/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/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 02:30:04,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 02:30:04,113 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 02:30:04,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 02:30:04,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 02:30:04,130 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 02:30:04,130 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 02:30:04,130 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 02:30:04,131 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 02:30:04,131 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 02:30:04,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 02:30:04,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 02:30:04,132 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 02:30:04,132 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 02:30:04,132 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 02:30:04,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 02:30:04,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 02:30:04,133 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 02:30:04,133 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 02:30:04,133 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 02:30:04,134 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 02:30:04,134 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 02:30:04,134 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 02:30:04,134 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 02:30:04,134 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 02:30:04,135 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 02:30:04,135 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 02:30:04,135 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 02:30:04,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 02:30:04,135 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 02:30:04,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 02:30:04,136 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 02:30:04,136 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 02:30:04,136 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 02:30:04,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 02:30:04,136 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 02:30:04,136 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 02:30:04,137 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 02:30:04,137 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 02:30:04,137 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 02:30:04,137 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 02:30:04,137 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 02:30:04,137 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 02:30:04,137 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 02:30:04,137 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 02:30:04,137 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 02:30:04,138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 02:30:04,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 02:30:04,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 02:30:04,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 02:30:04,298 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 02:30:04,298 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 02:30:04,299 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c [2023-12-22 02:30:05,341 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 02:30:05,511 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 02:30:05,513 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c [2023-12-22 02:30:05,529 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e74eb8cf/0217e7a24d1e4e039cc19c5a2cbbf51d/FLAG7b4ff2a4b [2023-12-22 02:30:05,541 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e74eb8cf/0217e7a24d1e4e039cc19c5a2cbbf51d [2023-12-22 02:30:05,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 02:30:05,544 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 02:30:05,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 02:30:05,545 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 02:30:05,559 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 02:30:05,560 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:30:05" (1/1) ... [2023-12-22 02:30:05,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@479f7a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:05, skipping insertion in model container [2023-12-22 02:30:05,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:30:05" (1/1) ... [2023-12-22 02:30:05,601 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 02:30:05,727 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[913,926] [2023-12-22 02:30:05,755 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[5977,5990] [2023-12-22 02:30:05,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 02:30:05,800 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 02:30:05,807 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[913,926] [2023-12-22 02:30:05,818 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[5977,5990] [2023-12-22 02:30:05,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 02:30:05,862 INFO L206 MainTranslator]: Completed translation [2023-12-22 02:30:05,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:05 WrapperNode [2023-12-22 02:30:05,865 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 02:30:05,867 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 02:30:05,867 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 02:30:05,867 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 02:30:05,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:05" (1/1) ... [2023-12-22 02:30:05,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:05" (1/1) ... [2023-12-22 02:30:05,922 INFO L138 Inliner]: procedures = 59, calls = 63, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 636 [2023-12-22 02:30:05,923 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 02:30:05,923 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 02:30:05,923 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 02:30:05,924 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 02:30:05,931 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:05" (1/1) ... [2023-12-22 02:30:05,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:05" (1/1) ... [2023-12-22 02:30:05,936 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:05" (1/1) ... [2023-12-22 02:30:05,947 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]. [2023-12-22 02:30:05,947 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:05" (1/1) ... [2023-12-22 02:30:05,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:05" (1/1) ... [2023-12-22 02:30:05,963 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:05" (1/1) ... [2023-12-22 02:30:05,970 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:05" (1/1) ... [2023-12-22 02:30:05,972 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:05" (1/1) ... [2023-12-22 02:30:05,974 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:05" (1/1) ... [2023-12-22 02:30:05,977 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 02:30:05,978 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 02:30:05,978 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 02:30:05,978 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 02:30:05,992 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:05" (1/1) ... [2023-12-22 02:30:06,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 02:30:06,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 02:30:06,020 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) [2023-12-22 02:30:06,022 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 [2023-12-22 02:30:06,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 02:30:06,040 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-22 02:30:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-22 02:30:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-22 02:30:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-22 02:30:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-22 02:30:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-22 02:30:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-22 02:30:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-22 02:30:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-22 02:30:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-22 02:30:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-22 02:30:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-22 02:30:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 02:30:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-22 02:30:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-22 02:30:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-22 02:30:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-22 02:30:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 02:30:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 02:30:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-22 02:30:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-22 02:30:06,117 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 02:30:06,119 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 02:30:06,711 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 02:30:06,767 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 02:30:06,768 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-12-22 02:30:06,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:30:06 BoogieIcfgContainer [2023-12-22 02:30:06,768 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 02:30:06,771 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 02:30:06,771 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 02:30:06,774 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 02:30:06,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:30:05" (1/3) ... [2023-12-22 02:30:06,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719107c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:30:06, skipping insertion in model container [2023-12-22 02:30:06,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:30:05" (2/3) ... [2023-12-22 02:30:06,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719107c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:30:06, skipping insertion in model container [2023-12-22 02:30:06,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:30:06" (3/3) ... [2023-12-22 02:30:06,776 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.05.cil-1.c [2023-12-22 02:30:06,789 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 02:30:06,789 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-22 02:30:06,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 02:30:06,847 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;@52ba05b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 02:30:06,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-22 02:30:06,852 INFO L276 IsEmpty]: Start isEmpty. Operand has 250 states, 213 states have (on average 1.6901408450704225) internal successors, (360), 218 states have internal predecessors, (360), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-22 02:30:06,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-22 02:30:06,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:06,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:06,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:06,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:06,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1006390877, now seen corresponding path program 1 times [2023-12-22 02:30:06,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:06,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375554805] [2023-12-22 02:30:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:06,885 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 [2023-12-22 02:30:06,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:06,888 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) [2023-12-22 02:30:06,936 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 [2023-12-22 02:30:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:07,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:30:07,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:07,088 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:07,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:07,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375554805] [2023-12-22 02:30:07,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375554805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:07,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:07,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:30:07,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894464850] [2023-12-22 02:30:07,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:07,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:30:07,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:07,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:30:07,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:07,126 INFO L87 Difference]: Start difference. First operand has 250 states, 213 states have (on average 1.6901408450704225) internal successors, (360), 218 states have internal predecessors, (360), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-22 02:30:07,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:07,272 INFO L93 Difference]: Finished difference Result 538 states and 883 transitions. [2023-12-22 02:30:07,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:30:07,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2023-12-22 02:30:07,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:07,282 INFO L225 Difference]: With dead ends: 538 [2023-12-22 02:30:07,283 INFO L226 Difference]: Without dead ends: 298 [2023-12-22 02:30:07,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:07,288 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 358 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:07,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 431 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:30:07,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-12-22 02:30:07,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 294. [2023-12-22 02:30:07,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 253 states have (on average 1.5375494071146245) internal successors, (389), 256 states have internal predecessors, (389), 29 states have call successors, (29), 11 states have call predecessors, (29), 10 states have return successors, (31), 27 states have call predecessors, (31), 27 states have call successors, (31) [2023-12-22 02:30:07,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 449 transitions. [2023-12-22 02:30:07,335 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 449 transitions. Word has length 37 [2023-12-22 02:30:07,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:07,336 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 449 transitions. [2023-12-22 02:30:07,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-22 02:30:07,336 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 449 transitions. [2023-12-22 02:30:07,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-22 02:30:07,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:07,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:07,344 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 [2023-12-22 02:30:07,542 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 [2023-12-22 02:30:07,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:07,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:07,543 INFO L85 PathProgramCache]: Analyzing trace with hash 177327675, now seen corresponding path program 1 times [2023-12-22 02:30:07,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:07,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626412801] [2023-12-22 02:30:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:07,544 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 [2023-12-22 02:30:07,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:07,545 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) [2023-12-22 02:30:07,549 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 [2023-12-22 02:30:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:07,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:30:07,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:07,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:07,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:07,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626412801] [2023-12-22 02:30:07,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626412801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:07,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:07,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:30:07,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371695772] [2023-12-22 02:30:07,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:07,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:30:07,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:07,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:30:07,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:07,654 INFO L87 Difference]: Start difference. First operand 294 states and 449 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-22 02:30:07,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:07,734 INFO L93 Difference]: Finished difference Result 494 states and 741 transitions. [2023-12-22 02:30:07,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:30:07,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-12-22 02:30:07,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:07,740 INFO L225 Difference]: With dead ends: 494 [2023-12-22 02:30:07,740 INFO L226 Difference]: Without dead ends: 391 [2023-12-22 02:30:07,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:07,744 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 351 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:07,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 412 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:30:07,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-22 02:30:07,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 387. [2023-12-22 02:30:07,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 334 states have (on average 1.4970059880239521) internal successors, (500), 337 states have internal predecessors, (500), 37 states have call successors, (37), 15 states have call predecessors, (37), 14 states have return successors, (43), 35 states have call predecessors, (43), 35 states have call successors, (43) [2023-12-22 02:30:07,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 580 transitions. [2023-12-22 02:30:07,782 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 580 transitions. Word has length 38 [2023-12-22 02:30:07,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:07,782 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 580 transitions. [2023-12-22 02:30:07,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-22 02:30:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 580 transitions. [2023-12-22 02:30:07,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-22 02:30:07,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:07,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:07,795 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 (3)] Ended with exit code 0 [2023-12-22 02:30:07,992 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 [2023-12-22 02:30:07,994 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:07,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:07,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1706375964, now seen corresponding path program 1 times [2023-12-22 02:30:07,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:07,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449487503] [2023-12-22 02:30:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:07,999 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 [2023-12-22 02:30:07,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:08,001 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) [2023-12-22 02:30:08,031 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 [2023-12-22 02:30:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:08,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:30:08,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:08,101 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:08,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:08,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449487503] [2023-12-22 02:30:08,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449487503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:08,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:08,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:30:08,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867623905] [2023-12-22 02:30:08,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:08,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:30:08,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:08,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:30:08,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:08,103 INFO L87 Difference]: Start difference. First operand 387 states and 580 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-22 02:30:08,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:08,209 INFO L93 Difference]: Finished difference Result 739 states and 1077 transitions. [2023-12-22 02:30:08,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:30:08,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-12-22 02:30:08,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:08,213 INFO L225 Difference]: With dead ends: 739 [2023-12-22 02:30:08,213 INFO L226 Difference]: Without dead ends: 543 [2023-12-22 02:30:08,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:08,216 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 58 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:08,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 692 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:30:08,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2023-12-22 02:30:08,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 492. [2023-12-22 02:30:08,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 427 states have (on average 1.4730679156908666) internal successors, (629), 432 states have internal predecessors, (629), 43 states have call successors, (43), 21 states have call predecessors, (43), 20 states have return successors, (51), 39 states have call predecessors, (51), 41 states have call successors, (51) [2023-12-22 02:30:08,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 723 transitions. [2023-12-22 02:30:08,260 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 723 transitions. Word has length 39 [2023-12-22 02:30:08,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:08,260 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 723 transitions. [2023-12-22 02:30:08,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-22 02:30:08,261 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 723 transitions. [2023-12-22 02:30:08,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-22 02:30:08,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:08,262 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:08,266 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 [2023-12-22 02:30:08,464 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 [2023-12-22 02:30:08,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:08,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:08,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1881139756, now seen corresponding path program 1 times [2023-12-22 02:30:08,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:08,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045085901] [2023-12-22 02:30:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:08,466 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 [2023-12-22 02:30:08,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:08,467 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) [2023-12-22 02:30:08,468 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 [2023-12-22 02:30:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:08,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:30:08,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:08,559 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:08,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:08,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:08,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045085901] [2023-12-22 02:30:08,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045085901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:08,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:08,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:30:08,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744647838] [2023-12-22 02:30:08,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:08,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:30:08,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:08,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:30:08,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:08,561 INFO L87 Difference]: Start difference. First operand 492 states and 723 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-22 02:30:08,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:08,633 INFO L93 Difference]: Finished difference Result 944 states and 1360 transitions. [2023-12-22 02:30:08,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:30:08,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2023-12-22 02:30:08,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:08,636 INFO L225 Difference]: With dead ends: 944 [2023-12-22 02:30:08,636 INFO L226 Difference]: Without dead ends: 643 [2023-12-22 02:30:08,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:08,637 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 46 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:08,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 733 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:30:08,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-12-22 02:30:08,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2023-12-22 02:30:08,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 556 states have (on average 1.4172661870503598) internal successors, (788), 561 states have internal predecessors, (788), 57 states have call successors, (57), 29 states have call predecessors, (57), 28 states have return successors, (73), 53 states have call predecessors, (73), 55 states have call successors, (73) [2023-12-22 02:30:08,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 918 transitions. [2023-12-22 02:30:08,662 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 918 transitions. Word has length 54 [2023-12-22 02:30:08,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:08,662 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 918 transitions. [2023-12-22 02:30:08,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-22 02:30:08,662 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 918 transitions. [2023-12-22 02:30:08,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-22 02:30:08,663 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:08,663 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:08,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-22 02:30:08,866 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 [2023-12-22 02:30:08,866 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:08,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:08,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1838751112, now seen corresponding path program 1 times [2023-12-22 02:30:08,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:08,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609262267] [2023-12-22 02:30:08,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:08,867 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 [2023-12-22 02:30:08,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:08,868 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) [2023-12-22 02:30:08,872 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 [2023-12-22 02:30:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:08,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:30:08,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-22 02:30:08,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:08,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:08,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609262267] [2023-12-22 02:30:08,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [609262267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:08,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:08,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:30:08,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219566647] [2023-12-22 02:30:08,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:08,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:30:08,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:08,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:30:08,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:08,978 INFO L87 Difference]: Start difference. First operand 643 states and 918 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-22 02:30:09,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:09,051 INFO L93 Difference]: Finished difference Result 1128 states and 1577 transitions. [2023-12-22 02:30:09,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:30:09,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2023-12-22 02:30:09,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:09,055 INFO L225 Difference]: With dead ends: 1128 [2023-12-22 02:30:09,055 INFO L226 Difference]: Without dead ends: 756 [2023-12-22 02:30:09,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:09,057 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 338 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:09,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 416 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:30:09,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-12-22 02:30:09,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 756. [2023-12-22 02:30:09,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 655 states have (on average 1.383206106870229) internal successors, (906), 660 states have internal predecessors, (906), 65 states have call successors, (65), 35 states have call predecessors, (65), 34 states have return successors, (85), 61 states have call predecessors, (85), 63 states have call successors, (85) [2023-12-22 02:30:09,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1056 transitions. [2023-12-22 02:30:09,089 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1056 transitions. Word has length 59 [2023-12-22 02:30:09,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:09,089 INFO L495 AbstractCegarLoop]: Abstraction has 756 states and 1056 transitions. [2023-12-22 02:30:09,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-22 02:30:09,089 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1056 transitions. [2023-12-22 02:30:09,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-22 02:30:09,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:09,092 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:09,097 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 (6)] Ended with exit code 0 [2023-12-22 02:30:09,295 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 [2023-12-22 02:30:09,295 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:09,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:09,296 INFO L85 PathProgramCache]: Analyzing trace with hash 464706324, now seen corresponding path program 1 times [2023-12-22 02:30:09,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:09,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119290616] [2023-12-22 02:30:09,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:09,296 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 [2023-12-22 02:30:09,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:09,297 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) [2023-12-22 02:30:09,301 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 [2023-12-22 02:30:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:09,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:09,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-22 02:30:09,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:09,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:09,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119290616] [2023-12-22 02:30:09,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119290616] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:09,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:09,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:09,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957584306] [2023-12-22 02:30:09,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:09,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:30:09,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:09,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:30:09,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:09,392 INFO L87 Difference]: Start difference. First operand 756 states and 1056 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-22 02:30:09,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:09,512 INFO L93 Difference]: Finished difference Result 1255 states and 1745 transitions. [2023-12-22 02:30:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:30:09,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-22 02:30:09,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:09,515 INFO L225 Difference]: With dead ends: 1255 [2023-12-22 02:30:09,515 INFO L226 Difference]: Without dead ends: 817 [2023-12-22 02:30:09,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:09,516 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 11 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:09,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1036 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:30:09,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2023-12-22 02:30:09,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 787. [2023-12-22 02:30:09,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 684 states have (on average 1.3669590643274854) internal successors, (935), 691 states have internal predecessors, (935), 65 states have call successors, (65), 35 states have call predecessors, (65), 36 states have return successors, (87), 61 states have call predecessors, (87), 63 states have call successors, (87) [2023-12-22 02:30:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1087 transitions. [2023-12-22 02:30:09,547 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1087 transitions. Word has length 60 [2023-12-22 02:30:09,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:09,548 INFO L495 AbstractCegarLoop]: Abstraction has 787 states and 1087 transitions. [2023-12-22 02:30:09,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-22 02:30:09,548 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1087 transitions. [2023-12-22 02:30:09,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-22 02:30:09,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:09,549 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:09,555 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 [2023-12-22 02:30:09,753 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 [2023-12-22 02:30:09,754 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:09,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:09,754 INFO L85 PathProgramCache]: Analyzing trace with hash -379299178, now seen corresponding path program 1 times [2023-12-22 02:30:09,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:09,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274524131] [2023-12-22 02:30:09,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:09,755 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 [2023-12-22 02:30:09,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:09,756 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) [2023-12-22 02:30:09,760 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 [2023-12-22 02:30:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:09,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:09,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:09,827 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 02:30:09,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:09,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:09,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274524131] [2023-12-22 02:30:09,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274524131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:09,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:09,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:09,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139734037] [2023-12-22 02:30:09,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:09,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:30:09,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:09,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:30:09,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:09,828 INFO L87 Difference]: Start difference. First operand 787 states and 1087 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-22 02:30:09,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:09,900 INFO L93 Difference]: Finished difference Result 1204 states and 1656 transitions. [2023-12-22 02:30:09,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:30:09,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-22 02:30:09,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:09,903 INFO L225 Difference]: With dead ends: 1204 [2023-12-22 02:30:09,903 INFO L226 Difference]: Without dead ends: 694 [2023-12-22 02:30:09,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:09,904 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 2 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:09,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1033 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:30:09,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2023-12-22 02:30:09,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 688. [2023-12-22 02:30:09,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 599 states have (on average 1.3689482470784642) internal successors, (820), 608 states have internal predecessors, (820), 55 states have call successors, (55), 29 states have call predecessors, (55), 32 states have return successors, (73), 51 states have call predecessors, (73), 53 states have call successors, (73) [2023-12-22 02:30:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 948 transitions. [2023-12-22 02:30:09,924 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 948 transitions. Word has length 60 [2023-12-22 02:30:09,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:09,924 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 948 transitions. [2023-12-22 02:30:09,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-22 02:30:09,924 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 948 transitions. [2023-12-22 02:30:09,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-22 02:30:09,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:09,925 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:09,932 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 [2023-12-22 02:30:10,128 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 [2023-12-22 02:30:10,128 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:10,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:10,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1418340438, now seen corresponding path program 1 times [2023-12-22 02:30:10,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:10,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892637052] [2023-12-22 02:30:10,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:10,129 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 [2023-12-22 02:30:10,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:10,130 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) [2023-12-22 02:30:10,133 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 [2023-12-22 02:30:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:10,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:10,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:10,251 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:10,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:30:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-22 02:30:10,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:10,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892637052] [2023-12-22 02:30:10,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892637052] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 02:30:10,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 02:30:10,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2023-12-22 02:30:10,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971468375] [2023-12-22 02:30:10,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:10,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:30:10,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:10,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:30:10,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:10,293 INFO L87 Difference]: Start difference. First operand 688 states and 948 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-22 02:30:10,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:10,430 INFO L93 Difference]: Finished difference Result 737 states and 1009 transitions. [2023-12-22 02:30:10,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:30:10,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2023-12-22 02:30:10,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:10,433 INFO L225 Difference]: With dead ends: 737 [2023-12-22 02:30:10,433 INFO L226 Difference]: Without dead ends: 734 [2023-12-22 02:30:10,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:10,435 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 663 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:10,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 418 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:30:10,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2023-12-22 02:30:10,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 687. [2023-12-22 02:30:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 599 states have (on average 1.3656093489148582) internal successors, (818), 607 states have internal predecessors, (818), 54 states have call successors, (54), 29 states have call predecessors, (54), 32 states have return successors, (73), 51 states have call predecessors, (73), 53 states have call successors, (73) [2023-12-22 02:30:10,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 945 transitions. [2023-12-22 02:30:10,461 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 945 transitions. Word has length 60 [2023-12-22 02:30:10,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:10,462 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 945 transitions. [2023-12-22 02:30:10,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-22 02:30:10,463 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 945 transitions. [2023-12-22 02:30:10,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-22 02:30:10,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:10,464 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:10,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-22 02:30:10,666 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 [2023-12-22 02:30:10,667 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:10,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:10,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1017995321, now seen corresponding path program 1 times [2023-12-22 02:30:10,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:10,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235125942] [2023-12-22 02:30:10,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:10,668 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 [2023-12-22 02:30:10,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:10,669 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) [2023-12-22 02:30:10,670 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 [2023-12-22 02:30:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:10,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 02:30:10,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:10,962 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:10,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:30:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-22 02:30:11,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:11,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235125942] [2023-12-22 02:30:11,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235125942] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:30:11,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:30:11,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2023-12-22 02:30:11,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818779575] [2023-12-22 02:30:11,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:30:11,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 02:30:11,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:11,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 02:30:11,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:30:11,033 INFO L87 Difference]: Start difference. First operand 687 states and 945 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-22 02:30:11,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:11,357 INFO L93 Difference]: Finished difference Result 1406 states and 1883 transitions. [2023-12-22 02:30:11,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 02:30:11,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 61 [2023-12-22 02:30:11,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:11,363 INFO L225 Difference]: With dead ends: 1406 [2023-12-22 02:30:11,363 INFO L226 Difference]: Without dead ends: 1403 [2023-12-22 02:30:11,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:30:11,367 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 773 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:11,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 1621 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 02:30:11,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2023-12-22 02:30:11,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 990. [2023-12-22 02:30:11,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 866 states have (on average 1.3441108545034641) internal successors, (1164), 880 states have internal predecessors, (1164), 73 states have call successors, (73), 42 states have call predecessors, (73), 49 states have return successors, (104), 68 states have call predecessors, (104), 72 states have call successors, (104) [2023-12-22 02:30:11,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1341 transitions. [2023-12-22 02:30:11,452 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1341 transitions. Word has length 61 [2023-12-22 02:30:11,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:11,452 INFO L495 AbstractCegarLoop]: Abstraction has 990 states and 1341 transitions. [2023-12-22 02:30:11,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-22 02:30:11,452 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1341 transitions. [2023-12-22 02:30:11,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 02:30:11,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:11,455 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:11,459 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 [2023-12-22 02:30:11,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:11,659 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:11,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:11,659 INFO L85 PathProgramCache]: Analyzing trace with hash -825354880, now seen corresponding path program 2 times [2023-12-22 02:30:11,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:11,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371313619] [2023-12-22 02:30:11,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 02:30:11,660 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 [2023-12-22 02:30:11,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:11,661 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:30:11,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-22 02:30:11,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-22 02:30:11,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 02:30:11,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:30:11,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-22 02:30:11,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:11,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:11,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371313619] [2023-12-22 02:30:11,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371313619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:11,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:11,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:30:11,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183240648] [2023-12-22 02:30:11,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:11,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:30:11,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:11,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:30:11,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:11,758 INFO L87 Difference]: Start difference. First operand 990 states and 1341 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-22 02:30:11,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:11,844 INFO L93 Difference]: Finished difference Result 1545 states and 2072 transitions. [2023-12-22 02:30:11,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:30:11,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2023-12-22 02:30:11,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:11,847 INFO L225 Difference]: With dead ends: 1545 [2023-12-22 02:30:11,847 INFO L226 Difference]: Without dead ends: 894 [2023-12-22 02:30:11,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:11,849 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 340 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:11,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 435 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:30:11,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2023-12-22 02:30:11,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 882. [2023-12-22 02:30:11,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 771 states have (on average 1.3437094682230868) internal successors, (1036), 785 states have internal predecessors, (1036), 66 states have call successors, (66), 37 states have call predecessors, (66), 43 states have return successors, (93), 60 states have call predecessors, (93), 65 states have call successors, (93) [2023-12-22 02:30:11,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1195 transitions. [2023-12-22 02:30:11,896 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1195 transitions. Word has length 78 [2023-12-22 02:30:11,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:11,896 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1195 transitions. [2023-12-22 02:30:11,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-22 02:30:11,896 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1195 transitions. [2023-12-22 02:30:11,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-22 02:30:11,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:11,898 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:11,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-22 02:30:12,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:12,102 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:12,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:12,102 INFO L85 PathProgramCache]: Analyzing trace with hash -525884382, now seen corresponding path program 1 times [2023-12-22 02:30:12,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:12,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075772136] [2023-12-22 02:30:12,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:12,103 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 [2023-12-22 02:30:12,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:12,104 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) [2023-12-22 02:30:12,133 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 [2023-12-22 02:30:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:12,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:12,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:12,211 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-22 02:30:12,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:12,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:12,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075772136] [2023-12-22 02:30:12,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075772136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:12,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:12,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:12,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200429879] [2023-12-22 02:30:12,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:12,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:30:12,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:12,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:30:12,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:12,212 INFO L87 Difference]: Start difference. First operand 882 states and 1195 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:12,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:12,468 INFO L93 Difference]: Finished difference Result 1606 states and 2136 transitions. [2023-12-22 02:30:12,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:30:12,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-22 02:30:12,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:12,472 INFO L225 Difference]: With dead ends: 1606 [2023-12-22 02:30:12,472 INFO L226 Difference]: Without dead ends: 915 [2023-12-22 02:30:12,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:12,475 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 459 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:12,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 432 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 02:30:12,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2023-12-22 02:30:12,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 882. [2023-12-22 02:30:12,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 771 states have (on average 1.324254215304799) internal successors, (1021), 785 states have internal predecessors, (1021), 66 states have call successors, (66), 37 states have call predecessors, (66), 43 states have return successors, (92), 60 states have call predecessors, (92), 65 states have call successors, (92) [2023-12-22 02:30:12,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1179 transitions. [2023-12-22 02:30:12,544 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1179 transitions. Word has length 92 [2023-12-22 02:30:12,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:12,545 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1179 transitions. [2023-12-22 02:30:12,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:12,545 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1179 transitions. [2023-12-22 02:30:12,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:12,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:12,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:12,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-22 02:30:12,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:12,750 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:12,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:12,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1816193057, now seen corresponding path program 1 times [2023-12-22 02:30:12,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:12,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577832233] [2023-12-22 02:30:12,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:12,751 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 [2023-12-22 02:30:12,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:12,752 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:30:12,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-22 02:30:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:12,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:12,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:12,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:12,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:12,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577832233] [2023-12-22 02:30:12,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577832233] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:12,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:12,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:12,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946505464] [2023-12-22 02:30:12,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:12,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:30:12,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:12,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:30:12,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:12,869 INFO L87 Difference]: Start difference. First operand 882 states and 1179 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:13,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:13,255 INFO L93 Difference]: Finished difference Result 1251 states and 1766 transitions. [2023-12-22 02:30:13,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:30:13,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-22 02:30:13,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:13,259 INFO L225 Difference]: With dead ends: 1251 [2023-12-22 02:30:13,259 INFO L226 Difference]: Without dead ends: 1077 [2023-12-22 02:30:13,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:30:13,260 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 631 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:13,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 933 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:30:13,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2023-12-22 02:30:13,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1062. [2023-12-22 02:30:13,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 930 states have (on average 1.3720430107526882) internal successors, (1276), 945 states have internal predecessors, (1276), 80 states have call successors, (80), 43 states have call predecessors, (80), 50 states have return successors, (107), 74 states have call predecessors, (107), 79 states have call successors, (107) [2023-12-22 02:30:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1463 transitions. [2023-12-22 02:30:13,301 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1463 transitions. Word has length 91 [2023-12-22 02:30:13,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:13,301 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 1463 transitions. [2023-12-22 02:30:13,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:13,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1463 transitions. [2023-12-22 02:30:13,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:13,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:13,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:13,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-22 02:30:13,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:13,506 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:13,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:13,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1065505243, now seen corresponding path program 1 times [2023-12-22 02:30:13,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:13,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445235291] [2023-12-22 02:30:13,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:13,507 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 [2023-12-22 02:30:13,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:13,508 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) [2023-12-22 02:30:13,512 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 [2023-12-22 02:30:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:13,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:13,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:13,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:13,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:13,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445235291] [2023-12-22 02:30:13,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445235291] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:13,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:13,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:13,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729430893] [2023-12-22 02:30:13,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:13,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:30:13,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:13,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:30:13,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:13,635 INFO L87 Difference]: Start difference. First operand 1062 states and 1463 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:13,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:13,903 INFO L93 Difference]: Finished difference Result 1416 states and 2026 transitions. [2023-12-22 02:30:13,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:30:13,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-22 02:30:13,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:13,907 INFO L225 Difference]: With dead ends: 1416 [2023-12-22 02:30:13,907 INFO L226 Difference]: Without dead ends: 1062 [2023-12-22 02:30:13,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:30:13,909 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 479 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:13,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 589 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 02:30:13,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2023-12-22 02:30:13,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1062. [2023-12-22 02:30:13,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 930 states have (on average 1.364516129032258) internal successors, (1269), 945 states have internal predecessors, (1269), 80 states have call successors, (80), 43 states have call predecessors, (80), 50 states have return successors, (107), 74 states have call predecessors, (107), 79 states have call successors, (107) [2023-12-22 02:30:13,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1456 transitions. [2023-12-22 02:30:13,959 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1456 transitions. Word has length 91 [2023-12-22 02:30:13,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:13,959 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 1456 transitions. [2023-12-22 02:30:13,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:13,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1456 transitions. [2023-12-22 02:30:13,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:13,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:13,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:13,967 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 [2023-12-22 02:30:14,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:14,165 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:14,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:14,166 INFO L85 PathProgramCache]: Analyzing trace with hash 642652065, now seen corresponding path program 1 times [2023-12-22 02:30:14,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:14,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695982235] [2023-12-22 02:30:14,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:14,166 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 [2023-12-22 02:30:14,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:14,167 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 02:30:14,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-22 02:30:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:14,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:14,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:14,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:14,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:14,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695982235] [2023-12-22 02:30:14,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695982235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:14,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:14,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:14,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298440990] [2023-12-22 02:30:14,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:14,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:30:14,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:14,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:30:14,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:14,292 INFO L87 Difference]: Start difference. First operand 1062 states and 1456 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:14,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:14,545 INFO L93 Difference]: Finished difference Result 1416 states and 2012 transitions. [2023-12-22 02:30:14,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:30:14,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-22 02:30:14,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:14,549 INFO L225 Difference]: With dead ends: 1416 [2023-12-22 02:30:14,549 INFO L226 Difference]: Without dead ends: 1062 [2023-12-22 02:30:14,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:30:14,550 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 472 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:14,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 582 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 02:30:14,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2023-12-22 02:30:14,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1062. [2023-12-22 02:30:14,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 930 states have (on average 1.356989247311828) internal successors, (1262), 945 states have internal predecessors, (1262), 80 states have call successors, (80), 43 states have call predecessors, (80), 50 states have return successors, (107), 74 states have call predecessors, (107), 79 states have call successors, (107) [2023-12-22 02:30:14,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1449 transitions. [2023-12-22 02:30:14,623 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1449 transitions. Word has length 91 [2023-12-22 02:30:14,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:14,623 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 1449 transitions. [2023-12-22 02:30:14,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:14,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1449 transitions. [2023-12-22 02:30:14,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:14,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:14,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:14,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-22 02:30:14,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:14,829 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:14,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:14,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1591914525, now seen corresponding path program 1 times [2023-12-22 02:30:14,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:14,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558544627] [2023-12-22 02:30:14,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:14,830 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 [2023-12-22 02:30:14,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:14,832 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) [2023-12-22 02:30:14,861 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 [2023-12-22 02:30:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:14,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:14,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:14,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:14,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:14,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558544627] [2023-12-22 02:30:14,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558544627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:14,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:14,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:14,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084840498] [2023-12-22 02:30:14,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:14,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:30:14,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:14,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:30:14,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:14,942 INFO L87 Difference]: Start difference. First operand 1062 states and 1449 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:15,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:15,234 INFO L93 Difference]: Finished difference Result 1416 states and 1998 transitions. [2023-12-22 02:30:15,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:30:15,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-22 02:30:15,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:15,239 INFO L225 Difference]: With dead ends: 1416 [2023-12-22 02:30:15,239 INFO L226 Difference]: Without dead ends: 1062 [2023-12-22 02:30:15,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:30:15,241 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 466 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:15,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 575 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 02:30:15,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2023-12-22 02:30:15,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1062. [2023-12-22 02:30:15,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 930 states have (on average 1.3494623655913978) internal successors, (1255), 945 states have internal predecessors, (1255), 80 states have call successors, (80), 43 states have call predecessors, (80), 50 states have return successors, (107), 74 states have call predecessors, (107), 79 states have call successors, (107) [2023-12-22 02:30:15,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1442 transitions. [2023-12-22 02:30:15,323 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1442 transitions. Word has length 91 [2023-12-22 02:30:15,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:15,323 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 1442 transitions. [2023-12-22 02:30:15,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:15,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1442 transitions. [2023-12-22 02:30:15,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:15,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:15,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:15,331 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 (16)] Ended with exit code 0 [2023-12-22 02:30:15,529 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 [2023-12-22 02:30:15,529 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:15,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:15,530 INFO L85 PathProgramCache]: Analyzing trace with hash -178579423, now seen corresponding path program 1 times [2023-12-22 02:30:15,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:15,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726432255] [2023-12-22 02:30:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:15,530 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 [2023-12-22 02:30:15,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:15,531 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2023-12-22 02:30:15,535 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 (17)] Waiting until timeout for monitored process [2023-12-22 02:30:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:15,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:15,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:15,644 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:15,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:15,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726432255] [2023-12-22 02:30:15,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726432255] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:15,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:15,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:15,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864695907] [2023-12-22 02:30:15,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:15,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:30:15,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:15,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:30:15,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:15,645 INFO L87 Difference]: Start difference. First operand 1062 states and 1442 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:15,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:15,919 INFO L93 Difference]: Finished difference Result 1416 states and 1984 transitions. [2023-12-22 02:30:15,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:30:15,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-22 02:30:15,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:15,922 INFO L225 Difference]: With dead ends: 1416 [2023-12-22 02:30:15,922 INFO L226 Difference]: Without dead ends: 1062 [2023-12-22 02:30:15,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:30:15,924 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 460 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:15,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 568 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 02:30:15,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2023-12-22 02:30:15,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1062. [2023-12-22 02:30:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 930 states have (on average 1.3419354838709678) internal successors, (1248), 945 states have internal predecessors, (1248), 80 states have call successors, (80), 43 states have call predecessors, (80), 50 states have return successors, (107), 74 states have call predecessors, (107), 79 states have call successors, (107) [2023-12-22 02:30:15,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1435 transitions. [2023-12-22 02:30:15,980 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1435 transitions. Word has length 91 [2023-12-22 02:30:15,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:15,980 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 1435 transitions. [2023-12-22 02:30:15,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:15,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1435 transitions. [2023-12-22 02:30:15,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:15,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:15,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:15,987 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 (17)] Ended with exit code 0 [2023-12-22 02:30:16,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:16,186 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:16,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:16,186 INFO L85 PathProgramCache]: Analyzing trace with hash -235692131, now seen corresponding path program 1 times [2023-12-22 02:30:16,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:16,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491507236] [2023-12-22 02:30:16,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:16,186 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 [2023-12-22 02:30:16,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:16,188 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) [2023-12-22 02:30:16,219 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 [2023-12-22 02:30:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:16,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:16,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:16,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:16,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:16,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491507236] [2023-12-22 02:30:16,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491507236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:16,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:16,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:16,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22959773] [2023-12-22 02:30:16,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:16,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:30:16,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:16,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:30:16,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:16,326 INFO L87 Difference]: Start difference. First operand 1062 states and 1435 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:16,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:16,657 INFO L93 Difference]: Finished difference Result 1498 states and 2102 transitions. [2023-12-22 02:30:16,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:30:16,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-22 02:30:16,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:16,660 INFO L225 Difference]: With dead ends: 1498 [2023-12-22 02:30:16,660 INFO L226 Difference]: Without dead ends: 1144 [2023-12-22 02:30:16,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:30:16,662 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 505 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:16,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 562 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:30:16,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2023-12-22 02:30:16,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1144. [2023-12-22 02:30:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1006 states have (on average 1.3429423459244534) internal successors, (1351), 1021 states have internal predecessors, (1351), 82 states have call successors, (82), 47 states have call predecessors, (82), 54 states have return successors, (109), 76 states have call predecessors, (109), 81 states have call successors, (109) [2023-12-22 02:30:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1542 transitions. [2023-12-22 02:30:16,718 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1542 transitions. Word has length 91 [2023-12-22 02:30:16,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:16,718 INFO L495 AbstractCegarLoop]: Abstraction has 1144 states and 1542 transitions. [2023-12-22 02:30:16,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:16,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1542 transitions. [2023-12-22 02:30:16,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:16,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:16,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:16,735 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 [2023-12-22 02:30:16,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-22 02:30:16,924 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:16,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:16,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1203042785, now seen corresponding path program 1 times [2023-12-22 02:30:16,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:16,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203836991] [2023-12-22 02:30:16,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:16,925 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 [2023-12-22 02:30:16,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:16,927 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2023-12-22 02:30:16,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-22 02:30:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:17,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:17,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:17,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:17,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:17,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:17,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203836991] [2023-12-22 02:30:17,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203836991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:17,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:17,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:17,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364543770] [2023-12-22 02:30:17,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:17,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:30:17,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:17,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:30:17,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:17,040 INFO L87 Difference]: Start difference. First operand 1144 states and 1542 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:17,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:17,379 INFO L93 Difference]: Finished difference Result 1662 states and 2316 transitions. [2023-12-22 02:30:17,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:30:17,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-22 02:30:17,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:17,383 INFO L225 Difference]: With dead ends: 1662 [2023-12-22 02:30:17,383 INFO L226 Difference]: Without dead ends: 1226 [2023-12-22 02:30:17,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:30:17,384 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 498 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:17,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 555 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:30:17,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2023-12-22 02:30:17,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1226. [2023-12-22 02:30:17,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1082 states have (on average 1.3401109057301295) internal successors, (1450), 1097 states have internal predecessors, (1450), 84 states have call successors, (84), 51 states have call predecessors, (84), 58 states have return successors, (111), 78 states have call predecessors, (111), 83 states have call successors, (111) [2023-12-22 02:30:17,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1645 transitions. [2023-12-22 02:30:17,444 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1645 transitions. Word has length 91 [2023-12-22 02:30:17,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:17,444 INFO L495 AbstractCegarLoop]: Abstraction has 1226 states and 1645 transitions. [2023-12-22 02:30:17,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:17,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1645 transitions. [2023-12-22 02:30:17,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:17,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:17,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:17,451 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 (19)] Forceful destruction successful, exit code 0 [2023-12-22 02:30:17,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:17,651 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:17,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:17,652 INFO L85 PathProgramCache]: Analyzing trace with hash 932020282, now seen corresponding path program 1 times [2023-12-22 02:30:17,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:17,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503119926] [2023-12-22 02:30:17,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:17,653 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 [2023-12-22 02:30:17,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:17,654 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) [2023-12-22 02:30:17,660 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 [2023-12-22 02:30:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:17,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:17,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:17,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:17,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:17,779 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:17,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503119926] [2023-12-22 02:30:17,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503119926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:17,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:17,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:17,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853957065] [2023-12-22 02:30:17,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:17,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:30:17,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:17,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:30:17,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:17,781 INFO L87 Difference]: Start difference. First operand 1226 states and 1645 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:18,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:18,137 INFO L93 Difference]: Finished difference Result 1826 states and 2522 transitions. [2023-12-22 02:30:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:30:18,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-22 02:30:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:18,143 INFO L225 Difference]: With dead ends: 1826 [2023-12-22 02:30:18,143 INFO L226 Difference]: Without dead ends: 1308 [2023-12-22 02:30:18,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:30:18,144 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 492 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:18,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 548 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:30:18,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2023-12-22 02:30:18,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1308. [2023-12-22 02:30:18,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 1158 states have (on average 1.33419689119171) internal successors, (1545), 1173 states have internal predecessors, (1545), 86 states have call successors, (86), 55 states have call predecessors, (86), 62 states have return successors, (113), 80 states have call predecessors, (113), 85 states have call successors, (113) [2023-12-22 02:30:18,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 1744 transitions. [2023-12-22 02:30:18,213 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 1744 transitions. Word has length 91 [2023-12-22 02:30:18,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:18,213 INFO L495 AbstractCegarLoop]: Abstraction has 1308 states and 1744 transitions. [2023-12-22 02:30:18,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:18,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 1744 transitions. [2023-12-22 02:30:18,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:18,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:18,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:18,228 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 [2023-12-22 02:30:18,419 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 [2023-12-22 02:30:18,419 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:18,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:18,419 INFO L85 PathProgramCache]: Analyzing trace with hash 862095934, now seen corresponding path program 1 times [2023-12-22 02:30:18,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:18,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088721735] [2023-12-22 02:30:18,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:18,420 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 [2023-12-22 02:30:18,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:18,421 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2023-12-22 02:30:18,424 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 (21)] Waiting until timeout for monitored process [2023-12-22 02:30:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:18,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:18,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:18,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:18,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:18,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088721735] [2023-12-22 02:30:18,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088721735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:18,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:18,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:18,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002835057] [2023-12-22 02:30:18,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:18,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:30:18,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:18,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:30:18,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:18,531 INFO L87 Difference]: Start difference. First operand 1308 states and 1744 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:18,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:18,961 INFO L93 Difference]: Finished difference Result 1990 states and 2720 transitions. [2023-12-22 02:30:18,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:30:18,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-22 02:30:18,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:18,965 INFO L225 Difference]: With dead ends: 1990 [2023-12-22 02:30:18,965 INFO L226 Difference]: Without dead ends: 1390 [2023-12-22 02:30:18,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:30:18,967 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 485 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:18,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 541 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:30:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2023-12-22 02:30:19,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1390. [2023-12-22 02:30:19,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1234 states have (on average 1.325769854132901) internal successors, (1636), 1249 states have internal predecessors, (1636), 88 states have call successors, (88), 59 states have call predecessors, (88), 66 states have return successors, (115), 82 states have call predecessors, (115), 87 states have call successors, (115) [2023-12-22 02:30:19,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1839 transitions. [2023-12-22 02:30:19,038 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1839 transitions. Word has length 91 [2023-12-22 02:30:19,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:19,038 INFO L495 AbstractCegarLoop]: Abstraction has 1390 states and 1839 transitions. [2023-12-22 02:30:19,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:19,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1839 transitions. [2023-12-22 02:30:19,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:19,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:19,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:19,044 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 (21)] Forceful destruction successful, exit code 0 [2023-12-22 02:30:19,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:19,244 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:19,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:19,245 INFO L85 PathProgramCache]: Analyzing trace with hash -309617127, now seen corresponding path program 1 times [2023-12-22 02:30:19,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:19,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145752369] [2023-12-22 02:30:19,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:19,245 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 [2023-12-22 02:30:19,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:19,246 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) [2023-12-22 02:30:19,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-22 02:30:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:19,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:19,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:19,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:19,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:19,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:19,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145752369] [2023-12-22 02:30:19,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145752369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:19,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:19,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:19,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494374362] [2023-12-22 02:30:19,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:19,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:30:19,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:19,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:30:19,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:19,377 INFO L87 Difference]: Start difference. First operand 1390 states and 1839 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:19,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:19,755 INFO L93 Difference]: Finished difference Result 2154 states and 2910 transitions. [2023-12-22 02:30:19,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:30:19,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-22 02:30:19,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:19,760 INFO L225 Difference]: With dead ends: 2154 [2023-12-22 02:30:19,760 INFO L226 Difference]: Without dead ends: 1472 [2023-12-22 02:30:19,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:30:19,764 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 477 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:19,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 534 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:30:19,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2023-12-22 02:30:19,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1472. [2023-12-22 02:30:19,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1310 states have (on average 1.3152671755725192) internal successors, (1723), 1325 states have internal predecessors, (1723), 90 states have call successors, (90), 63 states have call predecessors, (90), 70 states have return successors, (117), 84 states have call predecessors, (117), 89 states have call successors, (117) [2023-12-22 02:30:19,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 1930 transitions. [2023-12-22 02:30:19,848 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 1930 transitions. Word has length 91 [2023-12-22 02:30:19,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:19,849 INFO L495 AbstractCegarLoop]: Abstraction has 1472 states and 1930 transitions. [2023-12-22 02:30:19,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:19,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 1930 transitions. [2023-12-22 02:30:19,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:19,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:19,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:19,857 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 [2023-12-22 02:30:20,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-22 02:30:20,055 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:20,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:20,055 INFO L85 PathProgramCache]: Analyzing trace with hash -505578572, now seen corresponding path program 1 times [2023-12-22 02:30:20,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:20,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652537020] [2023-12-22 02:30:20,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:20,056 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 [2023-12-22 02:30:20,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:20,057 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2023-12-22 02:30:20,058 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 (23)] Waiting until timeout for monitored process [2023-12-22 02:30:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:20,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:20,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:20,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:20,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:20,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:20,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652537020] [2023-12-22 02:30:20,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652537020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:20,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:20,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:20,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357747536] [2023-12-22 02:30:20,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:20,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:30:20,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:20,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:30:20,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:20,142 INFO L87 Difference]: Start difference. First operand 1472 states and 1930 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:20,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:20,273 INFO L93 Difference]: Finished difference Result 2303 states and 3071 transitions. [2023-12-22 02:30:20,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:30:20,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-22 02:30:20,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:20,277 INFO L225 Difference]: With dead ends: 2303 [2023-12-22 02:30:20,277 INFO L226 Difference]: Without dead ends: 1540 [2023-12-22 02:30:20,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:20,280 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 47 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:20,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 939 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:30:20,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2023-12-22 02:30:20,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1476. [2023-12-22 02:30:20,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1314 states have (on average 1.3066971080669711) internal successors, (1717), 1329 states have internal predecessors, (1717), 90 states have call successors, (90), 63 states have call predecessors, (90), 70 states have return successors, (117), 84 states have call predecessors, (117), 89 states have call successors, (117) [2023-12-22 02:30:20,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1924 transitions. [2023-12-22 02:30:20,359 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1924 transitions. Word has length 91 [2023-12-22 02:30:20,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:20,359 INFO L495 AbstractCegarLoop]: Abstraction has 1476 states and 1924 transitions. [2023-12-22 02:30:20,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:20,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1924 transitions. [2023-12-22 02:30:20,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:20,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:20,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:20,364 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 (23)] Forceful destruction successful, exit code 0 [2023-12-22 02:30:20,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:20,565 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:20,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:20,565 INFO L85 PathProgramCache]: Analyzing trace with hash -71849486, now seen corresponding path program 1 times [2023-12-22 02:30:20,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:20,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828195164] [2023-12-22 02:30:20,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:20,566 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 [2023-12-22 02:30:20,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:20,567 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) [2023-12-22 02:30:20,596 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 [2023-12-22 02:30:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:20,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:20,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:20,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:20,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:20,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828195164] [2023-12-22 02:30:20,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828195164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:20,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:20,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:20,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798620358] [2023-12-22 02:30:20,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:20,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:30:20,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:20,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:30:20,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:20,657 INFO L87 Difference]: Start difference. First operand 1476 states and 1924 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:20,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:20,794 INFO L93 Difference]: Finished difference Result 2299 states and 3043 transitions. [2023-12-22 02:30:20,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:30:20,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-22 02:30:20,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:20,798 INFO L225 Difference]: With dead ends: 2299 [2023-12-22 02:30:20,799 INFO L226 Difference]: Without dead ends: 1532 [2023-12-22 02:30:20,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:20,800 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 38 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:20,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 943 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:30:20,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2023-12-22 02:30:20,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1480. [2023-12-22 02:30:20,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1318 states have (on average 1.2981790591805766) internal successors, (1711), 1333 states have internal predecessors, (1711), 90 states have call successors, (90), 63 states have call predecessors, (90), 70 states have return successors, (117), 84 states have call predecessors, (117), 89 states have call successors, (117) [2023-12-22 02:30:20,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 1918 transitions. [2023-12-22 02:30:20,886 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 1918 transitions. Word has length 91 [2023-12-22 02:30:20,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:20,887 INFO L495 AbstractCegarLoop]: Abstraction has 1480 states and 1918 transitions. [2023-12-22 02:30:20,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:20,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 1918 transitions. [2023-12-22 02:30:20,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:20,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:20,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:20,893 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 [2023-12-22 02:30:21,092 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 [2023-12-22 02:30:21,093 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:21,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:21,093 INFO L85 PathProgramCache]: Analyzing trace with hash 372051188, now seen corresponding path program 1 times [2023-12-22 02:30:21,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:21,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110979959] [2023-12-22 02:30:21,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:21,093 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 [2023-12-22 02:30:21,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:21,094 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-12-22 02:30:21,095 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 (25)] Waiting until timeout for monitored process [2023-12-22 02:30:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:21,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:21,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:21,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:21,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:21,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110979959] [2023-12-22 02:30:21,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110979959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:21,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:21,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:21,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581489969] [2023-12-22 02:30:21,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:21,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:30:21,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:21,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:30:21,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:21,184 INFO L87 Difference]: Start difference. First operand 1480 states and 1918 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:21,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:21,348 INFO L93 Difference]: Finished difference Result 2295 states and 3015 transitions. [2023-12-22 02:30:21,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:30:21,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-22 02:30:21,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:21,353 INFO L225 Difference]: With dead ends: 2295 [2023-12-22 02:30:21,353 INFO L226 Difference]: Without dead ends: 1524 [2023-12-22 02:30:21,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:21,355 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 29 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:21,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 941 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:30:21,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2023-12-22 02:30:21,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1484. [2023-12-22 02:30:21,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1322 states have (on average 1.2897125567322238) internal successors, (1705), 1337 states have internal predecessors, (1705), 90 states have call successors, (90), 63 states have call predecessors, (90), 70 states have return successors, (117), 84 states have call predecessors, (117), 89 states have call successors, (117) [2023-12-22 02:30:21,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 1912 transitions. [2023-12-22 02:30:21,447 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 1912 transitions. Word has length 91 [2023-12-22 02:30:21,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:21,447 INFO L495 AbstractCegarLoop]: Abstraction has 1484 states and 1912 transitions. [2023-12-22 02:30:21,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:21,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 1912 transitions. [2023-12-22 02:30:21,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:21,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:21,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:21,458 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 (25)] Forceful destruction successful, exit code 0 [2023-12-22 02:30:21,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:21,653 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:21,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:21,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1983754062, now seen corresponding path program 1 times [2023-12-22 02:30:21,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:21,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677974457] [2023-12-22 02:30:21,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:21,653 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 [2023-12-22 02:30:21,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:21,654 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) [2023-12-22 02:30:21,655 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 [2023-12-22 02:30:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:21,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:21,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:21,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:21,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:21,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677974457] [2023-12-22 02:30:21,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677974457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:21,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:21,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:21,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134784122] [2023-12-22 02:30:21,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:21,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:30:21,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:21,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:30:21,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:21,738 INFO L87 Difference]: Start difference. First operand 1484 states and 1912 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:21,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:21,856 INFO L93 Difference]: Finished difference Result 2291 states and 2987 transitions. [2023-12-22 02:30:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:30:21,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-22 02:30:21,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:21,867 INFO L225 Difference]: With dead ends: 2291 [2023-12-22 02:30:21,867 INFO L226 Difference]: Without dead ends: 1516 [2023-12-22 02:30:21,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:21,869 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 20 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:21,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 942 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:30:21,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2023-12-22 02:30:21,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1488. [2023-12-22 02:30:21,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1326 states have (on average 1.2812971342383108) internal successors, (1699), 1341 states have internal predecessors, (1699), 90 states have call successors, (90), 63 states have call predecessors, (90), 70 states have return successors, (117), 84 states have call predecessors, (117), 89 states have call successors, (117) [2023-12-22 02:30:21,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1906 transitions. [2023-12-22 02:30:21,956 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1906 transitions. Word has length 91 [2023-12-22 02:30:21,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:21,956 INFO L495 AbstractCegarLoop]: Abstraction has 1488 states and 1906 transitions. [2023-12-22 02:30:21,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:21,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1906 transitions. [2023-12-22 02:30:21,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:21,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:21,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:21,964 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 [2023-12-22 02:30:22,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-22 02:30:22,166 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:22,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:22,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1413819956, now seen corresponding path program 1 times [2023-12-22 02:30:22,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:22,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324957393] [2023-12-22 02:30:22,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:22,167 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 [2023-12-22 02:30:22,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:22,168 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2023-12-22 02:30:22,169 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 (27)] Waiting until timeout for monitored process [2023-12-22 02:30:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:22,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:22,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:22,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:22,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:22,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324957393] [2023-12-22 02:30:22,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1324957393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:22,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:22,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:22,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379225442] [2023-12-22 02:30:22,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:22,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:30:22,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:22,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:30:22,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:22,247 INFO L87 Difference]: Start difference. First operand 1488 states and 1906 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:22,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:22,366 INFO L93 Difference]: Finished difference Result 2387 states and 3093 transitions. [2023-12-22 02:30:22,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:30:22,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-22 02:30:22,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:22,370 INFO L225 Difference]: With dead ends: 2387 [2023-12-22 02:30:22,370 INFO L226 Difference]: Without dead ends: 1608 [2023-12-22 02:30:22,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:22,372 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 11 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:22,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 943 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:30:22,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2023-12-22 02:30:22,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1512. [2023-12-22 02:30:22,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1350 states have (on average 1.2762962962962963) internal successors, (1723), 1365 states have internal predecessors, (1723), 90 states have call successors, (90), 63 states have call predecessors, (90), 70 states have return successors, (117), 84 states have call predecessors, (117), 89 states have call successors, (117) [2023-12-22 02:30:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 1930 transitions. [2023-12-22 02:30:22,462 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 1930 transitions. Word has length 91 [2023-12-22 02:30:22,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:22,462 INFO L495 AbstractCegarLoop]: Abstraction has 1512 states and 1930 transitions. [2023-12-22 02:30:22,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 1930 transitions. [2023-12-22 02:30:22,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:22,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:22,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:22,469 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 (27)] Ended with exit code 0 [2023-12-22 02:30:22,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:22,667 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:22,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:22,667 INFO L85 PathProgramCache]: Analyzing trace with hash 384460658, now seen corresponding path program 1 times [2023-12-22 02:30:22,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:22,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872508521] [2023-12-22 02:30:22,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:22,668 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 [2023-12-22 02:30:22,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:22,669 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) [2023-12-22 02:30:22,669 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 [2023-12-22 02:30:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:22,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:30:22,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:22,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:22,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:22,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872508521] [2023-12-22 02:30:22,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872508521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:22,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:22,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:22,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267056540] [2023-12-22 02:30:22,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:22,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:30:22,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:22,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:30:22,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:22,746 INFO L87 Difference]: Start difference. First operand 1512 states and 1930 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:22,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:22,857 INFO L93 Difference]: Finished difference Result 2323 states and 2989 transitions. [2023-12-22 02:30:22,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:30:22,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-22 02:30:22,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:22,860 INFO L225 Difference]: With dead ends: 2323 [2023-12-22 02:30:22,860 INFO L226 Difference]: Without dead ends: 1520 [2023-12-22 02:30:22,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:22,862 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 2 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:22,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 943 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:30:22,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2023-12-22 02:30:22,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1516. [2023-12-22 02:30:22,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1354 states have (on average 1.2680945347119645) internal successors, (1717), 1369 states have internal predecessors, (1717), 90 states have call successors, (90), 63 states have call predecessors, (90), 70 states have return successors, (117), 84 states have call predecessors, (117), 89 states have call successors, (117) [2023-12-22 02:30:22,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 1924 transitions. [2023-12-22 02:30:22,931 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 1924 transitions. Word has length 91 [2023-12-22 02:30:22,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:22,931 INFO L495 AbstractCegarLoop]: Abstraction has 1516 states and 1924 transitions. [2023-12-22 02:30:22,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:22,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 1924 transitions. [2023-12-22 02:30:22,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:22,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:22,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:22,938 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 [2023-12-22 02:30:23,136 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 [2023-12-22 02:30:23,136 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:23,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:23,137 INFO L85 PathProgramCache]: Analyzing trace with hash 312074100, now seen corresponding path program 1 times [2023-12-22 02:30:23,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:23,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509450034] [2023-12-22 02:30:23,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:23,137 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 [2023-12-22 02:30:23,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:23,138 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) [2023-12-22 02:30:23,139 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 [2023-12-22 02:30:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:23,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:30:23,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:23,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:23,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:23,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509450034] [2023-12-22 02:30:23,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509450034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:23,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:23,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:23,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315528186] [2023-12-22 02:30:23,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:23,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:30:23,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:23,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:30:23,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:23,294 INFO L87 Difference]: Start difference. First operand 1516 states and 1924 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:23,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:23,613 INFO L93 Difference]: Finished difference Result 2324 states and 2948 transitions. [2023-12-22 02:30:23,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:30:23,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-22 02:30:23,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:23,617 INFO L225 Difference]: With dead ends: 2324 [2023-12-22 02:30:23,617 INFO L226 Difference]: Without dead ends: 1516 [2023-12-22 02:30:23,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:30:23,619 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 388 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:23,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 526 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 02:30:23,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2023-12-22 02:30:23,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1516. [2023-12-22 02:30:23,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1354 states have (on average 1.2629246676514032) internal successors, (1710), 1369 states have internal predecessors, (1710), 90 states have call successors, (90), 63 states have call predecessors, (90), 70 states have return successors, (117), 84 states have call predecessors, (117), 89 states have call successors, (117) [2023-12-22 02:30:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 1917 transitions. [2023-12-22 02:30:23,696 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 1917 transitions. Word has length 91 [2023-12-22 02:30:23,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:23,696 INFO L495 AbstractCegarLoop]: Abstraction has 1516 states and 1917 transitions. [2023-12-22 02:30:23,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:23,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 1917 transitions. [2023-12-22 02:30:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:23,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:23,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:23,700 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 (29)] Ended with exit code 0 [2023-12-22 02:30:23,900 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 [2023-12-22 02:30:23,901 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:23,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:23,901 INFO L85 PathProgramCache]: Analyzing trace with hash -2059665162, now seen corresponding path program 1 times [2023-12-22 02:30:23,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:23,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980357022] [2023-12-22 02:30:23,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:23,901 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 [2023-12-22 02:30:23,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:23,902 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2023-12-22 02:30:23,903 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 (30)] Waiting until timeout for monitored process [2023-12-22 02:30:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:23,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:30:23,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:24,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:24,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:24,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980357022] [2023-12-22 02:30:24,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980357022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:24,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:24,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:24,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060458340] [2023-12-22 02:30:24,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:24,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 02:30:24,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:24,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 02:30:24,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:24,065 INFO L87 Difference]: Start difference. First operand 1516 states and 1917 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:24,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:24,424 INFO L93 Difference]: Finished difference Result 2400 states and 3038 transitions. [2023-12-22 02:30:24,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:30:24,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-22 02:30:24,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:24,427 INFO L225 Difference]: With dead ends: 2400 [2023-12-22 02:30:24,427 INFO L226 Difference]: Without dead ends: 1592 [2023-12-22 02:30:24,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:30:24,429 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 427 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:24,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 521 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:30:24,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2023-12-22 02:30:24,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1572. [2023-12-22 02:30:24,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1408 states have (on average 1.2421875) internal successors, (1749), 1423 states have internal predecessors, (1749), 90 states have call successors, (90), 65 states have call predecessors, (90), 72 states have return successors, (117), 84 states have call predecessors, (117), 89 states have call successors, (117) [2023-12-22 02:30:24,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 1956 transitions. [2023-12-22 02:30:24,510 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 1956 transitions. Word has length 91 [2023-12-22 02:30:24,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:24,510 INFO L495 AbstractCegarLoop]: Abstraction has 1572 states and 1956 transitions. [2023-12-22 02:30:24,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-22 02:30:24,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 1956 transitions. [2023-12-22 02:30:24,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 02:30:24,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:24,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:24,517 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 (30)] Forceful destruction successful, exit code 0 [2023-12-22 02:30:24,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:24,715 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:24,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:24,715 INFO L85 PathProgramCache]: Analyzing trace with hash 546358392, now seen corresponding path program 1 times [2023-12-22 02:30:24,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:24,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351621056] [2023-12-22 02:30:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:24,716 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 [2023-12-22 02:30:24,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:24,717 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) [2023-12-22 02:30:24,717 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 [2023-12-22 02:30:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:24,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:30:24,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:30:24,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:24,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:24,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351621056] [2023-12-22 02:30:24,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351621056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:24,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:24,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:30:24,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997497265] [2023-12-22 02:30:24,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:24,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:30:24,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:24,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:30:24,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:24,872 INFO L87 Difference]: Start difference. First operand 1572 states and 1956 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-22 02:30:25,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:25,037 INFO L93 Difference]: Finished difference Result 3271 states and 4043 transitions. [2023-12-22 02:30:25,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:30:25,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 91 [2023-12-22 02:30:25,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:25,041 INFO L225 Difference]: With dead ends: 3271 [2023-12-22 02:30:25,041 INFO L226 Difference]: Without dead ends: 2408 [2023-12-22 02:30:25,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:25,043 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 242 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:25,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 554 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:30:25,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2023-12-22 02:30:25,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2406. [2023-12-22 02:30:25,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2406 states, 2168 states have (on average 1.2287822878228782) internal successors, (2664), 2186 states have internal predecessors, (2664), 129 states have call successors, (129), 99 states have call predecessors, (129), 107 states have return successors, (157), 121 states have call predecessors, (157), 128 states have call successors, (157) [2023-12-22 02:30:25,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2406 states to 2406 states and 2950 transitions. [2023-12-22 02:30:25,160 INFO L78 Accepts]: Start accepts. Automaton has 2406 states and 2950 transitions. Word has length 91 [2023-12-22 02:30:25,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:25,160 INFO L495 AbstractCegarLoop]: Abstraction has 2406 states and 2950 transitions. [2023-12-22 02:30:25,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-22 02:30:25,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2406 states and 2950 transitions. [2023-12-22 02:30:25,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-22 02:30:25,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:25,161 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:25,165 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 (31)] Ended with exit code 0 [2023-12-22 02:30:25,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:25,363 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:25,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:25,363 INFO L85 PathProgramCache]: Analyzing trace with hash 365934625, now seen corresponding path program 1 times [2023-12-22 02:30:25,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:25,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065389984] [2023-12-22 02:30:25,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:25,363 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 [2023-12-22 02:30:25,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:25,364 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2023-12-22 02:30:25,372 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 (32)] Waiting until timeout for monitored process [2023-12-22 02:30:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:25,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:30:25,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:25,457 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-22 02:30:25,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:25,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:25,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065389984] [2023-12-22 02:30:25,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065389984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:25,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:25,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:30:25,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315882862] [2023-12-22 02:30:25,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:25,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:30:25,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:25,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:30:25,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:25,458 INFO L87 Difference]: Start difference. First operand 2406 states and 2950 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-22 02:30:25,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:25,625 INFO L93 Difference]: Finished difference Result 2689 states and 3301 transitions. [2023-12-22 02:30:25,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:30:25,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 93 [2023-12-22 02:30:25,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:25,638 INFO L225 Difference]: With dead ends: 2689 [2023-12-22 02:30:25,639 INFO L226 Difference]: Without dead ends: 1710 [2023-12-22 02:30:25,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:25,640 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 54 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:25,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 638 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:30:25,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2023-12-22 02:30:25,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1710. [2023-12-22 02:30:25,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1557 states have (on average 1.2183686576750161) internal successors, (1897), 1562 states have internal predecessors, (1897), 82 states have call successors, (82), 68 states have call predecessors, (82), 70 states have return successors, (84), 80 states have call predecessors, (84), 82 states have call successors, (84) [2023-12-22 02:30:25,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2063 transitions. [2023-12-22 02:30:25,713 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2063 transitions. Word has length 93 [2023-12-22 02:30:25,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:25,713 INFO L495 AbstractCegarLoop]: Abstraction has 1710 states and 2063 transitions. [2023-12-22 02:30:25,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-22 02:30:25,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2063 transitions. [2023-12-22 02:30:25,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-22 02:30:25,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:25,714 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:25,720 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 (32)] Forceful destruction successful, exit code 0 [2023-12-22 02:30:25,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:25,917 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:25,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:25,918 INFO L85 PathProgramCache]: Analyzing trace with hash 623128737, now seen corresponding path program 1 times [2023-12-22 02:30:25,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:25,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588583574] [2023-12-22 02:30:25,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:25,918 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 [2023-12-22 02:30:25,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:25,930 INFO L229 MonitoredProcess]: Starting monitored process 33 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) [2023-12-22 02:30:25,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-22 02:30:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:26,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:30:26,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:26,105 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-22 02:30:26,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:26,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:26,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588583574] [2023-12-22 02:30:26,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588583574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:26,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:26,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:30:26,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137402276] [2023-12-22 02:30:26,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:26,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:30:26,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:26,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:30:26,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:26,107 INFO L87 Difference]: Start difference. First operand 1710 states and 2063 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:30:26,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:26,276 INFO L93 Difference]: Finished difference Result 4885 states and 5930 transitions. [2023-12-22 02:30:26,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:30:26,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 147 [2023-12-22 02:30:26,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:26,283 INFO L225 Difference]: With dead ends: 4885 [2023-12-22 02:30:26,283 INFO L226 Difference]: Without dead ends: 3188 [2023-12-22 02:30:26,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:26,288 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 154 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:26,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 481 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:30:26,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3188 states. [2023-12-22 02:30:26,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3188 to 3182. [2023-12-22 02:30:26,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3182 states, 2897 states have (on average 1.2084915429754919) internal successors, (3501), 2906 states have internal predecessors, (3501), 152 states have call successors, (152), 128 states have call predecessors, (152), 132 states have return successors, (156), 148 states have call predecessors, (156), 152 states have call successors, (156) [2023-12-22 02:30:26,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3182 states to 3182 states and 3809 transitions. [2023-12-22 02:30:26,423 INFO L78 Accepts]: Start accepts. Automaton has 3182 states and 3809 transitions. Word has length 147 [2023-12-22 02:30:26,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:26,423 INFO L495 AbstractCegarLoop]: Abstraction has 3182 states and 3809 transitions. [2023-12-22 02:30:26,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:30:26,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3182 states and 3809 transitions. [2023-12-22 02:30:26,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-22 02:30:26,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:26,425 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:26,429 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 (33)] Forceful destruction successful, exit code 0 [2023-12-22 02:30:26,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:26,629 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:26,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:26,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1460296702, now seen corresponding path program 1 times [2023-12-22 02:30:26,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:26,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931815131] [2023-12-22 02:30:26,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:26,630 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 [2023-12-22 02:30:26,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:26,631 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2023-12-22 02:30:26,659 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 (34)] Waiting until timeout for monitored process [2023-12-22 02:30:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:26,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:30:26,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-22 02:30:26,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:26,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:26,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931815131] [2023-12-22 02:30:26,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931815131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:26,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:26,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:26,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629407086] [2023-12-22 02:30:26,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:26,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:30:26,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:26,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:30:26,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:26,841 INFO L87 Difference]: Start difference. First operand 3182 states and 3809 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:30:27,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:27,312 INFO L93 Difference]: Finished difference Result 9396 states and 11250 transitions. [2023-12-22 02:30:27,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:30:27,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 147 [2023-12-22 02:30:27,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:27,322 INFO L225 Difference]: With dead ends: 9396 [2023-12-22 02:30:27,322 INFO L226 Difference]: Without dead ends: 6228 [2023-12-22 02:30:27,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:27,325 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 306 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:27,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 639 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 02:30:27,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6228 states. [2023-12-22 02:30:27,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6228 to 6226. [2023-12-22 02:30:27,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6226 states, 5666 states have (on average 1.1990822449699965) internal successors, (6794), 5688 states have internal predecessors, (6794), 295 states have call successors, (295), 248 states have call predecessors, (295), 264 states have return successors, (335), 291 states have call predecessors, (335), 295 states have call successors, (335) [2023-12-22 02:30:27,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 7424 transitions. [2023-12-22 02:30:27,623 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 7424 transitions. Word has length 147 [2023-12-22 02:30:27,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:27,624 INFO L495 AbstractCegarLoop]: Abstraction has 6226 states and 7424 transitions. [2023-12-22 02:30:27,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:30:27,624 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 7424 transitions. [2023-12-22 02:30:27,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-22 02:30:27,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:27,627 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:27,633 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 (34)] Forceful destruction successful, exit code 0 [2023-12-22 02:30:27,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:27,831 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:27,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:27,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1049686336, now seen corresponding path program 1 times [2023-12-22 02:30:27,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:27,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289436416] [2023-12-22 02:30:27,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:27,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:27,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:27,833 INFO L229 MonitoredProcess]: Starting monitored process 35 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) [2023-12-22 02:30:27,852 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 (35)] Waiting until timeout for monitored process [2023-12-22 02:30:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:27,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:30:27,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:27,933 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-22 02:30:27,933 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:27,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:27,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289436416] [2023-12-22 02:30:27,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289436416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:27,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:27,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:30:27,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936808121] [2023-12-22 02:30:27,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:27,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:30:27,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:27,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:30:27,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:27,937 INFO L87 Difference]: Start difference. First operand 6226 states and 7424 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:30:28,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:28,166 INFO L93 Difference]: Finished difference Result 10970 states and 13067 transitions. [2023-12-22 02:30:28,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:30:28,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2023-12-22 02:30:28,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:28,174 INFO L225 Difference]: With dead ends: 10970 [2023-12-22 02:30:28,174 INFO L226 Difference]: Without dead ends: 4758 [2023-12-22 02:30:28,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:28,182 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 251 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:28,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 234 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:30:28,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4758 states. [2023-12-22 02:30:28,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4758 to 4758. [2023-12-22 02:30:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4758 states, 4333 states have (on average 1.1991691668589892) internal successors, (5196), 4350 states have internal predecessors, (5196), 222 states have call successors, (222), 188 states have call predecessors, (222), 202 states have return successors, (248), 220 states have call predecessors, (248), 222 states have call successors, (248) [2023-12-22 02:30:28,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4758 states to 4758 states and 5666 transitions. [2023-12-22 02:30:28,430 INFO L78 Accepts]: Start accepts. Automaton has 4758 states and 5666 transitions. Word has length 147 [2023-12-22 02:30:28,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:28,430 INFO L495 AbstractCegarLoop]: Abstraction has 4758 states and 5666 transitions. [2023-12-22 02:30:28,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:30:28,430 INFO L276 IsEmpty]: Start isEmpty. Operand 4758 states and 5666 transitions. [2023-12-22 02:30:28,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-22 02:30:28,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:28,432 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:28,438 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 (35)] Forceful destruction successful, exit code 0 [2023-12-22 02:30:28,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:28,636 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:28,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:28,637 INFO L85 PathProgramCache]: Analyzing trace with hash -991576099, now seen corresponding path program 1 times [2023-12-22 02:30:28,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:28,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106197380] [2023-12-22 02:30:28,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:28,637 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 [2023-12-22 02:30:28,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:28,639 INFO L229 MonitoredProcess]: Starting monitored process 36 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) [2023-12-22 02:30:28,676 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 (36)] Waiting until timeout for monitored process [2023-12-22 02:30:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:28,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:30:28,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-22 02:30:28,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:28,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:28,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106197380] [2023-12-22 02:30:28,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106197380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:28,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:28,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:28,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373634542] [2023-12-22 02:30:28,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:28,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:30:28,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:28,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:30:28,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:28,871 INFO L87 Difference]: Start difference. First operand 4758 states and 5666 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:30:29,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:29,481 INFO L93 Difference]: Finished difference Result 13739 states and 16353 transitions. [2023-12-22 02:30:29,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:30:29,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 149 [2023-12-22 02:30:29,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:29,495 INFO L225 Difference]: With dead ends: 13739 [2023-12-22 02:30:29,495 INFO L226 Difference]: Without dead ends: 8995 [2023-12-22 02:30:29,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:29,499 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 297 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:29,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 618 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 02:30:29,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8995 states. [2023-12-22 02:30:29,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8995 to 8993. [2023-12-22 02:30:29,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8993 states, 8185 states have (on average 1.1937690897984117) internal successors, (9771), 8223 states have internal predecessors, (9771), 419 states have call successors, (419), 352 states have call predecessors, (419), 388 states have return successors, (491), 419 states have call predecessors, (491), 419 states have call successors, (491) [2023-12-22 02:30:29,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8993 states to 8993 states and 10681 transitions. [2023-12-22 02:30:29,995 INFO L78 Accepts]: Start accepts. Automaton has 8993 states and 10681 transitions. Word has length 149 [2023-12-22 02:30:29,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:29,996 INFO L495 AbstractCegarLoop]: Abstraction has 8993 states and 10681 transitions. [2023-12-22 02:30:29,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:30:29,996 INFO L276 IsEmpty]: Start isEmpty. Operand 8993 states and 10681 transitions. [2023-12-22 02:30:29,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-22 02:30:29,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:30,000 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:30,006 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 (36)] Forceful destruction successful, exit code 0 [2023-12-22 02:30:30,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:30,204 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:30,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:30,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1147556641, now seen corresponding path program 1 times [2023-12-22 02:30:30,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:30,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428855874] [2023-12-22 02:30:30,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:30,205 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 [2023-12-22 02:30:30,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:30,206 INFO L229 MonitoredProcess]: Starting monitored process 37 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) [2023-12-22 02:30:30,207 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 (37)] Waiting until timeout for monitored process [2023-12-22 02:30:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:30,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:30:30,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:30,314 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-22 02:30:30,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:30,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:30,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428855874] [2023-12-22 02:30:30,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428855874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:30,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:30,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:30:30,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591624336] [2023-12-22 02:30:30,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:30,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:30:30,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:30,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:30:30,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:30,316 INFO L87 Difference]: Start difference. First operand 8993 states and 10681 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:30:30,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:30,737 INFO L93 Difference]: Finished difference Result 17965 states and 21326 transitions. [2023-12-22 02:30:30,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:30:30,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 149 [2023-12-22 02:30:30,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:30,756 INFO L225 Difference]: With dead ends: 17965 [2023-12-22 02:30:30,756 INFO L226 Difference]: Without dead ends: 8986 [2023-12-22 02:30:30,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:30,767 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 249 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:30,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 233 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:30:30,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8986 states. [2023-12-22 02:30:31,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8986 to 8986. [2023-12-22 02:30:31,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8986 states, 8181 states have (on average 1.19337489304486) internal successors, (9763), 8218 states have internal predecessors, (9763), 416 states have call successors, (416), 352 states have call predecessors, (416), 388 states have return successors, (488), 416 states have call predecessors, (488), 416 states have call successors, (488) [2023-12-22 02:30:31,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8986 states to 8986 states and 10667 transitions. [2023-12-22 02:30:31,204 INFO L78 Accepts]: Start accepts. Automaton has 8986 states and 10667 transitions. Word has length 149 [2023-12-22 02:30:31,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:31,204 INFO L495 AbstractCegarLoop]: Abstraction has 8986 states and 10667 transitions. [2023-12-22 02:30:31,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:30:31,204 INFO L276 IsEmpty]: Start isEmpty. Operand 8986 states and 10667 transitions. [2023-12-22 02:30:31,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-22 02:30:31,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:31,207 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:31,211 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 (37)] Ended with exit code 0 [2023-12-22 02:30:31,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:31,409 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:31,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:31,409 INFO L85 PathProgramCache]: Analyzing trace with hash 885018178, now seen corresponding path program 1 times [2023-12-22 02:30:31,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:31,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235539655] [2023-12-22 02:30:31,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:31,409 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 [2023-12-22 02:30:31,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:31,410 INFO L229 MonitoredProcess]: Starting monitored process 38 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) [2023-12-22 02:30:31,413 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 (38)] Waiting until timeout for monitored process [2023-12-22 02:30:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:31,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:30:31,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:31,621 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-22 02:30:31,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:31,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:31,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235539655] [2023-12-22 02:30:31,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235539655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:31,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:31,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:31,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121209666] [2023-12-22 02:30:31,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:31,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:30:31,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:31,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:30:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:31,622 INFO L87 Difference]: Start difference. First operand 8986 states and 10667 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:30:32,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:32,794 INFO L93 Difference]: Finished difference Result 25940 states and 30768 transitions. [2023-12-22 02:30:32,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:30:32,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 151 [2023-12-22 02:30:32,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:32,824 INFO L225 Difference]: With dead ends: 25940 [2023-12-22 02:30:32,824 INFO L226 Difference]: Without dead ends: 16968 [2023-12-22 02:30:32,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:32,838 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 294 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:32,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 580 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 02:30:32,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16968 states. [2023-12-22 02:30:33,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16968 to 16966. [2023-12-22 02:30:33,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16966 states, 15430 states have (on average 1.1883344134802334) internal successors, (18336), 15516 states have internal predecessors, (18336), 783 states have call successors, (783), 656 states have call predecessors, (783), 752 states have return successors, (963), 795 states have call predecessors, (963), 783 states have call successors, (963) [2023-12-22 02:30:33,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16966 states to 16966 states and 20082 transitions. [2023-12-22 02:30:33,713 INFO L78 Accepts]: Start accepts. Automaton has 16966 states and 20082 transitions. Word has length 151 [2023-12-22 02:30:33,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:33,714 INFO L495 AbstractCegarLoop]: Abstraction has 16966 states and 20082 transitions. [2023-12-22 02:30:33,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:30:33,714 INFO L276 IsEmpty]: Start isEmpty. Operand 16966 states and 20082 transitions. [2023-12-22 02:30:33,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-22 02:30:33,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:33,720 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:33,724 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 (38)] Ended with exit code 0 [2023-12-22 02:30:33,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:33,924 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:33,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:33,924 INFO L85 PathProgramCache]: Analyzing trace with hash 344588672, now seen corresponding path program 1 times [2023-12-22 02:30:33,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:33,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394913835] [2023-12-22 02:30:33,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:33,925 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 [2023-12-22 02:30:33,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:33,926 INFO L229 MonitoredProcess]: Starting monitored process 39 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) [2023-12-22 02:30:33,933 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 (39)] Waiting until timeout for monitored process [2023-12-22 02:30:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:34,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:30:34,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:34,020 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-22 02:30:34,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:34,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:34,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394913835] [2023-12-22 02:30:34,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394913835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:34,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:34,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:30:34,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962823801] [2023-12-22 02:30:34,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:34,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:30:34,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:34,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:30:34,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:34,022 INFO L87 Difference]: Start difference. First operand 16966 states and 20082 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:30:34,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:34,826 INFO L93 Difference]: Finished difference Result 33912 states and 40131 transitions. [2023-12-22 02:30:34,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:30:34,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 151 [2023-12-22 02:30:34,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:34,856 INFO L225 Difference]: With dead ends: 33912 [2023-12-22 02:30:34,856 INFO L226 Difference]: Without dead ends: 16960 [2023-12-22 02:30:34,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:34,878 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 247 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:34,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 232 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:30:34,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16960 states. [2023-12-22 02:30:35,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16960 to 16960. [2023-12-22 02:30:35,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16960 states, 15427 states have (on average 1.1881765735398975) internal successors, (18330), 15512 states have internal predecessors, (18330), 780 states have call successors, (780), 656 states have call predecessors, (780), 752 states have return successors, (960), 792 states have call predecessors, (960), 780 states have call successors, (960) [2023-12-22 02:30:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16960 states to 16960 states and 20070 transitions. [2023-12-22 02:30:36,016 INFO L78 Accepts]: Start accepts. Automaton has 16960 states and 20070 transitions. Word has length 151 [2023-12-22 02:30:36,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:36,017 INFO L495 AbstractCegarLoop]: Abstraction has 16960 states and 20070 transitions. [2023-12-22 02:30:36,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:30:36,017 INFO L276 IsEmpty]: Start isEmpty. Operand 16960 states and 20070 transitions. [2023-12-22 02:30:36,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-22 02:30:36,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:36,023 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:36,029 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 (39)] Forceful destruction successful, exit code 0 [2023-12-22 02:30:36,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:36,227 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:36,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:36,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1456142115, now seen corresponding path program 1 times [2023-12-22 02:30:36,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:36,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354626321] [2023-12-22 02:30:36,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:36,229 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 [2023-12-22 02:30:36,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:36,230 INFO L229 MonitoredProcess]: Starting monitored process 40 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) [2023-12-22 02:30:36,232 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 (40)] Waiting until timeout for monitored process [2023-12-22 02:30:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:36,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:30:36,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:36,474 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-22 02:30:36,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:36,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:36,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354626321] [2023-12-22 02:30:36,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354626321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:36,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:36,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:36,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743360704] [2023-12-22 02:30:36,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:36,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:30:36,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:36,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:30:36,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:36,475 INFO L87 Difference]: Start difference. First operand 16960 states and 20070 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:30:38,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:38,127 INFO L93 Difference]: Finished difference Result 48733 states and 57609 transitions. [2023-12-22 02:30:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:30:38,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 153 [2023-12-22 02:30:38,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:38,183 INFO L225 Difference]: With dead ends: 48733 [2023-12-22 02:30:38,183 INFO L226 Difference]: Without dead ends: 31787 [2023-12-22 02:30:38,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:38,204 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 288 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:38,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 548 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 02:30:38,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31787 states. [2023-12-22 02:30:40,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31787 to 31785. [2023-12-22 02:30:40,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31785 states, 28865 states have (on average 1.183059068075524) internal successors, (34149), 29059 states have internal predecessors, (34149), 1463 states have call successors, (1463), 1216 states have call predecessors, (1463), 1456 states have return successors, (1883), 1511 states have call predecessors, (1883), 1463 states have call successors, (1883) [2023-12-22 02:30:40,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31785 states to 31785 states and 37495 transitions. [2023-12-22 02:30:40,079 INFO L78 Accepts]: Start accepts. Automaton has 31785 states and 37495 transitions. Word has length 153 [2023-12-22 02:30:40,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:40,080 INFO L495 AbstractCegarLoop]: Abstraction has 31785 states and 37495 transitions. [2023-12-22 02:30:40,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:30:40,080 INFO L276 IsEmpty]: Start isEmpty. Operand 31785 states and 37495 transitions. [2023-12-22 02:30:40,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-22 02:30:40,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:40,091 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:40,097 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 (40)] Forceful destruction successful, exit code 0 [2023-12-22 02:30:40,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:40,295 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:40,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:40,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1029587617, now seen corresponding path program 1 times [2023-12-22 02:30:40,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:40,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731774418] [2023-12-22 02:30:40,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:40,296 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 [2023-12-22 02:30:40,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:40,297 INFO L229 MonitoredProcess]: Starting monitored process 41 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) [2023-12-22 02:30:40,297 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 (41)] Waiting until timeout for monitored process [2023-12-22 02:30:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:40,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:30:40,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-22 02:30:40,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:40,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:40,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731774418] [2023-12-22 02:30:40,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731774418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:40,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:40,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:30:40,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802590713] [2023-12-22 02:30:40,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:40,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:30:40,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:40,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:30:40,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:40,392 INFO L87 Difference]: Start difference. First operand 31785 states and 37495 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:30:41,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:41,964 INFO L93 Difference]: Finished difference Result 63551 states and 74960 transitions. [2023-12-22 02:30:41,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:30:41,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 153 [2023-12-22 02:30:41,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:42,014 INFO L225 Difference]: With dead ends: 63551 [2023-12-22 02:30:42,015 INFO L226 Difference]: Without dead ends: 31780 [2023-12-22 02:30:42,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:42,036 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 245 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:42,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 231 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:30:42,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31780 states. [2023-12-22 02:30:43,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31780 to 31780. [2023-12-22 02:30:43,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31780 states, 28863 states have (on average 1.1830024598967537) internal successors, (34145), 29056 states have internal predecessors, (34145), 1460 states have call successors, (1460), 1216 states have call predecessors, (1460), 1456 states have return successors, (1880), 1508 states have call predecessors, (1880), 1460 states have call successors, (1880) [2023-12-22 02:30:43,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31780 states to 31780 states and 37485 transitions. [2023-12-22 02:30:43,854 INFO L78 Accepts]: Start accepts. Automaton has 31780 states and 37485 transitions. Word has length 153 [2023-12-22 02:30:43,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:43,854 INFO L495 AbstractCegarLoop]: Abstraction has 31780 states and 37485 transitions. [2023-12-22 02:30:43,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:30:43,854 INFO L276 IsEmpty]: Start isEmpty. Operand 31780 states and 37485 transitions. [2023-12-22 02:30:43,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-22 02:30:43,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:43,865 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:43,869 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 (41)] Ended with exit code 0 [2023-12-22 02:30:44,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:44,065 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:44,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:44,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1962561666, now seen corresponding path program 1 times [2023-12-22 02:30:44,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:44,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883464634] [2023-12-22 02:30:44,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:44,066 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 [2023-12-22 02:30:44,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:44,067 INFO L229 MonitoredProcess]: Starting monitored process 42 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) [2023-12-22 02:30:44,068 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 (42)] Waiting until timeout for monitored process [2023-12-22 02:30:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:44,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:30:44,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-22 02:30:44,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:44,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:44,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883464634] [2023-12-22 02:30:44,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883464634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:44,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:44,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:30:44,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639001148] [2023-12-22 02:30:44,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:44,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:30:44,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:44,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:30:44,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:30:44,278 INFO L87 Difference]: Start difference. First operand 31780 states and 37485 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:30:47,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:47,810 INFO L93 Difference]: Finished difference Result 90884 states and 107134 transitions. [2023-12-22 02:30:47,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:30:47,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 155 [2023-12-22 02:30:47,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:47,922 INFO L225 Difference]: With dead ends: 90884 [2023-12-22 02:30:47,923 INFO L226 Difference]: Without dead ends: 59118 [2023-12-22 02:30:47,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:30:47,954 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 282 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:47,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 516 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 02:30:47,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59118 states. [2023-12-22 02:30:51,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59118 to 59116. [2023-12-22 02:30:51,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59116 states, 53572 states have (on average 1.1788620921376838) internal successors, (63154), 54006 states have internal predecessors, (63154), 2727 states have call successors, (2727), 2240 states have call predecessors, (2727), 2816 states have return successors, (3675), 2871 states have call predecessors, (3675), 2727 states have call successors, (3675) [2023-12-22 02:30:51,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59116 states to 59116 states and 69556 transitions. [2023-12-22 02:30:51,536 INFO L78 Accepts]: Start accepts. Automaton has 59116 states and 69556 transitions. Word has length 155 [2023-12-22 02:30:51,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:51,536 INFO L495 AbstractCegarLoop]: Abstraction has 59116 states and 69556 transitions. [2023-12-22 02:30:51,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-22 02:30:51,537 INFO L276 IsEmpty]: Start isEmpty. Operand 59116 states and 69556 transitions. [2023-12-22 02:30:51,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-22 02:30:51,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:51,555 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:51,560 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 (42)] Forceful destruction successful, exit code 0 [2023-12-22 02:30:51,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:51,756 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:51,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:51,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1994118080, now seen corresponding path program 1 times [2023-12-22 02:30:51,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:51,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029454999] [2023-12-22 02:30:51,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:51,757 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 [2023-12-22 02:30:51,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:51,758 INFO L229 MonitoredProcess]: Starting monitored process 43 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) [2023-12-22 02:30:51,758 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 (43)] Waiting until timeout for monitored process [2023-12-22 02:30:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:51,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:30:51,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-22 02:30:51,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:51,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:51,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029454999] [2023-12-22 02:30:51,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029454999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:51,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:51,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:30:51,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955962510] [2023-12-22 02:30:51,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:51,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:30:51,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:51,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:30:51,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:51,863 INFO L87 Difference]: Start difference. First operand 59116 states and 69556 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:30:55,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:30:55,274 INFO L93 Difference]: Finished difference Result 118214 states and 139085 transitions. [2023-12-22 02:30:55,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:30:55,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 155 [2023-12-22 02:30:55,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:30:55,399 INFO L225 Difference]: With dead ends: 118214 [2023-12-22 02:30:55,399 INFO L226 Difference]: Without dead ends: 59112 [2023-12-22 02:30:55,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:55,451 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 243 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:30:55,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 230 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:30:55,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59112 states. [2023-12-22 02:30:58,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59112 to 59112. [2023-12-22 02:30:59,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59112 states, 53571 states have (on average 1.1788467641074463) internal successors, (63152), 54004 states have internal predecessors, (63152), 2724 states have call successors, (2724), 2240 states have call predecessors, (2724), 2816 states have return successors, (3672), 2868 states have call predecessors, (3672), 2724 states have call successors, (3672) [2023-12-22 02:30:59,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59112 states to 59112 states and 69548 transitions. [2023-12-22 02:30:59,114 INFO L78 Accepts]: Start accepts. Automaton has 59112 states and 69548 transitions. Word has length 155 [2023-12-22 02:30:59,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:30:59,114 INFO L495 AbstractCegarLoop]: Abstraction has 59112 states and 69548 transitions. [2023-12-22 02:30:59,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-22 02:30:59,114 INFO L276 IsEmpty]: Start isEmpty. Operand 59112 states and 69548 transitions. [2023-12-22 02:30:59,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-22 02:30:59,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:30:59,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:30:59,134 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 (43)] Forceful destruction successful, exit code 0 [2023-12-22 02:30:59,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:30:59,331 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:30:59,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:30:59,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1220172253, now seen corresponding path program 1 times [2023-12-22 02:30:59,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:30:59,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033157467] [2023-12-22 02:30:59,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:30:59,332 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 [2023-12-22 02:30:59,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:30:59,396 INFO L229 MonitoredProcess]: Starting monitored process 44 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) [2023-12-22 02:30:59,424 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 (44)] Waiting until timeout for monitored process [2023-12-22 02:30:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:30:59,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:30:59,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:30:59,515 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-22 02:30:59,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:30:59,515 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:30:59,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033157467] [2023-12-22 02:30:59,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033157467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:30:59,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:30:59,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:30:59,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070387917] [2023-12-22 02:30:59,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:30:59,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:30:59,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:30:59,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:30:59,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:30:59,517 INFO L87 Difference]: Start difference. First operand 59112 states and 69548 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:31:05,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:31:05,255 INFO L93 Difference]: Finished difference Result 166307 states and 196297 transitions. [2023-12-22 02:31:05,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:31:05,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 157 [2023-12-22 02:31:05,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:31:05,503 INFO L225 Difference]: With dead ends: 166307 [2023-12-22 02:31:05,503 INFO L226 Difference]: Without dead ends: 83412 [2023-12-22 02:31:05,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:31:05,558 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 205 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:31:05,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 654 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:31:05,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83412 states. [2023-12-22 02:31:10,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83412 to 83412. [2023-12-22 02:31:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83412 states, 75551 states have (on average 1.1772842186072985) internal successors, (88945), 76120 states have internal predecessors, (88945), 3892 states have call successors, (3892), 3168 states have call predecessors, (3892), 3968 states have return successors, (5346), 4124 states have call predecessors, (5346), 3892 states have call successors, (5346) [2023-12-22 02:31:10,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83412 states to 83412 states and 98183 transitions. [2023-12-22 02:31:10,402 INFO L78 Accepts]: Start accepts. Automaton has 83412 states and 98183 transitions. Word has length 157 [2023-12-22 02:31:10,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:31:10,403 INFO L495 AbstractCegarLoop]: Abstraction has 83412 states and 98183 transitions. [2023-12-22 02:31:10,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-22 02:31:10,403 INFO L276 IsEmpty]: Start isEmpty. Operand 83412 states and 98183 transitions. [2023-12-22 02:31:10,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-22 02:31:10,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:31:10,432 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:31:10,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2023-12-22 02:31:10,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:31:10,636 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:31:10,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:31:10,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1268239834, now seen corresponding path program 1 times [2023-12-22 02:31:10,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:31:10,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744607890] [2023-12-22 02:31:10,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:31:10,637 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 [2023-12-22 02:31:10,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:31:10,638 INFO L229 MonitoredProcess]: Starting monitored process 45 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) [2023-12-22 02:31:10,638 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 (45)] Waiting until timeout for monitored process [2023-12-22 02:31:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:31:10,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:31:10,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:31:10,856 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-22 02:31:10,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:31:10,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:31:10,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744607890] [2023-12-22 02:31:10,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744607890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:31:10,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:31:10,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:31:10,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935342562] [2023-12-22 02:31:10,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:31:10,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:31:10,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:31:10,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:31:10,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:31:10,858 INFO L87 Difference]: Start difference. First operand 83412 states and 98183 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-22 02:31:17,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:31:17,030 INFO L93 Difference]: Finished difference Result 191039 states and 225459 transitions. [2023-12-22 02:31:17,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:31:17,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 198 [2023-12-22 02:31:17,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:31:17,245 INFO L225 Difference]: With dead ends: 191039 [2023-12-22 02:31:17,246 INFO L226 Difference]: Without dead ends: 107640 [2023-12-22 02:31:17,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:31:17,307 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 120 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:31:17,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 439 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:31:17,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107640 states. [2023-12-22 02:31:23,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107640 to 107496. [2023-12-22 02:31:23,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107496 states, 97331 states have (on average 1.1706136790950468) internal successors, (113937), 98028 states have internal predecessors, (113937), 5060 states have call successors, (5060), 4096 states have call predecessors, (5060), 5104 states have return successors, (6902), 5372 states have call predecessors, (6902), 5060 states have call successors, (6902) [2023-12-22 02:31:23,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107496 states to 107496 states and 125899 transitions. [2023-12-22 02:31:23,899 INFO L78 Accepts]: Start accepts. Automaton has 107496 states and 125899 transitions. Word has length 198 [2023-12-22 02:31:23,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:31:23,900 INFO L495 AbstractCegarLoop]: Abstraction has 107496 states and 125899 transitions. [2023-12-22 02:31:23,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-22 02:31:23,900 INFO L276 IsEmpty]: Start isEmpty. Operand 107496 states and 125899 transitions. [2023-12-22 02:31:23,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-12-22 02:31:23,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:31:23,957 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:31:23,961 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 (45)] Forceful destruction successful, exit code 0 [2023-12-22 02:31:24,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:31:24,158 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:31:24,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:31:24,158 INFO L85 PathProgramCache]: Analyzing trace with hash 931735745, now seen corresponding path program 1 times [2023-12-22 02:31:24,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:31:24,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056415091] [2023-12-22 02:31:24,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:31:24,158 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 [2023-12-22 02:31:24,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:31:24,159 INFO L229 MonitoredProcess]: Starting monitored process 46 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) [2023-12-22 02:31:24,164 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 (46)] Waiting until timeout for monitored process [2023-12-22 02:31:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:31:24,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 02:31:24,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:31:24,340 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-22 02:31:24,341 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:31:24,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:31:24,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056415091] [2023-12-22 02:31:24,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056415091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:31:24,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:31:24,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:31:24,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826778935] [2023-12-22 02:31:24,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:31:24,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:31:24,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:31:24,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:31:24,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:31:24,342 INFO L87 Difference]: Start difference. First operand 107496 states and 125899 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-22 02:31:30,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:31:30,941 INFO L93 Difference]: Finished difference Result 216204 states and 253700 transitions. [2023-12-22 02:31:30,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 02:31:30,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 225 [2023-12-22 02:31:30,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:31:31,150 INFO L225 Difference]: With dead ends: 216204 [2023-12-22 02:31:31,151 INFO L226 Difference]: Without dead ends: 108722 [2023-12-22 02:31:31,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 02:31:31,234 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 314 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:31:31,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 454 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-22 02:31:31,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108722 states.