23 04:27:25,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52374 to 52372. [2023-12-23 04:27:25,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52372 states, 41877 states have (on average 1.477899563005946) internal successors, (61890), 42031 states have internal predecessors, (61890), 9602 states have call successors, (9602), 892 states have call predecessors, (9602), 892 states have return successors, (9602), 9448 states have call predecessors, (9602), 9602 states have call successors, (9602) [2023-12-23 04:27:25,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52372 states to 52372 states and 81094 transitions. [2023-12-23 04:27:25,262 INFO L78 Accepts]: Start accepts. Automaton has 52372 states and 81094 transitions. Word has length 636 [2023-12-23 04:27:25,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:27:25,262 INFO L495 AbstractCegarLoop]: Abstraction has 52372 states and 81094 transitions. [2023-12-23 04:27:25,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-23 04:27:25,263 INFO L276 IsEmpty]: Start isEmpty. Operand 52372 states and 81094 transitions. [2023-12-23 04:27:25,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-23 04:27:25,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:27:25,275 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:25,352 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 (28)] Forceful destruction successful, exit code 0 [2023-12-23 04:27:25,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /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 04:27:25,489 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:27:25,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:27:25,490 INFO L85 PathProgramCache]: Analyzing trace with hash -260951172, now seen corresponding path program 1 times [2023-12-23 04:27:25,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:27:25,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427762028] [2023-12-23 04:27:25,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:27:25,491 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 04:27:25,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:27:25,492 INFO L229 MonitoredProcess]: Starting monitored process 29 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 04:27:25,516 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 (29)] Waiting until timeout for monitored process [2023-12-23 04:27:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:27:29,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 04:27:29,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:27:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 10196 proven. 324 refuted. 0 times theorem prover too weak. 8492 trivial. 0 not checked. [2023-12-23 04:27:42,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:27:44,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:27:44,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427762028] [2023-12-23 04:27:44,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427762028] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:27:44,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1483071755] [2023-12-23 04:27:44,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:27:44,577 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:27:44,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:27:44,578 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:27:44,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2023-12-23 04:27:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:27:57,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-23 04:27:57,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:28:06,118 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 10196 proven. 324 refuted. 0 times theorem prover too weak. 8492 trivial. 0 not checked. [2023-12-23 04:28:06,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:28:07,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1483071755] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:28:07,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:28:07,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2023-12-23 04:28:07,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796913773] [2023-12-23 04:28:07,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:28:07,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-23 04:28:07,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:28:07,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-23 04:28:07,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2023-12-23 04:28:07,442 INFO L87 Difference]: Start difference. First operand 52372 states and 81094 transitions. Second operand has 20 states, 20 states have (on average 14.45) internal successors, (289), 20 states have internal predecessors, (289), 6 states have call successors, (196), 6 states have call predecessors, (196), 10 states have return successors, (196), 6 states have call predecessors, (196), 6 states have call successors, (196) [2023-12-23 04:29:08,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 04:29:08,204 INFO L93 Difference]: Finished difference Result 311828 states and 474434 transitions. [2023-12-23 04:29:08,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-23 04:29:08,205 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 14.45) internal successors, (289), 20 states have internal predecessors, (289), 6 states have call successors, (196), 6 states have call predecessors, (196), 10 states have return successors, (196), 6 states have call predecessors, (196), 6 states have call successors, (196) Word has length 637 [2023-12-23 04:29:08,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 04:29:09,108 INFO L225 Difference]: With dead ends: 311828 [2023-12-23 04:29:09,108 INFO L226 Difference]: Without dead ends: 259706 [2023-12-23 04:29:09,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1512 GetRequests, 1436 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1965 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1166, Invalid=4840, Unknown=0, NotChecked=0, Total=6006 [2023-12-23 04:29:09,274 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 2780 mSDsluCounter, 3802 mSDsCounter, 0 mSdLazyCounter, 4717 mSolverCounterSat, 1596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2862 SdHoareTripleChecker+Valid, 4314 SdHoareTripleChecker+Invalid, 6313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1596 IncrementalHoareTripleChecker+Valid, 4717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.2s IncrementalHoareTripleChecker+Time [2023-12-23 04:29:09,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2862 Valid, 4314 Invalid, 6313 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1596 Valid, 4717 Invalid, 0 Unknown, 0 Unchecked, 33.2s Time] [2023-12-23 04:29:09,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259706 states. [2023-12-23 04:29:30,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259706 to 217336. [2023-12-23 04:29:31,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217336 states, 175428 states have (on average 1.4699306838133024) internal successors, (257867), 176400 states have internal predecessors, (257867), 38222 states have call successors, (38222), 3685 states have call predecessors, (38222), 3685 states have return successors, (38222), 37250 states have call predecessors, (38222), 38222 states have call successors, (38222) [2023-12-23 04:29:32,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217336 states to 217336 states and 334311 transitions. [2023-12-23 04:29:32,264 INFO L78 Accepts]: Start accepts. Automaton has 217336 states and 334311 transitions. Word has length 637 [2023-12-23 04:29:32,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 04:29:32,265 INFO L495 AbstractCegarLoop]: Abstraction has 217336 states and 334311 transitions. [2023-12-23 04:29:32,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.45) internal successors, (289), 20 states have internal predecessors, (289), 6 states have call successors, (196), 6 states have call predecessors, (196), 10 states have return successors, (196), 6 states have call predecessors, (196), 6 states have call successors, (196) [2023-12-23 04:29:32,265 INFO L276 IsEmpty]: Start isEmpty. Operand 217336 states and 334311 transitions. [2023-12-23 04:29:32,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-23 04:29:32,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 04:29:32,297 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:32,350 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 (29)] Forceful destruction successful, exit code 0 [2023-12-23 04:29:32,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2023-12-23 04:29:32,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /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=3,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 04:29:32,698 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 04:29:32,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 04:29:32,699 INFO L85 PathProgramCache]: Analyzing trace with hash -655317958, now seen corresponding path program 1 times [2023-12-23 04:29:32,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 04:29:32,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583368856] [2023-12-23 04:29:32,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:29:32,701 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 04:29:32,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 04:29:32,702 INFO L229 MonitoredProcess]: Starting monitored process 31 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 04:29:32,703 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 (31)] Waiting until timeout for monitored process [2023-12-23 04:29:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:29:36,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 04:29:36,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:29:45,216 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 11640 proven. 333 refuted. 0 times theorem prover too weak. 7039 trivial. 0 not checked. [2023-12-23 04:29:45,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:30:02,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 04:30:02,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583368856] [2023-12-23 04:30:02,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583368856] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:30:02,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [275932495] [2023-12-23 04:30:02,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 04:30:02,456 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 04:30:02,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 04:30:02,457 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 04:30:02,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2023-12-23 04:30:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 04:30:15,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-23 04:30:15,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 04:30:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 12113 proven. 324 refuted. 0 times theorem prover too weak. 6575 trivial. 0 not checked. [2023-12-23 04:30:44,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 04:30:57,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [275932495] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 04:30:57,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 04:30:57,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 26 [2023-12-23 04:30:57,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014616757] [2023-12-23 04:30:57,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 04:30:57,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-23 04:30:57,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 04:30:57,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-23 04:30:57,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2023-12-23 04:30:57,683 INFO L87 Difference]: Start difference. First operand 217336 states and 334311 transitions. Second operand has 26 states, 26 states have (on average 12.23076923076923) internal successors, (318), 25 states have internal predecessors, (318), 8 states have call successors, (196), 8 states have call predecessors, (196), 13 states have return successors, (196), 8 states have call predecessors, (196), 8 states have call successors, (196)