/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/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 02:04:57,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 02:04:57,104 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 02:04:57,107 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 02:04:57,108 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 02:04:57,129 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 02:04:57,130 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 02:04:57,131 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 02:04:57,131 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 02:04:57,134 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 02:04:57,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 02:04:57,135 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 02:04:57,136 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 02:04:57,137 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 02:04:57,137 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 02:04:57,137 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 02:04:57,138 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 02:04:57,138 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 02:04:57,138 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 02:04:57,138 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 02:04:57,138 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 02:04:57,139 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 02:04:57,139 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 02:04:57,139 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 02:04:57,139 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 02:04:57,140 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 02:04:57,140 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 02:04:57,140 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 02:04:57,140 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 02:04:57,140 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 02:04:57,141 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 02:04:57,141 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 02:04:57,141 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 02:04:57,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 02:04:57,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 02:04:57,142 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 02:04:57,142 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 02:04:57,142 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 02:04:57,142 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 02:04:57,142 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 02:04:57,142 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 02:04:57,143 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 02:04:57,143 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 02:04:57,143 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 02:04:57,143 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 02:04:57,143 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 02:04:57,143 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 02:04:57,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 02:04:57,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 02:04:57,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 02:04:57,368 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 02:04:57,368 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 02:04:57,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c [2023-12-22 02:04:58,520 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 02:04:58,854 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 02:04:58,855 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c [2023-12-22 02:04:58,881 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe787f65f/4bbee3325e344287b7546ecc27229673/FLAG83e5113b3 [2023-12-22 02:04:59,094 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe787f65f/4bbee3325e344287b7546ecc27229673 [2023-12-22 02:04:59,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 02:04:59,096 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 02:04:59,097 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 02:04:59,097 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 02:04:59,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 02:04:59,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:04:59" (1/1) ... [2023-12-22 02:04:59,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46c684da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:04:59, skipping insertion in model container [2023-12-22 02:04:59,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:04:59" (1/1) ... [2023-12-22 02:04:59,201 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 02:04:59,591 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/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c[20454,20467] [2023-12-22 02:04:59,625 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/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c[22791,22804] [2023-12-22 02:05:00,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 02:05:00,169 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 02:05:00,208 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/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c[20454,20467] [2023-12-22 02:05:00,212 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/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c[22791,22804] [2023-12-22 02:05:00,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 02:05:00,582 INFO L206 MainTranslator]: Completed translation [2023-12-22 02:05:00,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:00 WrapperNode [2023-12-22 02:05:00,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 02:05:00,584 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 02:05:00,584 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 02:05:00,584 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 02:05:00,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:00" (1/1) ... [2023-12-22 02:05:00,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:00" (1/1) ... [2023-12-22 02:05:00,730 INFO L138 Inliner]: procedures = 40, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5182 [2023-12-22 02:05:00,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 02:05:00,732 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 02:05:00,732 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 02:05:00,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 02:05:00,740 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:00" (1/1) ... [2023-12-22 02:05:00,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:00" (1/1) ... [2023-12-22 02:05:00,779 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:00" (1/1) ... [2023-12-22 02:05:00,844 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 02:05:00,844 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:00" (1/1) ... [2023-12-22 02:05:00,845 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:00" (1/1) ... [2023-12-22 02:05:00,902 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:00" (1/1) ... [2023-12-22 02:05:00,923 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:00" (1/1) ... [2023-12-22 02:05:00,942 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:00" (1/1) ... [2023-12-22 02:05:00,956 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:00" (1/1) ... [2023-12-22 02:05:00,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 02:05:00,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 02:05:00,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 02:05:00,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 02:05:00,993 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:00" (1/1) ... [2023-12-22 02:05:00,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 02:05:01,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 02:05:01,014 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 02:05:01,021 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 02:05:01,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 02:05:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 02:05:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 02:05:01,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 02:05:01,159 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 02:05:01,160 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 02:05:26,998 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 02:05:27,110 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 02:05:27,111 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-22 02:05:27,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:05:27 BoogieIcfgContainer [2023-12-22 02:05:27,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 02:05:27,114 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 02:05:27,114 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 02:05:27,116 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 02:05:27,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:04:59" (1/3) ... [2023-12-22 02:05:27,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52743628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:05:27, skipping insertion in model container [2023-12-22 02:05:27,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:00" (2/3) ... [2023-12-22 02:05:27,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52743628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:05:27, skipping insertion in model container [2023-12-22 02:05:27,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:05:27" (3/3) ... [2023-12-22 02:05:27,119 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c [2023-12-22 02:05:27,138 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 02:05:27,138 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-22 02:05:27,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 02:05:27,194 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;@299c41c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 02:05:27,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-22 02:05:27,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 867 states, 864 states have (on average 1.9710648148148149) internal successors, (1703), 866 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:27,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-22 02:05:27,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:05:27,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:05:27,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:05:27,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:05:27,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1640482482, now seen corresponding path program 1 times [2023-12-22 02:05:27,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:05:27,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819857420] [2023-12-22 02:05:27,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:05:27,233 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 02:05:27,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:05:27,235 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 02:05:27,246 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 02:05:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:05:27,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 02:05:27,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:05:27,336 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 02:05:27,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:05:27,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:05:27,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819857420] [2023-12-22 02:05:27,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819857420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:05:27,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:05:27,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:05:27,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669350072] [2023-12-22 02:05:27,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:05:27,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 02:05:27,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:05:27,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 02:05:27,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 02:05:27,377 INFO L87 Difference]: Start difference. First operand has 867 states, 864 states have (on average 1.9710648148148149) internal successors, (1703), 866 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:27,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:05:27,455 INFO L93 Difference]: Finished difference Result 1679 states and 3299 transitions. [2023-12-22 02:05:27,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 02:05:27,465 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-22 02:05:27,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:05:27,493 INFO L225 Difference]: With dead ends: 1679 [2023-12-22 02:05:27,493 INFO L226 Difference]: Without dead ends: 863 [2023-12-22 02:05:27,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 02:05:27,500 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:05:27,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1631 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:05:27,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-12-22 02:05:27,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2023-12-22 02:05:27,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 861 states have (on average 1.8954703832752613) internal successors, (1632), 862 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:27,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1632 transitions. [2023-12-22 02:05:27,572 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1632 transitions. Word has length 19 [2023-12-22 02:05:27,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:05:27,572 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1632 transitions. [2023-12-22 02:05:27,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:05:27,572 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1632 transitions. [2023-12-22 02:05:27,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-22 02:05:27,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:05:27,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:05:27,579 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 02:05:27,774 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 02:05:27,774 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:05:27,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:05:27,776 INFO L85 PathProgramCache]: Analyzing trace with hash 744272385, now seen corresponding path program 1 times [2023-12-22 02:05:27,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:05:27,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963807263] [2023-12-22 02:05:27,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:05:27,777 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 02:05:27,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:05:27,778 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 02:05:27,791 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 02:05:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:05:27,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:05:27,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:05:27,904 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 02:05:27,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:05:27,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:05:27,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963807263] [2023-12-22 02:05:27,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963807263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:05:27,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:05:27,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:05:27,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681328266] [2023-12-22 02:05:27,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:05:27,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:05:27,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:05:27,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:05:27,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:05:27,907 INFO L87 Difference]: Start difference. First operand 863 states and 1632 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:06,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:06:06,745 INFO L93 Difference]: Finished difference Result 2367 states and 4505 transitions. [2023-12-22 02:06:06,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:06:06,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-22 02:06:06,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:06:06,754 INFO L225 Difference]: With dead ends: 2367 [2023-12-22 02:06:06,754 INFO L226 Difference]: Without dead ends: 1614 [2023-12-22 02:06:06,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 02:06:06,758 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 970 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.6s IncrementalHoareTripleChecker+Time [2023-12-22 02:06:06,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 737 Invalid, 2864 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [664 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 38.6s Time] [2023-12-22 02:06:06,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2023-12-22 02:06:06,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1614. [2023-12-22 02:06:06,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1612 states have (on average 1.5750620347394542) internal successors, (2539), 1613 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:06,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2539 transitions. [2023-12-22 02:06:06,805 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2539 transitions. Word has length 19 [2023-12-22 02:06:06,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:06:06,806 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 2539 transitions. [2023-12-22 02:06:06,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2539 transitions. [2023-12-22 02:06:06,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-22 02:06:06,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:06:06,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 02:06:06,824 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 02:06:07,011 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 02:06:07,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:06:07,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:06:07,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1401330254, now seen corresponding path program 1 times [2023-12-22 02:06:07,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:06:07,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459295869] [2023-12-22 02:06:07,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:06:07,013 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 02:06:07,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:06:07,014 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 02:06:07,016 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 02:06:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:06:07,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:06:07,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:06:07,154 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 02:06:07,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:06:07,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:06:07,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459295869] [2023-12-22 02:06:07,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459295869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:06:07,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:06:07,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:06:07,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274636262] [2023-12-22 02:06:07,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:06:07,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:06:07,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:06:07,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:06:07,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:06:07,157 INFO L87 Difference]: Start difference. First operand 1614 states and 2539 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:07,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:06:07,262 INFO L93 Difference]: Finished difference Result 1672 states and 2631 transitions. [2023-12-22 02:06:07,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:06:07,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-22 02:06:07,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:06:07,270 INFO L225 Difference]: With dead ends: 1672 [2023-12-22 02:06:07,270 INFO L226 Difference]: Without dead ends: 1614 [2023-12-22 02:06:07,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 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 02:06:07,273 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 0 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4833 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:06:07,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4833 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:06:07,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2023-12-22 02:06:07,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1614. [2023-12-22 02:06:07,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1612 states have (on average 1.544044665012407) internal successors, (2489), 1613 states have internal predecessors, (2489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2489 transitions. [2023-12-22 02:06:07,305 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2489 transitions. Word has length 25 [2023-12-22 02:06:07,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:06:07,306 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 2489 transitions. [2023-12-22 02:06:07,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:07,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2489 transitions. [2023-12-22 02:06:07,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-22 02:06:07,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:06:07,314 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] [2023-12-22 02:06:07,332 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 02:06:07,519 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 02:06:07,519 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:06:07,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:06:07,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1958225767, now seen corresponding path program 1 times [2023-12-22 02:06:07,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:06:07,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853109126] [2023-12-22 02:06:07,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:06:07,521 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 02:06:07,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:06:07,522 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 02:06:07,525 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 02:06:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:06:07,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 02:06:07,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:06:09,097 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 02:06:09,097 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:06:09,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:06:09,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853109126] [2023-12-22 02:06:09,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853109126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:06:09,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:06:09,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-22 02:06:09,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221072781] [2023-12-22 02:06:09,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:06:09,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 02:06:09,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:06:09,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 02:06:09,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-22 02:06:09,103 INFO L87 Difference]: Start difference. First operand 1614 states and 2489 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:09,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:06:09,470 INFO L93 Difference]: Finished difference Result 2054 states and 3201 transitions. [2023-12-22 02:06:09,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 02:06:09,471 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-22 02:06:09,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:06:09,477 INFO L225 Difference]: With dead ends: 2054 [2023-12-22 02:06:09,477 INFO L226 Difference]: Without dead ends: 1999 [2023-12-22 02:06:09,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-22 02:06:09,479 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 6540 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6540 SdHoareTripleChecker+Valid, 2309 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:06:09,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6540 Valid, 2309 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-22 02:06:09,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2023-12-22 02:06:09,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1720. [2023-12-22 02:06:09,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.549476135040745) internal successors, (2662), 1719 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:09,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2662 transitions. [2023-12-22 02:06:09,502 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2662 transitions. Word has length 74 [2023-12-22 02:06:09,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:06:09,502 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2662 transitions. [2023-12-22 02:06:09,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:09,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2662 transitions. [2023-12-22 02:06:09,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-22 02:06:09,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:06:09,504 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] [2023-12-22 02:06:09,507 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 02:06:09,706 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 02:06:09,707 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:06:09,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:06:09,708 INFO L85 PathProgramCache]: Analyzing trace with hash -783811831, now seen corresponding path program 1 times [2023-12-22 02:06:09,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:06:09,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373442492] [2023-12-22 02:06:09,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:06:09,708 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 02:06:09,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:06:09,725 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 02:06:09,746 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 02:06:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:06:09,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:06:09,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:06:09,938 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 02:06:09,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:06:09,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:06:09,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373442492] [2023-12-22 02:06:09,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373442492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:06:09,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:06:09,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:06:09,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295952746] [2023-12-22 02:06:09,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:06:09,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:06:09,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:06:09,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:06:09,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:06:09,940 INFO L87 Difference]: Start difference. First operand 1720 states and 2662 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:09,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:06:09,974 INFO L93 Difference]: Finished difference Result 2026 states and 3158 transitions. [2023-12-22 02:06:09,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:06:09,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-22 02:06:09,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:06:09,982 INFO L225 Difference]: With dead ends: 2026 [2023-12-22 02:06:09,983 INFO L226 Difference]: Without dead ends: 1865 [2023-12-22 02:06:09,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 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 02:06:09,984 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1498 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:06:09,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1656 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:06:09,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2023-12-22 02:06:10,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1860. [2023-12-22 02:06:10,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1858 states have (on average 1.5522066738428417) internal successors, (2884), 1859 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 2884 transitions. [2023-12-22 02:06:10,012 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 2884 transitions. Word has length 76 [2023-12-22 02:06:10,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:06:10,015 INFO L495 AbstractCegarLoop]: Abstraction has 1860 states and 2884 transitions. [2023-12-22 02:06:10,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:10,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 2884 transitions. [2023-12-22 02:06:10,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-22 02:06:10,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:06:10,022 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] [2023-12-22 02:06:10,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-22 02:06:10,225 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 02:06:10,225 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:06:10,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:06:10,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1409718351, now seen corresponding path program 1 times [2023-12-22 02:06:10,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:06:10,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464999269] [2023-12-22 02:06:10,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:06:10,227 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 02:06:10,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:06:10,228 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 02:06:10,229 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 02:06:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:06:10,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:06:10,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:06:10,408 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 02:06:10,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:06:10,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:06:10,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464999269] [2023-12-22 02:06:10,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464999269] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:06:10,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:06:10,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 02:06:10,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025312108] [2023-12-22 02:06:10,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:06:10,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 02:06:10,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:06:10,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 02:06:10,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 02:06:10,410 INFO L87 Difference]: Start difference. First operand 1860 states and 2884 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:10,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:06:10,479 INFO L93 Difference]: Finished difference Result 1874 states and 2901 transitions. [2023-12-22 02:06:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 02:06:10,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-22 02:06:10,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:06:10,487 INFO L225 Difference]: With dead ends: 1874 [2023-12-22 02:06:10,487 INFO L226 Difference]: Without dead ends: 1872 [2023-12-22 02:06:10,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 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 02:06:10,488 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 1 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4726 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:06:10,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4726 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:06:10,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2023-12-22 02:06:10,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1868. [2023-12-22 02:06:10,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1866 states have (on average 1.5493033226152197) internal successors, (2891), 1867 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:10,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 2891 transitions. [2023-12-22 02:06:10,524 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 2891 transitions. Word has length 77 [2023-12-22 02:06:10,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:06:10,525 INFO L495 AbstractCegarLoop]: Abstraction has 1868 states and 2891 transitions. [2023-12-22 02:06:10,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:10,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 2891 transitions. [2023-12-22 02:06:10,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 02:06:10,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:06:10,526 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] [2023-12-22 02:06:10,535 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 02:06:10,730 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 02:06:10,730 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:06:10,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:06:10,730 INFO L85 PathProgramCache]: Analyzing trace with hash 89163937, now seen corresponding path program 1 times [2023-12-22 02:06:10,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:06:10,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540645444] [2023-12-22 02:06:10,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:06:10,731 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 02:06:10,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:06:10,732 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 02:06:10,762 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 02:06:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:06:10,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:06:10,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:06:10,892 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 02:06:10,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:06:10,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:06:10,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540645444] [2023-12-22 02:06:10,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540645444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:06:10,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:06:10,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:06:10,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837229041] [2023-12-22 02:06:10,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:06:10,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:06:10,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:06:10,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:06:10,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:06:10,894 INFO L87 Difference]: Start difference. First operand 1868 states and 2891 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:10,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:06:10,944 INFO L93 Difference]: Finished difference Result 2462 states and 3831 transitions. [2023-12-22 02:06:10,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:06:10,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 02:06:10,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:06:10,951 INFO L225 Difference]: With dead ends: 2462 [2023-12-22 02:06:10,952 INFO L226 Difference]: Without dead ends: 2153 [2023-12-22 02:06:10,953 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 02:06:10,954 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 1515 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:06:10,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1737 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:06:10,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2023-12-22 02:06:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2151. [2023-12-22 02:06:10,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 2149 states have (on average 1.5509539320614238) internal successors, (3333), 2150 states have internal predecessors, (3333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 3333 transitions. [2023-12-22 02:06:10,990 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 3333 transitions. Word has length 78 [2023-12-22 02:06:10,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:06:10,991 INFO L495 AbstractCegarLoop]: Abstraction has 2151 states and 3333 transitions. [2023-12-22 02:06:10,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:10,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 3333 transitions. [2023-12-22 02:06:10,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 02:06:10,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:06:10,992 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] [2023-12-22 02:06:10,998 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 02:06:11,196 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 02:06:11,197 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:06:11,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:06:11,197 INFO L85 PathProgramCache]: Analyzing trace with hash -321222751, now seen corresponding path program 1 times [2023-12-22 02:06:11,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:06:11,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133886998] [2023-12-22 02:06:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:06:11,198 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 02:06:11,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:06:11,199 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 02:06:11,230 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 02:06:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:06:11,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:06:11,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:06:11,356 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 02:06:11,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:06:11,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:06:11,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133886998] [2023-12-22 02:06:11,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133886998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:06:11,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:06:11,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:06:11,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457037543] [2023-12-22 02:06:11,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:06:11,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:06:11,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:06:11,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:06:11,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:06:11,360 INFO L87 Difference]: Start difference. First operand 2151 states and 3333 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:11,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:06:11,436 INFO L93 Difference]: Finished difference Result 3287 states and 5115 transitions. [2023-12-22 02:06:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:06:11,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 02:06:11,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:06:11,444 INFO L225 Difference]: With dead ends: 3287 [2023-12-22 02:06:11,444 INFO L226 Difference]: Without dead ends: 2695 [2023-12-22 02:06:11,446 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 02:06:11,447 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1513 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:06:11,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1739 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:06:11,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2023-12-22 02:06:11,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2693. [2023-12-22 02:06:11,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2693 states, 2691 states have (on average 1.5492382014121144) internal successors, (4169), 2692 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:11,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2693 states to 2693 states and 4169 transitions. [2023-12-22 02:06:11,493 INFO L78 Accepts]: Start accepts. Automaton has 2693 states and 4169 transitions. Word has length 78 [2023-12-22 02:06:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:06:11,493 INFO L495 AbstractCegarLoop]: Abstraction has 2693 states and 4169 transitions. [2023-12-22 02:06:11,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:11,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2693 states and 4169 transitions. [2023-12-22 02:06:11,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 02:06:11,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:06:11,494 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] [2023-12-22 02:06:11,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-22 02:06:11,698 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 02:06:11,698 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:06:11,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:06:11,698 INFO L85 PathProgramCache]: Analyzing trace with hash -549861983, now seen corresponding path program 1 times [2023-12-22 02:06:11,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:06:11,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121138431] [2023-12-22 02:06:11,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:06:11,699 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 02:06:11,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:06:11,722 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 02:06:11,754 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 (10)] Waiting until timeout for monitored process [2023-12-22 02:06:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:06:11,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:06:11,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:06:11,886 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 02:06:11,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:06:11,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:06:11,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121138431] [2023-12-22 02:06:11,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121138431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:06:11,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:06:11,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:06:11,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823357940] [2023-12-22 02:06:11,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:06:11,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:06:11,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:06:11,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:06:11,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:06:11,887 INFO L87 Difference]: Start difference. First operand 2693 states and 4169 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:11,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:06:11,937 INFO L93 Difference]: Finished difference Result 4865 states and 7539 transitions. [2023-12-22 02:06:11,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:06:11,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 02:06:11,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:06:11,949 INFO L225 Difference]: With dead ends: 4865 [2023-12-22 02:06:11,949 INFO L226 Difference]: Without dead ends: 3731 [2023-12-22 02:06:11,952 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 02:06:11,953 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1509 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:06:11,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1735 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:06:11,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2023-12-22 02:06:12,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 3729. [2023-12-22 02:06:12,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3729 states, 3727 states have (on average 1.5414542527502013) internal successors, (5745), 3728 states have internal predecessors, (5745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:12,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3729 states to 3729 states and 5745 transitions. [2023-12-22 02:06:12,016 INFO L78 Accepts]: Start accepts. Automaton has 3729 states and 5745 transitions. Word has length 78 [2023-12-22 02:06:12,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:06:12,016 INFO L495 AbstractCegarLoop]: Abstraction has 3729 states and 5745 transitions. [2023-12-22 02:06:12,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:12,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3729 states and 5745 transitions. [2023-12-22 02:06:12,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 02:06:12,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:06:12,017 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] [2023-12-22 02:06:12,023 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 02:06:12,221 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 02:06:12,221 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:06:12,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:06:12,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1175518047, now seen corresponding path program 1 times [2023-12-22 02:06:12,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:06:12,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838843136] [2023-12-22 02:06:12,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:06:12,222 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 02:06:12,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:06:12,229 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 02:06:12,262 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 02:06:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:06:12,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:06:12,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:06:12,397 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 02:06:12,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:06:12,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:06:12,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838843136] [2023-12-22 02:06:12,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838843136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:06:12,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:06:12,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:06:12,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969058252] [2023-12-22 02:06:12,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:06:12,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:06:12,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:06:12,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:06:12,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:06:12,399 INFO L87 Difference]: Start difference. First operand 3729 states and 5745 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:12,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:06:12,458 INFO L93 Difference]: Finished difference Result 7877 states and 12099 transitions. [2023-12-22 02:06:12,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:06:12,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 02:06:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:06:12,479 INFO L225 Difference]: With dead ends: 7877 [2023-12-22 02:06:12,480 INFO L226 Difference]: Without dead ends: 5707 [2023-12-22 02:06:12,484 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 02:06:12,485 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 1507 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:06:12,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1737 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:06:12,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states. [2023-12-22 02:06:12,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 5705. [2023-12-22 02:06:12,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5705 states, 5703 states have (on average 1.5263896194985096) internal successors, (8705), 5704 states have internal predecessors, (8705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:12,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5705 states to 5705 states and 8705 transitions. [2023-12-22 02:06:12,597 INFO L78 Accepts]: Start accepts. Automaton has 5705 states and 8705 transitions. Word has length 78 [2023-12-22 02:06:12,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:06:12,597 INFO L495 AbstractCegarLoop]: Abstraction has 5705 states and 8705 transitions. [2023-12-22 02:06:12,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:12,598 INFO L276 IsEmpty]: Start isEmpty. Operand 5705 states and 8705 transitions. [2023-12-22 02:06:12,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 02:06:12,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:06:12,599 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] [2023-12-22 02:06:12,604 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 02:06:12,802 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 02:06:12,802 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:06:12,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:06:12,803 INFO L85 PathProgramCache]: Analyzing trace with hash -286784607, now seen corresponding path program 1 times [2023-12-22 02:06:12,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:06:12,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181642570] [2023-12-22 02:06:12,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:06:12,803 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 02:06:12,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:06:12,813 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 02:06:12,814 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 02:06:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:06:12,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:06:12,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:06:12,934 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 02:06:12,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:06:12,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:06:12,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181642570] [2023-12-22 02:06:12,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181642570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:06:12,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:06:12,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:06:12,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675596275] [2023-12-22 02:06:12,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:06:12,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:06:12,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:06:12,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:06:12,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:06:12,935 INFO L87 Difference]: Start difference. First operand 5705 states and 8705 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:13,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:06:13,071 INFO L93 Difference]: Finished difference Result 13613 states and 20643 transitions. [2023-12-22 02:06:13,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:06:13,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 02:06:13,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:06:13,091 INFO L225 Difference]: With dead ends: 13613 [2023-12-22 02:06:13,092 INFO L226 Difference]: Without dead ends: 9467 [2023-12-22 02:06:13,099 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 02:06:13,100 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 1505 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:06:13,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1739 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:06:13,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9467 states. [2023-12-22 02:06:13,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9467 to 9465. [2023-12-22 02:06:13,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9465 states, 9463 states have (on average 1.5049138750924653) internal successors, (14241), 9464 states have internal predecessors, (14241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:13,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9465 states to 9465 states and 14241 transitions. [2023-12-22 02:06:13,264 INFO L78 Accepts]: Start accepts. Automaton has 9465 states and 14241 transitions. Word has length 78 [2023-12-22 02:06:13,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:06:13,264 INFO L495 AbstractCegarLoop]: Abstraction has 9465 states and 14241 transitions. [2023-12-22 02:06:13,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:13,264 INFO L276 IsEmpty]: Start isEmpty. Operand 9465 states and 14241 transitions. [2023-12-22 02:06:13,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 02:06:13,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:06:13,265 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] [2023-12-22 02:06:13,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-22 02:06:13,468 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 02:06:13,468 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:06:13,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:06:13,469 INFO L85 PathProgramCache]: Analyzing trace with hash -589805919, now seen corresponding path program 1 times [2023-12-22 02:06:13,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:06:13,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24197594] [2023-12-22 02:06:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:06:13,469 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 02:06:13,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:06:13,490 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 02:06:13,559 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 02:06:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:06:13,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:06:13,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:06:13,679 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 02:06:13,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:06:13,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:06:13,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24197594] [2023-12-22 02:06:13,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24197594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:06:13,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:06:13,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:06:13,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696414504] [2023-12-22 02:06:13,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:06:13,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:06:13,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:06:13,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:06:13,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:06:13,681 INFO L87 Difference]: Start difference. First operand 9465 states and 14241 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:13,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:06:13,893 INFO L93 Difference]: Finished difference Result 24509 states and 36579 transitions. [2023-12-22 02:06:13,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:06:13,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-22 02:06:13,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:06:13,918 INFO L225 Difference]: With dead ends: 24509 [2023-12-22 02:06:13,919 INFO L226 Difference]: Without dead ends: 16603 [2023-12-22 02:06:13,930 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 02:06:13,931 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 1511 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:06:13,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1741 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:06:13,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16603 states. [2023-12-22 02:06:14,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16603 to 16601. [2023-12-22 02:06:14,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16601 states, 16599 states have (on average 1.478703536357612) internal successors, (24545), 16600 states have internal predecessors, (24545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:14,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16601 states to 16601 states and 24545 transitions. [2023-12-22 02:06:14,280 INFO L78 Accepts]: Start accepts. Automaton has 16601 states and 24545 transitions. Word has length 78 [2023-12-22 02:06:14,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:06:14,280 INFO L495 AbstractCegarLoop]: Abstraction has 16601 states and 24545 transitions. [2023-12-22 02:06:14,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:14,280 INFO L276 IsEmpty]: Start isEmpty. Operand 16601 states and 24545 transitions. [2023-12-22 02:06:14,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-22 02:06:14,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:06:14,281 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] [2023-12-22 02:06:14,301 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 02:06:14,484 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 02:06:14,484 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:06:14,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:06:14,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1500697018, now seen corresponding path program 1 times [2023-12-22 02:06:14,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:06:14,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628199045] [2023-12-22 02:06:14,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:06:14,485 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 02:06:14,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:06:14,486 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 02:06:14,502 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 02:06:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:06:14,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:06:14,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:06:14,647 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 02:06:14,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:06:14,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:06:14,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628199045] [2023-12-22 02:06:14,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628199045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:06:14,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:06:14,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:06:14,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881212613] [2023-12-22 02:06:14,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:06:14,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:06:14,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:06:14,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:06:14,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:06:14,649 INFO L87 Difference]: Start difference. First operand 16601 states and 24545 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:14,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:06:14,907 INFO L93 Difference]: Finished difference Result 31968 states and 47591 transitions. [2023-12-22 02:06:14,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:06:14,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-22 02:06:14,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:06:14,941 INFO L225 Difference]: With dead ends: 31968 [2023-12-22 02:06:14,941 INFO L226 Difference]: Without dead ends: 23709 [2023-12-22 02:06:14,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 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 02:06:14,950 INFO L413 NwaCegarLoop]: 1649 mSDtfsCounter, 1514 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:06:14,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:06:14,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23709 states. [2023-12-22 02:06:15,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23709 to 23707. [2023-12-22 02:06:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23707 states, 23705 states have (on average 1.4728960134992617) internal successors, (34915), 23706 states have internal predecessors, (34915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23707 states to 23707 states and 34915 transitions. [2023-12-22 02:06:15,375 INFO L78 Accepts]: Start accepts. Automaton has 23707 states and 34915 transitions. Word has length 80 [2023-12-22 02:06:15,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:06:15,375 INFO L495 AbstractCegarLoop]: Abstraction has 23707 states and 34915 transitions. [2023-12-22 02:06:15,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:15,376 INFO L276 IsEmpty]: Start isEmpty. Operand 23707 states and 34915 transitions. [2023-12-22 02:06:15,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-22 02:06:15,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:06:15,376 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 02:06:15,380 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 02:06:15,579 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 02:06:15,579 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:06:15,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:06:15,580 INFO L85 PathProgramCache]: Analyzing trace with hash -382667676, now seen corresponding path program 1 times [2023-12-22 02:06:15,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:06:15,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693091851] [2023-12-22 02:06:15,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:06:15,580 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 02:06:15,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:06:15,582 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 02:06:15,583 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 02:06:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:06:15,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:06:15,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:06:15,781 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-22 02:06:15,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:06:15,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:06:15,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693091851] [2023-12-22 02:06:15,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693091851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:06:15,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:06:15,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:06:15,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456909488] [2023-12-22 02:06:15,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:06:15,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:06:15,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:06:15,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:06:15,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:06:15,782 INFO L87 Difference]: Start difference. First operand 23707 states and 34915 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:51,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:06:51,496 INFO L93 Difference]: Finished difference Result 26713 states and 39602 transitions. [2023-12-22 02:06:51,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:06:51,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-22 02:06:51,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:06:51,529 INFO L225 Difference]: With dead ends: 26713 [2023-12-22 02:06:51,529 INFO L226 Difference]: Without dead ends: 25209 [2023-12-22 02:06:51,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 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 02:06:51,534 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 869 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:06:51,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 615 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 35.3s Time] [2023-12-22 02:06:51,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25209 states. [2023-12-22 02:06:51,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25209 to 25209. [2023-12-22 02:06:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25209 states, 25207 states have (on average 1.4556670766057047) internal successors, (36693), 25208 states have internal predecessors, (36693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:52,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25209 states to 25209 states and 36693 transitions. [2023-12-22 02:06:52,145 INFO L78 Accepts]: Start accepts. Automaton has 25209 states and 36693 transitions. Word has length 90 [2023-12-22 02:06:52,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:06:52,145 INFO L495 AbstractCegarLoop]: Abstraction has 25209 states and 36693 transitions. [2023-12-22 02:06:52,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:06:52,146 INFO L276 IsEmpty]: Start isEmpty. Operand 25209 states and 36693 transitions. [2023-12-22 02:06:52,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-22 02:06:52,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:06:52,147 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 02:06:52,153 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 02:06:52,348 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 02:06:52,348 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:06:52,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:06:52,349 INFO L85 PathProgramCache]: Analyzing trace with hash -795408845, now seen corresponding path program 1 times [2023-12-22 02:06:52,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:06:52,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355838486] [2023-12-22 02:06:52,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:06:52,349 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 02:06:52,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:06:52,351 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 02:06:52,355 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 02:06:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:06:52,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:06:52,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:06:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:06:52,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:06:52,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:06:52,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355838486] [2023-12-22 02:06:52,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355838486] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:06:52,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:06:52,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:06:52,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189114925] [2023-12-22 02:06:52,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:06:52,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:06:52,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:06:52,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:06:52,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:06:52,642 INFO L87 Difference]: Start difference. First operand 25209 states and 36693 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:07:38,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:07:38,674 INFO L93 Difference]: Finished difference Result 31219 states and 44936 transitions. [2023-12-22 02:07:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:07:38,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-22 02:07:38,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:07:38,707 INFO L225 Difference]: With dead ends: 31219 [2023-12-22 02:07:38,707 INFO L226 Difference]: Without dead ends: 28213 [2023-12-22 02:07:38,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 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 02:07:38,714 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 820 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2778 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 3181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 2778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.6s IncrementalHoareTripleChecker+Time [2023-12-22 02:07:38,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 807 Invalid, 3181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 2778 Invalid, 0 Unknown, 0 Unchecked, 45.6s Time] [2023-12-22 02:07:38,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28213 states. [2023-12-22 02:07:39,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28213 to 28213. [2023-12-22 02:07:39,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28213 states, 28211 states have (on average 1.4346177023147) internal successors, (40472), 28212 states have internal predecessors, (40472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:07:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28213 states to 28213 states and 40472 transitions. [2023-12-22 02:07:39,249 INFO L78 Accepts]: Start accepts. Automaton has 28213 states and 40472 transitions. Word has length 96 [2023-12-22 02:07:39,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:07:39,249 INFO L495 AbstractCegarLoop]: Abstraction has 28213 states and 40472 transitions. [2023-12-22 02:07:39,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:07:39,249 INFO L276 IsEmpty]: Start isEmpty. Operand 28213 states and 40472 transitions. [2023-12-22 02:07:39,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-22 02:07:39,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:07:39,252 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 02:07:39,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-22 02:07:39,457 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 02:07:39,457 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:07:39,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:07:39,457 INFO L85 PathProgramCache]: Analyzing trace with hash 436338877, now seen corresponding path program 1 times [2023-12-22 02:07:39,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:07:39,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141140622] [2023-12-22 02:07:39,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:07:39,458 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 02:07:39,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:07:39,459 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 02:07:39,510 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 02:07:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:07:39,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 02:07:39,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:07:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:07:39,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:07:39,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:07:39,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141140622] [2023-12-22 02:07:39,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141140622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:07:39,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:07:39,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:07:39,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603275186] [2023-12-22 02:07:39,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:07:39,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:07:39,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:07:39,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:07:39,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:07:39,898 INFO L87 Difference]: Start difference. First operand 28213 states and 40472 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:08:06,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:08:06,880 INFO L93 Difference]: Finished difference Result 32721 states and 46493 transitions. [2023-12-22 02:08:06,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:08:06,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-22 02:08:06,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:08:06,930 INFO L225 Difference]: With dead ends: 32721 [2023-12-22 02:08:06,930 INFO L226 Difference]: Without dead ends: 29715 [2023-12-22 02:08:06,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 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 02:08:06,938 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 818 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2225 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 2236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.6s IncrementalHoareTripleChecker+Time [2023-12-22 02:08:06,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 821 Invalid, 2236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2225 Invalid, 0 Unknown, 0 Unchecked, 26.6s Time] [2023-12-22 02:08:06,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29715 states. [2023-12-22 02:08:07,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29715 to 29715. [2023-12-22 02:08:07,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29715 states, 29713 states have (on average 1.4146669807828223) internal successors, (42034), 29714 states have internal predecessors, (42034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:08:07,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29715 states to 29715 states and 42034 transitions. [2023-12-22 02:08:07,429 INFO L78 Accepts]: Start accepts. Automaton has 29715 states and 42034 transitions. Word has length 100 [2023-12-22 02:08:07,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:08:07,430 INFO L495 AbstractCegarLoop]: Abstraction has 29715 states and 42034 transitions. [2023-12-22 02:08:07,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:08:07,430 INFO L276 IsEmpty]: Start isEmpty. Operand 29715 states and 42034 transitions. [2023-12-22 02:08:07,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-22 02:08:07,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:08:07,433 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 02:08:07,439 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 (17)] Forceful destruction successful, exit code 0 [2023-12-22 02:08:07,637 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 02:08:07,637 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:08:07,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:08:07,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1623175948, now seen corresponding path program 1 times [2023-12-22 02:08:07,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:08:07,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788439284] [2023-12-22 02:08:07,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:08:07,639 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 02:08:07,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:08:07,640 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 02:08:07,641 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 02:08:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:08:07,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:08:07,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:08:07,780 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:08:07,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:08:07,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:08:07,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788439284] [2023-12-22 02:08:07,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788439284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:08:07,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:08:07,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:08:07,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325169622] [2023-12-22 02:08:07,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:08:07,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:08:07,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:08:07,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:08:07,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:08:07,782 INFO L87 Difference]: Start difference. First operand 29715 states and 42034 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:08:08,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:08:08,106 INFO L93 Difference]: Finished difference Result 45102 states and 64908 transitions. [2023-12-22 02:08:08,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:08:08,107 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-22 02:08:08,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:08:08,132 INFO L225 Difference]: With dead ends: 45102 [2023-12-22 02:08:08,132 INFO L226 Difference]: Without dead ends: 22956 [2023-12-22 02:08:08,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 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 02:08:08,144 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 66 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:08:08,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 3200 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:08:08,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22956 states. [2023-12-22 02:08:08,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22956 to 22954. [2023-12-22 02:08:08,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22954 states, 22952 states have (on average 1.402971418612757) internal successors, (32201), 22953 states have internal predecessors, (32201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:08:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22954 states to 22954 states and 32201 transitions. [2023-12-22 02:08:08,588 INFO L78 Accepts]: Start accepts. Automaton has 22954 states and 32201 transitions. Word has length 100 [2023-12-22 02:08:08,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:08:08,588 INFO L495 AbstractCegarLoop]: Abstraction has 22954 states and 32201 transitions. [2023-12-22 02:08:08,588 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:08:08,588 INFO L276 IsEmpty]: Start isEmpty. Operand 22954 states and 32201 transitions. [2023-12-22 02:08:08,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-22 02:08:08,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:08:08,591 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 02:08:08,594 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 (18)] Ended with exit code 0 [2023-12-22 02:08:08,795 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 02:08:08,796 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:08:08,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:08:08,797 INFO L85 PathProgramCache]: Analyzing trace with hash -635687934, now seen corresponding path program 1 times [2023-12-22 02:08:08,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:08:08,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792279944] [2023-12-22 02:08:08,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:08:08,797 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 02:08:08,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:08:08,799 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 02:08:08,800 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 02:08:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:08:08,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:08:08,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:08:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:08:09,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:08:09,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:08:09,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792279944] [2023-12-22 02:08:09,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792279944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:08:09,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:08:09,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 02:08:09,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589003994] [2023-12-22 02:08:09,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:08:09,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:08:09,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:08:09,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:08:09,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:08:09,027 INFO L87 Difference]: Start difference. First operand 22954 states and 32201 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:08:54,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:08:54,209 INFO L93 Difference]: Finished difference Result 34972 states and 48002 transitions. [2023-12-22 02:08:54,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:08:54,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-22 02:08:54,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:08:54,244 INFO L225 Difference]: With dead ends: 34972 [2023-12-22 02:08:54,245 INFO L226 Difference]: Without dead ends: 28211 [2023-12-22 02:08:54,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 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 02:08:54,256 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 824 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 3044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.8s IncrementalHoareTripleChecker+Time [2023-12-22 02:08:54,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 807 Invalid, 3044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2459 Invalid, 0 Unknown, 0 Unchecked, 44.8s Time] [2023-12-22 02:08:54,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28211 states. [2023-12-22 02:08:54,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28211 to 27460. [2023-12-22 02:08:54,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27460 states, 27458 states have (on average 1.3639376502294414) internal successors, (37451), 27459 states have internal predecessors, (37451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:08:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27460 states to 27460 states and 37451 transitions. [2023-12-22 02:08:54,716 INFO L78 Accepts]: Start accepts. Automaton has 27460 states and 37451 transitions. Word has length 102 [2023-12-22 02:08:54,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:08:54,716 INFO L495 AbstractCegarLoop]: Abstraction has 27460 states and 37451 transitions. [2023-12-22 02:08:54,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:08:54,716 INFO L276 IsEmpty]: Start isEmpty. Operand 27460 states and 37451 transitions. [2023-12-22 02:08:54,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-22 02:08:54,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:08:54,718 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 02:08:54,724 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 02:08:54,924 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 02:08:54,925 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:08:54,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:08:54,925 INFO L85 PathProgramCache]: Analyzing trace with hash -488936975, now seen corresponding path program 1 times [2023-12-22 02:08:54,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:08:54,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837241635] [2023-12-22 02:08:54,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:08:54,925 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 02:08:54,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:08:54,926 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 02:08:54,928 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 02:08:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:08:55,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:08:55,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:08:55,940 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:08:55,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:08:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:08:56,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:08:56,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837241635] [2023-12-22 02:08:56,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837241635] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:08:56,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:08:56,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:08:56,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940730689] [2023-12-22 02:08:56,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:08:56,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:08:56,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:08:56,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:08:56,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:08:56,375 INFO L87 Difference]: Start difference. First operand 27460 states and 37451 transitions. Second operand has 16 states, 16 states have (on average 11.625) internal successors, (186), 16 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:08:59,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:08:59,039 INFO L93 Difference]: Finished difference Result 68654 states and 97456 transitions. [2023-12-22 02:08:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 02:08:59,040 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.625) internal successors, (186), 16 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-22 02:08:59,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:08:59,122 INFO L225 Difference]: With dead ends: 68654 [2023-12-22 02:08:59,122 INFO L226 Difference]: Without dead ends: 53292 [2023-12-22 02:08:59,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-22 02:08:59,138 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 5237 mSDsluCounter, 11257 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5237 SdHoareTripleChecker+Valid, 12876 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:08:59,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5237 Valid, 12876 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-22 02:08:59,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53292 states. [2023-12-22 02:09:00,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53292 to 42820. [2023-12-22 02:09:00,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42820 states, 42818 states have (on average 1.3992946891494231) internal successors, (59915), 42819 states have internal predecessors, (59915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:00,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42820 states to 42820 states and 59915 transitions. [2023-12-22 02:09:00,169 INFO L78 Accepts]: Start accepts. Automaton has 42820 states and 59915 transitions. Word has length 102 [2023-12-22 02:09:00,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:09:00,170 INFO L495 AbstractCegarLoop]: Abstraction has 42820 states and 59915 transitions. [2023-12-22 02:09:00,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.625) internal successors, (186), 16 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:00,170 INFO L276 IsEmpty]: Start isEmpty. Operand 42820 states and 59915 transitions. [2023-12-22 02:09:00,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-22 02:09:00,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:09:00,172 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 02:09:00,178 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 (20)] Ended with exit code 0 [2023-12-22 02:09:00,376 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 02:09:00,376 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:09:00,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:09:00,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1202602111, now seen corresponding path program 1 times [2023-12-22 02:09:00,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:09:00,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963150330] [2023-12-22 02:09:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:09:00,377 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 02:09:00,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:09:00,378 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 02:09:00,379 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 02:09:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:09:00,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:09:00,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:09:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:00,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:09:00,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:09:00,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963150330] [2023-12-22 02:09:00,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963150330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:09:00,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:09:00,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:09:00,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342069921] [2023-12-22 02:09:00,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:09:00,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:09:00,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:09:00,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:09:00,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:09:00,535 INFO L87 Difference]: Start difference. First operand 42820 states and 59915 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:01,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:09:01,079 INFO L93 Difference]: Finished difference Result 58184 states and 82477 transitions. [2023-12-22 02:09:01,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:09:01,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-22 02:09:01,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:09:01,115 INFO L225 Difference]: With dead ends: 58184 [2023-12-22 02:09:01,115 INFO L226 Difference]: Without dead ends: 27462 [2023-12-22 02:09:01,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 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 02:09:01,155 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 60 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:09:01,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 3185 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:09:01,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27462 states. [2023-12-22 02:09:01,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27462 to 27460. [2023-12-22 02:09:01,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27460 states, 27458 states have (on average 1.353448903780319) internal successors, (37163), 27459 states have internal predecessors, (37163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:01,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27460 states to 27460 states and 37163 transitions. [2023-12-22 02:09:01,653 INFO L78 Accepts]: Start accepts. Automaton has 27460 states and 37163 transitions. Word has length 104 [2023-12-22 02:09:01,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:09:01,653 INFO L495 AbstractCegarLoop]: Abstraction has 27460 states and 37163 transitions. [2023-12-22 02:09:01,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:01,653 INFO L276 IsEmpty]: Start isEmpty. Operand 27460 states and 37163 transitions. [2023-12-22 02:09:01,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-22 02:09:01,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:09:01,654 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 02:09:01,658 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 02:09:01,857 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 02:09:01,858 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:09:01,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:09:01,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1986591248, now seen corresponding path program 1 times [2023-12-22 02:09:01,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:09:01,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976217433] [2023-12-22 02:09:01,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:09:01,859 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 02:09:01,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:09:01,860 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 02:09:01,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-22 02:09:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:09:01,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:09:01,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:09:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:03,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:09:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:03,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:09:03,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976217433] [2023-12-22 02:09:03,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976217433] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:09:03,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:09:03,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:09:03,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770843681] [2023-12-22 02:09:03,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:09:03,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:09:03,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:09:03,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:09:03,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:09:03,395 INFO L87 Difference]: Start difference. First operand 27460 states and 37163 transitions. Second operand has 16 states, 16 states have (on average 12.125) internal successors, (194), 16 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:05,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:09:05,919 INFO L93 Difference]: Finished difference Result 71052 states and 100143 transitions. [2023-12-22 02:09:05,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 02:09:05,920 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.125) internal successors, (194), 16 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-12-22 02:09:05,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:09:06,081 INFO L225 Difference]: With dead ends: 71052 [2023-12-22 02:09:06,081 INFO L226 Difference]: Without dead ends: 55690 [2023-12-22 02:09:06,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 02:09:06,098 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 7012 mSDsluCounter, 9639 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7012 SdHoareTripleChecker+Valid, 11296 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:09:06,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7012 Valid, 11296 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 02:09:06,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55690 states. [2023-12-22 02:09:07,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55690 to 43972. [2023-12-22 02:09:07,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43972 states, 43970 states have (on average 1.3757334546281557) internal successors, (60491), 43971 states have internal predecessors, (60491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:07,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43972 states to 43972 states and 60491 transitions. [2023-12-22 02:09:07,496 INFO L78 Accepts]: Start accepts. Automaton has 43972 states and 60491 transitions. Word has length 105 [2023-12-22 02:09:07,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:09:07,497 INFO L495 AbstractCegarLoop]: Abstraction has 43972 states and 60491 transitions. [2023-12-22 02:09:07,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.125) internal successors, (194), 16 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:07,497 INFO L276 IsEmpty]: Start isEmpty. Operand 43972 states and 60491 transitions. [2023-12-22 02:09:07,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-22 02:09:07,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:09:07,499 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-22 02:09:07,503 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 (22)] Ended with exit code 0 [2023-12-22 02:09:07,701 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 02:09:07,701 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:09:07,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:09:07,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1400643060, now seen corresponding path program 1 times [2023-12-22 02:09:07,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:09:07,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360773181] [2023-12-22 02:09:07,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:09:07,702 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 02:09:07,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:09:07,703 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 02:09:07,704 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 02:09:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:09:07,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:09:07,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:09:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:07,830 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:09:07,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:09:07,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360773181] [2023-12-22 02:09:07,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360773181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:09:07,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:09:07,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:09:07,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820250175] [2023-12-22 02:09:07,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:09:07,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:09:07,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:09:07,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:09:07,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:09:07,832 INFO L87 Difference]: Start difference. First operand 43972 states and 60491 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:08,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:09:08,317 INFO L93 Difference]: Finished difference Result 59912 states and 83341 transitions. [2023-12-22 02:09:08,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:09:08,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-22 02:09:08,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:09:08,351 INFO L225 Difference]: With dead ends: 59912 [2023-12-22 02:09:08,352 INFO L226 Difference]: Without dead ends: 28038 [2023-12-22 02:09:08,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 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 02:09:08,375 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 56 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:09:08,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3170 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:09:08,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28038 states. [2023-12-22 02:09:08,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28038 to 28036. [2023-12-22 02:09:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28036 states, 28034 states have (on average 1.3359135335663836) internal successors, (37451), 28035 states have internal predecessors, (37451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28036 states to 28036 states and 37451 transitions. [2023-12-22 02:09:08,961 INFO L78 Accepts]: Start accepts. Automaton has 28036 states and 37451 transitions. Word has length 107 [2023-12-22 02:09:08,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:09:08,961 INFO L495 AbstractCegarLoop]: Abstraction has 28036 states and 37451 transitions. [2023-12-22 02:09:08,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 28036 states and 37451 transitions. [2023-12-22 02:09:08,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-22 02:09:08,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:09:08,963 INFO L195 NwaCegarLoop]: trace histogram [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 02:09:08,968 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 02:09:09,165 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 02:09:09,166 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:09:09,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:09:09,166 INFO L85 PathProgramCache]: Analyzing trace with hash 53687237, now seen corresponding path program 1 times [2023-12-22 02:09:09,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:09:09,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57018366] [2023-12-22 02:09:09,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:09:09,170 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 02:09:09,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:09:09,172 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 02:09:09,173 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 02:09:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:09:09,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:09:09,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:09:10,171 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:10,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:09:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:10,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:09:10,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57018366] [2023-12-22 02:09:10,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57018366] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:09:10,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:09:10,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:09:10,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319196166] [2023-12-22 02:09:10,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:09:10,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:09:10,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:09:10,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:09:10,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:09:10,496 INFO L87 Difference]: Start difference. First operand 28036 states and 37451 transitions. Second operand has 16 states, 16 states have (on average 12.625) internal successors, (202), 16 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:12,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:09:12,909 INFO L93 Difference]: Finished difference Result 71628 states and 99087 transitions. [2023-12-22 02:09:12,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 02:09:12,909 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.625) internal successors, (202), 16 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-22 02:09:12,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:09:12,979 INFO L225 Difference]: With dead ends: 71628 [2023-12-22 02:09:12,979 INFO L226 Difference]: Without dead ends: 55690 [2023-12-22 02:09:13,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 02:09:13,002 INFO L413 NwaCegarLoop]: 1639 mSDtfsCounter, 2243 mSDsluCounter, 11178 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2243 SdHoareTripleChecker+Valid, 12817 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:09:13,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2243 Valid, 12817 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 02:09:13,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55690 states. [2023-12-22 02:09:13,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55690 to 45124. [2023-12-22 02:09:13,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45124 states, 45122 states have (on average 1.3533752936483312) internal successors, (61067), 45123 states have internal predecessors, (61067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:14,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45124 states to 45124 states and 61067 transitions. [2023-12-22 02:09:14,041 INFO L78 Accepts]: Start accepts. Automaton has 45124 states and 61067 transitions. Word has length 108 [2023-12-22 02:09:14,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:09:14,042 INFO L495 AbstractCegarLoop]: Abstraction has 45124 states and 61067 transitions. [2023-12-22 02:09:14,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.625) internal successors, (202), 16 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:14,042 INFO L276 IsEmpty]: Start isEmpty. Operand 45124 states and 61067 transitions. [2023-12-22 02:09:14,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-22 02:09:14,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:09:14,044 INFO L195 NwaCegarLoop]: trace histogram [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 02:09:14,050 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 02:09:14,247 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 02:09:14,248 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:09:14,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:09:14,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1209033747, now seen corresponding path program 1 times [2023-12-22 02:09:14,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:09:14,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183893118] [2023-12-22 02:09:14,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:09:14,249 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 02:09:14,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:09:14,250 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 02:09:14,251 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 02:09:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:09:14,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:09:14,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:09:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:14,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:09:14,418 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:09:14,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183893118] [2023-12-22 02:09:14,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183893118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:09:14,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:09:14,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:09:14,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294148688] [2023-12-22 02:09:14,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:09:14,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:09:14,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:09:14,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:09:14,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:09:14,419 INFO L87 Difference]: Start difference. First operand 45124 states and 61067 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:14,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:09:14,903 INFO L93 Difference]: Finished difference Result 61640 states and 84205 transitions. [2023-12-22 02:09:14,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:09:14,903 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-12-22 02:09:14,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:09:14,935 INFO L225 Difference]: With dead ends: 61640 [2023-12-22 02:09:14,936 INFO L226 Difference]: Without dead ends: 28614 [2023-12-22 02:09:14,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 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 02:09:14,956 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 52 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:09:14,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3155 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:09:14,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28614 states. [2023-12-22 02:09:15,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28614 to 28612. [2023-12-22 02:09:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28612 states, 28610 states have (on average 1.3190842362810207) internal successors, (37739), 28611 states have internal predecessors, (37739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:15,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28612 states to 28612 states and 37739 transitions. [2023-12-22 02:09:15,562 INFO L78 Accepts]: Start accepts. Automaton has 28612 states and 37739 transitions. Word has length 110 [2023-12-22 02:09:15,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:09:15,562 INFO L495 AbstractCegarLoop]: Abstraction has 28612 states and 37739 transitions. [2023-12-22 02:09:15,562 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:15,562 INFO L276 IsEmpty]: Start isEmpty. Operand 28612 states and 37739 transitions. [2023-12-22 02:09:15,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-22 02:09:15,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:09:15,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:15,570 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 02:09:15,768 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 02:09:15,768 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:09:15,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:09:15,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1430025476, now seen corresponding path program 1 times [2023-12-22 02:09:15,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:09:15,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391354944] [2023-12-22 02:09:15,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:09:15,770 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 02:09:15,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:09:15,771 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 02:09:15,775 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 02:09:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:09:15,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:09:15,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:09:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:16,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:09:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:17,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:09:17,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391354944] [2023-12-22 02:09:17,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391354944] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:09:17,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:09:17,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:09:17,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129998501] [2023-12-22 02:09:17,284 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:09:17,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:09:17,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:09:17,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:09:17,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:09:17,285 INFO L87 Difference]: Start difference. First operand 28612 states and 37739 transitions. Second operand has 16 states, 16 states have (on average 13.125) internal successors, (210), 16 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:19,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:09:19,990 INFO L93 Difference]: Finished difference Result 72204 states and 98031 transitions. [2023-12-22 02:09:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 02:09:19,991 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.125) internal successors, (210), 16 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-22 02:09:19,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:09:20,055 INFO L225 Difference]: With dead ends: 72204 [2023-12-22 02:09:20,055 INFO L226 Difference]: Without dead ends: 55690 [2023-12-22 02:09:20,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 02:09:20,066 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 1965 mSDsluCounter, 14160 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1965 SdHoareTripleChecker+Valid, 15781 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:09:20,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1965 Valid, 15781 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-22 02:09:20,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55690 states. [2023-12-22 02:09:21,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55690 to 46276. [2023-12-22 02:09:21,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46276 states, 46274 states have (on average 1.3321303539784761) internal successors, (61643), 46275 states have internal predecessors, (61643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:21,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46276 states to 46276 states and 61643 transitions. [2023-12-22 02:09:21,114 INFO L78 Accepts]: Start accepts. Automaton has 46276 states and 61643 transitions. Word has length 111 [2023-12-22 02:09:21,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:09:21,115 INFO L495 AbstractCegarLoop]: Abstraction has 46276 states and 61643 transitions. [2023-12-22 02:09:21,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.125) internal successors, (210), 16 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:21,115 INFO L276 IsEmpty]: Start isEmpty. Operand 46276 states and 61643 transitions. [2023-12-22 02:09:21,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-22 02:09:21,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:09:21,117 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2023-12-22 02:09:21,120 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 02:09:21,320 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 02:09:21,320 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:09:21,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:09:21,321 INFO L85 PathProgramCache]: Analyzing trace with hash -63694408, now seen corresponding path program 1 times [2023-12-22 02:09:21,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:09:21,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184839159] [2023-12-22 02:09:21,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:09:21,321 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 02:09:21,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:09:21,322 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 02:09:21,324 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 02:09:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:09:21,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:09:21,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:09:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:21,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:09:21,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:09:21,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184839159] [2023-12-22 02:09:21,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184839159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:09:21,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:09:21,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:09:21,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65241283] [2023-12-22 02:09:21,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:09:21,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:09:21,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:09:21,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:09:21,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:09:21,471 INFO L87 Difference]: Start difference. First operand 46276 states and 61643 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:21,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:09:21,879 INFO L93 Difference]: Finished difference Result 63368 states and 85069 transitions. [2023-12-22 02:09:21,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:09:21,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-22 02:09:21,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:09:22,085 INFO L225 Difference]: With dead ends: 63368 [2023-12-22 02:09:22,085 INFO L226 Difference]: Without dead ends: 29190 [2023-12-22 02:09:22,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 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 02:09:22,097 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 48 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:09:22,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:09:22,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29190 states. [2023-12-22 02:09:22,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29190 to 29188. [2023-12-22 02:09:22,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29188 states, 29186 states have (on average 1.302919207839375) internal successors, (38027), 29187 states have internal predecessors, (38027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:22,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29188 states to 29188 states and 38027 transitions. [2023-12-22 02:09:22,697 INFO L78 Accepts]: Start accepts. Automaton has 29188 states and 38027 transitions. Word has length 113 [2023-12-22 02:09:22,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:09:22,698 INFO L495 AbstractCegarLoop]: Abstraction has 29188 states and 38027 transitions. [2023-12-22 02:09:22,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:22,698 INFO L276 IsEmpty]: Start isEmpty. Operand 29188 states and 38027 transitions. [2023-12-22 02:09:22,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-22 02:09:22,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:09:22,699 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:22,704 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 (27)] Forceful destruction successful, exit code 0 [2023-12-22 02:09:22,900 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 02:09:22,900 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:09:22,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:09:22,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1679216743, now seen corresponding path program 1 times [2023-12-22 02:09:22,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:09:22,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231536647] [2023-12-22 02:09:22,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:09:22,901 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 02:09:22,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:09:22,903 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 02:09:22,903 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 (28)] Waiting until timeout for monitored process [2023-12-22 02:09:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:09:22,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:09:22,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:09:23,770 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:23,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:09:24,116 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:24,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:09:24,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231536647] [2023-12-22 02:09:24,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231536647] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:09:24,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:09:24,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:09:24,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666448985] [2023-12-22 02:09:24,117 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:09:24,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:09:24,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:09:24,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:09:24,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:09:24,118 INFO L87 Difference]: Start difference. First operand 29188 states and 38027 transitions. Second operand has 16 states, 16 states have (on average 13.625) internal successors, (218), 16 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:09:26,692 INFO L93 Difference]: Finished difference Result 72780 states and 96975 transitions. [2023-12-22 02:09:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 02:09:26,692 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.625) internal successors, (218), 16 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-22 02:09:26,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:09:26,752 INFO L225 Difference]: With dead ends: 72780 [2023-12-22 02:09:26,752 INFO L226 Difference]: Without dead ends: 55690 [2023-12-22 02:09:26,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 02:09:26,765 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 5045 mSDsluCounter, 15634 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5045 SdHoareTripleChecker+Valid, 17237 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:09:26,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5045 Valid, 17237 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 02:09:26,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55690 states. [2023-12-22 02:09:27,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55690 to 47428. [2023-12-22 02:09:27,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47428 states, 47426 states have (on average 1.3119175136001349) internal successors, (62219), 47427 states have internal predecessors, (62219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:27,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47428 states to 47428 states and 62219 transitions. [2023-12-22 02:09:27,889 INFO L78 Accepts]: Start accepts. Automaton has 47428 states and 62219 transitions. Word has length 114 [2023-12-22 02:09:27,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:09:27,889 INFO L495 AbstractCegarLoop]: Abstraction has 47428 states and 62219 transitions. [2023-12-22 02:09:27,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.625) internal successors, (218), 16 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:27,890 INFO L276 IsEmpty]: Start isEmpty. Operand 47428 states and 62219 transitions. [2023-12-22 02:09:27,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-22 02:09:27,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:09:27,892 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:27,899 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 02:09:28,095 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 02:09:28,095 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:09:28,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:09:28,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1830635943, now seen corresponding path program 1 times [2023-12-22 02:09:28,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:09:28,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166049125] [2023-12-22 02:09:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:09:28,096 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 02:09:28,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:09:28,097 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 02:09:28,100 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 02:09:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:09:28,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:09:28,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:09:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:28,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:09:28,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:09:28,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166049125] [2023-12-22 02:09:28,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166049125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:09:28,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:09:28,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:09:28,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144710506] [2023-12-22 02:09:28,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:09:28,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:09:28,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:09:28,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:09:28,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:09:28,266 INFO L87 Difference]: Start difference. First operand 47428 states and 62219 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:29,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:09:29,066 INFO L93 Difference]: Finished difference Result 65096 states and 85933 transitions. [2023-12-22 02:09:29,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:09:29,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-12-22 02:09:29,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:09:29,102 INFO L225 Difference]: With dead ends: 65096 [2023-12-22 02:09:29,102 INFO L226 Difference]: Without dead ends: 29766 [2023-12-22 02:09:29,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 114 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 02:09:29,124 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 44 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3125 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:09:29,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3125 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:09:29,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29766 states. [2023-12-22 02:09:29,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29766 to 29764. [2023-12-22 02:09:29,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29764 states, 29762 states have (on average 1.2873798803843828) internal successors, (38315), 29763 states have internal predecessors, (38315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:29,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29764 states to 29764 states and 38315 transitions. [2023-12-22 02:09:29,829 INFO L78 Accepts]: Start accepts. Automaton has 29764 states and 38315 transitions. Word has length 116 [2023-12-22 02:09:29,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:09:29,829 INFO L495 AbstractCegarLoop]: Abstraction has 29764 states and 38315 transitions. [2023-12-22 02:09:29,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:29,829 INFO L276 IsEmpty]: Start isEmpty. Operand 29764 states and 38315 transitions. [2023-12-22 02:09:29,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-22 02:09:29,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:09:29,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:29,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-22 02:09:30,034 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 02:09:30,034 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:09:30,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:09:30,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1245485544, now seen corresponding path program 1 times [2023-12-22 02:09:30,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:09:30,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374897577] [2023-12-22 02:09:30,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:09:30,035 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 02:09:30,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:09:30,038 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 02:09:30,038 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 02:09:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:09:30,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:09:30,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:09:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:31,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:09:31,563 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:31,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:09:31,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374897577] [2023-12-22 02:09:31,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374897577] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:09:31,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:09:31,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:09:31,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394690296] [2023-12-22 02:09:31,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:09:31,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:09:31,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:09:31,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:09:31,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:09:31,564 INFO L87 Difference]: Start difference. First operand 29764 states and 38315 transitions. Second operand has 16 states, 16 states have (on average 14.125) internal successors, (226), 16 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:34,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:09:34,045 INFO L93 Difference]: Finished difference Result 73356 states and 95919 transitions. [2023-12-22 02:09:34,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 02:09:34,045 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.125) internal successors, (226), 16 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-12-22 02:09:34,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:09:34,108 INFO L225 Difference]: With dead ends: 73356 [2023-12-22 02:09:34,108 INFO L226 Difference]: Without dead ends: 55690 [2023-12-22 02:09:34,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 02:09:34,120 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 4976 mSDsluCounter, 12423 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4976 SdHoareTripleChecker+Valid, 14008 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 02:09:34,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4976 Valid, 14008 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 02:09:34,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55690 states. [2023-12-22 02:09:35,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55690 to 48580. [2023-12-22 02:09:35,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48580 states, 48578 states have (on average 1.292663345547367) internal successors, (62795), 48579 states have internal predecessors, (62795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:35,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48580 states to 48580 states and 62795 transitions. [2023-12-22 02:09:35,452 INFO L78 Accepts]: Start accepts. Automaton has 48580 states and 62795 transitions. Word has length 117 [2023-12-22 02:09:35,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:09:35,452 INFO L495 AbstractCegarLoop]: Abstraction has 48580 states and 62795 transitions. [2023-12-22 02:09:35,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.125) internal successors, (226), 16 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:35,453 INFO L276 IsEmpty]: Start isEmpty. Operand 48580 states and 62795 transitions. [2023-12-22 02:09:35,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-22 02:09:35,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:09:35,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:35,458 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 (30)] Forceful destruction successful, exit code 0 [2023-12-22 02:09:35,658 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 02:09:35,658 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:09:35,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:09:35,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1100734308, now seen corresponding path program 1 times [2023-12-22 02:09:35,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:09:35,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382368030] [2023-12-22 02:09:35,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:09:35,659 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 02:09:35,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:09:35,660 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 02:09:35,662 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 02:09:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:09:35,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 02:09:35,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:09:35,807 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:35,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 02:09:35,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:09:35,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382368030] [2023-12-22 02:09:35,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382368030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 02:09:35,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 02:09:35,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 02:09:35,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282788662] [2023-12-22 02:09:35,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 02:09:35,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 02:09:35,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:09:35,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 02:09:35,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 02:09:35,808 INFO L87 Difference]: Start difference. First operand 48580 states and 62795 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:36,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:09:36,343 INFO L93 Difference]: Finished difference Result 66714 states and 86563 transitions. [2023-12-22 02:09:36,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 02:09:36,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2023-12-22 02:09:36,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:09:36,388 INFO L225 Difference]: With dead ends: 66714 [2023-12-22 02:09:36,388 INFO L226 Difference]: Without dead ends: 30232 [2023-12-22 02:09:36,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 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 02:09:36,418 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 40 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:09:36,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3110 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 02:09:36,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30232 states. [2023-12-22 02:09:37,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30232 to 30230. [2023-12-22 02:09:37,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30230 states, 30228 states have (on average 1.2693529178245335) internal successors, (38370), 30229 states have internal predecessors, (38370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:37,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30230 states to 30230 states and 38370 transitions. [2023-12-22 02:09:37,496 INFO L78 Accepts]: Start accepts. Automaton has 30230 states and 38370 transitions. Word has length 119 [2023-12-22 02:09:37,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:09:37,497 INFO L495 AbstractCegarLoop]: Abstraction has 30230 states and 38370 transitions. [2023-12-22 02:09:37,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:37,497 INFO L276 IsEmpty]: Start isEmpty. Operand 30230 states and 38370 transitions. [2023-12-22 02:09:37,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-22 02:09:37,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:09:37,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:37,502 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 (31)] Forceful destruction successful, exit code 0 [2023-12-22 02:09:37,702 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 02:09:37,702 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:09:37,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:09:37,703 INFO L85 PathProgramCache]: Analyzing trace with hash 321412461, now seen corresponding path program 1 times [2023-12-22 02:09:37,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:09:37,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420537149] [2023-12-22 02:09:37,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:09:37,703 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 02:09:37,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:09:37,704 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 02:09:37,706 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 02:09:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:09:37,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 02:09:37,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:09:38,600 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:38,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:09:39,139 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:39,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:09:39,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420537149] [2023-12-22 02:09:39,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420537149] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:09:39,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:09:39,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 02:09:39,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833241060] [2023-12-22 02:09:39,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:09:39,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 02:09:39,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:09:39,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 02:09:39,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 02:09:39,141 INFO L87 Difference]: Start difference. First operand 30230 states and 38370 transitions. Second operand has 16 states, 16 states have (on average 14.625) internal successors, (234), 16 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:41,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:09:41,581 INFO L93 Difference]: Finished difference Result 63544 states and 81287 transitions. [2023-12-22 02:09:41,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-22 02:09:41,582 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.625) internal successors, (234), 16 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-12-22 02:09:41,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:09:41,630 INFO L225 Difference]: With dead ends: 63544 [2023-12-22 02:09:41,630 INFO L226 Difference]: Without dead ends: 45412 [2023-12-22 02:09:41,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-22 02:09:41,644 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 3498 mSDsluCounter, 12474 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3498 SdHoareTripleChecker+Valid, 14041 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:09:41,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3498 Valid, 14041 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 02:09:41,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45412 states. [2023-12-22 02:09:42,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45412 to 43042. [2023-12-22 02:09:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43042 states, 43040 states have (on average 1.2673791821561338) internal successors, (54548), 43041 states have internal predecessors, (54548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:42,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43042 states to 43042 states and 54548 transitions. [2023-12-22 02:09:42,779 INFO L78 Accepts]: Start accepts. Automaton has 43042 states and 54548 transitions. Word has length 120 [2023-12-22 02:09:42,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:09:42,779 INFO L495 AbstractCegarLoop]: Abstraction has 43042 states and 54548 transitions. [2023-12-22 02:09:42,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.625) internal successors, (234), 16 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:42,779 INFO L276 IsEmpty]: Start isEmpty. Operand 43042 states and 54548 transitions. [2023-12-22 02:09:42,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-22 02:09:42,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:09:42,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:42,788 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 02:09:42,985 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 02:09:42,986 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:09:42,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:09:42,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1271132475, now seen corresponding path program 1 times [2023-12-22 02:09:42,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:09:42,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465000955] [2023-12-22 02:09:42,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:09:42,987 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 02:09:42,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:09:42,988 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 02:09:42,989 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 02:09:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:09:43,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 02:09:43,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:09:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 02:09:43,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:09:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 02:09:43,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:09:43,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465000955] [2023-12-22 02:09:43,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465000955] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:09:43,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:09:43,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 02:09:43,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116221096] [2023-12-22 02:09:43,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:09:43,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 02:09:43,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:09:43,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 02:09:43,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-22 02:09:43,476 INFO L87 Difference]: Start difference. First operand 43042 states and 54548 transitions. Second operand has 6 states, 6 states have (on average 39.333333333333336) internal successors, (236), 6 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:46,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:09:46,302 INFO L93 Difference]: Finished difference Result 131950 states and 167018 transitions. [2023-12-22 02:09:46,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 02:09:46,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 39.333333333333336) internal successors, (236), 6 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2023-12-22 02:09:46,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:09:46,426 INFO L225 Difference]: With dead ends: 131950 [2023-12-22 02:09:46,426 INFO L226 Difference]: Without dead ends: 101006 [2023-12-22 02:09:46,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:09:46,443 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 1653 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:09:46,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1653 Valid, 3404 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 02:09:46,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101006 states. [2023-12-22 02:09:49,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101006 to 100684. [2023-12-22 02:09:49,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100684 states, 100682 states have (on average 1.2254424822709125) internal successors, (123380), 100683 states have internal predecessors, (123380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:49,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100684 states to 100684 states and 123380 transitions. [2023-12-22 02:09:49,859 INFO L78 Accepts]: Start accepts. Automaton has 100684 states and 123380 transitions. Word has length 122 [2023-12-22 02:09:49,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:09:49,860 INFO L495 AbstractCegarLoop]: Abstraction has 100684 states and 123380 transitions. [2023-12-22 02:09:49,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.333333333333336) internal successors, (236), 6 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:09:49,860 INFO L276 IsEmpty]: Start isEmpty. Operand 100684 states and 123380 transitions. [2023-12-22 02:09:49,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-22 02:09:49,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:09:49,871 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-22 02:09:49,877 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 02:09:50,075 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 02:09:50,075 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:09:50,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:09:50,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1116389205, now seen corresponding path program 1 times [2023-12-22 02:09:50,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:09:50,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847362160] [2023-12-22 02:09:50,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:09:50,076 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 02:09:50,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:09:50,077 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 02:09:50,079 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 02:09:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:09:50,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 02:09:50,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:09:50,818 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 33 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:50,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:09:51,451 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 33 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:09:51,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:09:51,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847362160] [2023-12-22 02:09:51,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847362160] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:09:51,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:09:51,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 02:09:51,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783900073] [2023-12-22 02:09:51,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:09:51,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 02:09:51,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:09:51,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 02:09:51,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-22 02:09:51,453 INFO L87 Difference]: Start difference. First operand 100684 states and 123380 transitions. Second operand has 7 states, 7 states have (on average 38.714285714285715) internal successors, (271), 6 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:11:49,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:11:49,096 INFO L93 Difference]: Finished difference Result 127832 states and 159644 transitions. [2023-12-22 02:11:49,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-22 02:11:49,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 38.714285714285715) internal successors, (271), 6 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2023-12-22 02:11:49,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:11:49,236 INFO L225 Difference]: With dead ends: 127832 [2023-12-22 02:11:49,237 INFO L226 Difference]: Without dead ends: 115814 [2023-12-22 02:11:49,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-22 02:11:49,258 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 5943 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 11106 mSolverCounterSat, 2701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5943 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 13807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2701 IncrementalHoareTripleChecker+Valid, 11106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:11:49,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5943 Valid, 817 Invalid, 13807 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2701 Valid, 11106 Invalid, 0 Unknown, 0 Unchecked, 114.1s Time] [2023-12-22 02:11:49,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115814 states. [2023-12-22 02:11:52,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115814 to 111949. [2023-12-22 02:11:52,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111949 states, 111947 states have (on average 1.222158700099154) internal successors, (136817), 111948 states have internal predecessors, (136817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:11:52,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111949 states to 111949 states and 136817 transitions. [2023-12-22 02:11:52,731 INFO L78 Accepts]: Start accepts. Automaton has 111949 states and 136817 transitions. Word has length 165 [2023-12-22 02:11:52,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:11:52,731 INFO L495 AbstractCegarLoop]: Abstraction has 111949 states and 136817 transitions. [2023-12-22 02:11:52,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 38.714285714285715) internal successors, (271), 6 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:11:52,732 INFO L276 IsEmpty]: Start isEmpty. Operand 111949 states and 136817 transitions. [2023-12-22 02:11:52,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-22 02:11:52,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:11:52,755 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:52,759 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 02:11:52,959 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 02:11:52,959 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:11:52,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:11:52,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1508855699, now seen corresponding path program 1 times [2023-12-22 02:11:52,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:11:52,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791539517] [2023-12-22 02:11:52,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:11:52,960 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 02:11:52,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:11:52,961 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 02:11:52,965 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 02:11:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:11:53,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 02:11:53,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:11:55,020 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 61 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:11:55,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:11:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 61 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:11:55,814 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:11:55,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791539517] [2023-12-22 02:11:55,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791539517] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:11:55,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:11:55,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 02:11:55,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395357600] [2023-12-22 02:11:55,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:11:55,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:11:55,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:11:55,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:11:55,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:11:55,817 INFO L87 Difference]: Start difference. First operand 111949 states and 136817 transitions. Second operand has 26 states, 26 states have (on average 12.76923076923077) internal successors, (332), 26 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:12:06,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:12:06,417 INFO L93 Difference]: Finished difference Result 204935 states and 249678 transitions. [2023-12-22 02:12:06,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-22 02:12:06,418 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.76923076923077) internal successors, (332), 26 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2023-12-22 02:12:06,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:12:06,710 INFO L225 Difference]: With dead ends: 204935 [2023-12-22 02:12:06,711 INFO L226 Difference]: Without dead ends: 162821 [2023-12-22 02:12:06,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1033, Invalid=5129, Unknown=0, NotChecked=0, Total=6162 [2023-12-22 02:12:06,777 INFO L413 NwaCegarLoop]: 1707 mSDtfsCounter, 7205 mSDsluCounter, 19792 mSDsCounter, 0 mSdLazyCounter, 2770 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7205 SdHoareTripleChecker+Valid, 21499 SdHoareTripleChecker+Invalid, 2796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-22 02:12:06,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7205 Valid, 21499 Invalid, 2796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2770 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-22 02:12:06,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162821 states. [2023-12-22 02:12:10,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162821 to 85245. [2023-12-22 02:12:10,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85245 states, 85243 states have (on average 1.2204990439097638) internal successors, (104039), 85244 states have internal predecessors, (104039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:12:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85245 states to 85245 states and 104039 transitions. [2023-12-22 02:12:10,454 INFO L78 Accepts]: Start accepts. Automaton has 85245 states and 104039 transitions. Word has length 181 [2023-12-22 02:12:10,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:12:10,454 INFO L495 AbstractCegarLoop]: Abstraction has 85245 states and 104039 transitions. [2023-12-22 02:12:10,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.76923076923077) internal successors, (332), 26 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:12:10,455 INFO L276 IsEmpty]: Start isEmpty. Operand 85245 states and 104039 transitions. [2023-12-22 02:12:10,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-22 02:12:10,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:12:10,469 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-22 02:12:10,479 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 02:12:10,672 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 02:12:10,673 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:12:10,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:12:10,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1082983532, now seen corresponding path program 1 times [2023-12-22 02:12:10,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:12:10,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039015336] [2023-12-22 02:12:10,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:12:10,674 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 02:12:10,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:12:10,675 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 02:12:10,677 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 02:12:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:12:10,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 02:12:10,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:12:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 54 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:12:12,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:12:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 54 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:12:13,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:12:13,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039015336] [2023-12-22 02:12:13,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039015336] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:12:13,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:12:13,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 02:12:13,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545123390] [2023-12-22 02:12:13,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:12:13,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:12:13,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:12:13,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:12:13,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:12:13,117 INFO L87 Difference]: Start difference. First operand 85245 states and 104039 transitions. Second operand has 26 states, 26 states have (on average 12.923076923076923) internal successors, (336), 25 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:12:18,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:12:18,098 INFO L93 Difference]: Finished difference Result 134229 states and 165446 transitions. [2023-12-22 02:12:18,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 02:12:18,099 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.923076923076923) internal successors, (336), 25 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2023-12-22 02:12:18,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:12:18,339 INFO L225 Difference]: With dead ends: 134229 [2023-12-22 02:12:18,339 INFO L226 Difference]: Without dead ends: 98385 [2023-12-22 02:12:18,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=417, Invalid=1563, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 02:12:18,366 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 15625 mSDsluCounter, 10017 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15625 SdHoareTripleChecker+Valid, 11581 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-22 02:12:18,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15625 Valid, 11581 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1409 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-22 02:12:18,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98385 states. [2023-12-22 02:12:21,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98385 to 85245. [2023-12-22 02:12:21,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85245 states, 85243 states have (on average 1.2154429102682918) internal successors, (103608), 85244 states have internal predecessors, (103608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:12:21,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85245 states to 85245 states and 103608 transitions. [2023-12-22 02:12:21,774 INFO L78 Accepts]: Start accepts. Automaton has 85245 states and 103608 transitions. Word has length 182 [2023-12-22 02:12:21,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:12:21,774 INFO L495 AbstractCegarLoop]: Abstraction has 85245 states and 103608 transitions. [2023-12-22 02:12:21,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.923076923076923) internal successors, (336), 25 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:12:21,774 INFO L276 IsEmpty]: Start isEmpty. Operand 85245 states and 103608 transitions. [2023-12-22 02:12:21,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-22 02:12:21,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:12:21,783 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-22 02:12:21,789 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 02:12:21,986 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 02:12:21,987 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:12:21,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:12:21,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1077855596, now seen corresponding path program 1 times [2023-12-22 02:12:21,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:12:21,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913386307] [2023-12-22 02:12:21,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:12:21,988 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 02:12:21,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:12:21,989 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 02:12:21,997 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 02:12:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:12:22,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 02:12:22,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:12:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 53 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:12:23,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:12:24,401 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 53 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:12:24,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:12:24,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913386307] [2023-12-22 02:12:24,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913386307] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:12:24,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:12:24,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 02:12:24,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196169014] [2023-12-22 02:12:24,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:12:24,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:12:24,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:12:24,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:12:24,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:12:24,403 INFO L87 Difference]: Start difference. First operand 85245 states and 103608 transitions. Second operand has 26 states, 26 states have (on average 13.0) internal successors, (338), 26 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:12:37,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:12:37,726 INFO L93 Difference]: Finished difference Result 211179 states and 256444 transitions. [2023-12-22 02:12:37,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-22 02:12:37,727 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.0) internal successors, (338), 26 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2023-12-22 02:12:37,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:12:38,014 INFO L225 Difference]: With dead ends: 211179 [2023-12-22 02:12:38,014 INFO L226 Difference]: Without dead ends: 199177 [2023-12-22 02:12:38,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1060 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=881, Invalid=4089, Unknown=0, NotChecked=0, Total=4970 [2023-12-22 02:12:38,045 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 5880 mSDsluCounter, 23235 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5880 SdHoareTripleChecker+Valid, 24934 SdHoareTripleChecker+Invalid, 3315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:12:38,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5880 Valid, 24934 Invalid, 3315 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-22 02:12:38,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199177 states. [2023-12-22 02:12:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199177 to 103213. [2023-12-22 02:12:43,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103213 states, 103211 states have (on average 1.2159265969712532) internal successors, (125497), 103212 states have internal predecessors, (125497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:12:43,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103213 states to 103213 states and 125497 transitions. [2023-12-22 02:12:43,761 INFO L78 Accepts]: Start accepts. Automaton has 103213 states and 125497 transitions. Word has length 182 [2023-12-22 02:12:43,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:12:43,761 INFO L495 AbstractCegarLoop]: Abstraction has 103213 states and 125497 transitions. [2023-12-22 02:12:43,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.0) internal successors, (338), 26 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:12:43,761 INFO L276 IsEmpty]: Start isEmpty. Operand 103213 states and 125497 transitions. [2023-12-22 02:12:43,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-22 02:12:43,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:12:43,771 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 02:12:43,777 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 (37)] Forceful destruction successful, exit code 0 [2023-12-22 02:12:43,974 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 02:12:43,975 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:12:43,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:12:43,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1205776061, now seen corresponding path program 1 times [2023-12-22 02:12:43,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:12:43,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872882873] [2023-12-22 02:12:43,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:12:43,976 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 02:12:43,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:12:43,977 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 02:12:43,978 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 02:12:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:12:44,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 02:12:44,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:12:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 46 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:12:45,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:12:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 46 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:12:46,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:12:46,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872882873] [2023-12-22 02:12:46,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872882873] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:12:46,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:12:46,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 02:12:46,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589560602] [2023-12-22 02:12:46,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:12:46,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:12:46,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:12:46,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:12:46,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:12:46,140 INFO L87 Difference]: Start difference. First operand 103213 states and 125497 transitions. Second operand has 26 states, 26 states have (on average 13.153846153846153) internal successors, (342), 25 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:12:52,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:12:52,780 INFO L93 Difference]: Finished difference Result 153833 states and 188539 transitions. [2023-12-22 02:12:52,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 02:12:52,781 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.153846153846153) internal successors, (342), 25 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2023-12-22 02:12:52,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:12:52,920 INFO L225 Difference]: With dead ends: 153833 [2023-12-22 02:12:52,921 INFO L226 Difference]: Without dead ends: 117365 [2023-12-22 02:12:52,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 02:12:52,955 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 13957 mSDsluCounter, 9999 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13957 SdHoareTripleChecker+Valid, 11563 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-22 02:12:52,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13957 Valid, 11563 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-22 02:12:53,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117365 states. [2023-12-22 02:12:57,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117365 to 103213. [2023-12-22 02:12:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103213 states, 103211 states have (on average 1.2123610855432077) internal successors, (125129), 103212 states have internal predecessors, (125129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:12:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103213 states to 103213 states and 125129 transitions. [2023-12-22 02:12:58,216 INFO L78 Accepts]: Start accepts. Automaton has 103213 states and 125129 transitions. Word has length 183 [2023-12-22 02:12:58,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:12:58,216 INFO L495 AbstractCegarLoop]: Abstraction has 103213 states and 125129 transitions. [2023-12-22 02:12:58,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.153846153846153) internal successors, (342), 25 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:12:58,217 INFO L276 IsEmpty]: Start isEmpty. Operand 103213 states and 125129 transitions. [2023-12-22 02:12:58,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-22 02:12:58,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:12:58,226 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 02:12:58,230 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 (38)] Forceful destruction successful, exit code 0 [2023-12-22 02:12:58,430 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 02:12:58,431 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:12:58,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:12:58,431 INFO L85 PathProgramCache]: Analyzing trace with hash 2121669955, now seen corresponding path program 1 times [2023-12-22 02:12:58,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:12:58,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775868719] [2023-12-22 02:12:58,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:12:58,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:12:58,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:12:58,433 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 02:12:58,434 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 02:12:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:12:58,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 02:12:58,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:13:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 45 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:13:00,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:13:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 45 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:13:01,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:13:01,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775868719] [2023-12-22 02:13:01,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775868719] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:13:01,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:13:01,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 02:13:01,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451491762] [2023-12-22 02:13:01,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:13:01,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:13:01,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:13:01,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:13:01,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:13:01,014 INFO L87 Difference]: Start difference. First operand 103213 states and 125129 transitions. Second operand has 26 states, 26 states have (on average 13.23076923076923) internal successors, (344), 26 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:13:19,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:13:19,047 INFO L93 Difference]: Finished difference Result 256965 states and 312212 transitions. [2023-12-22 02:13:19,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 02:13:19,048 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.23076923076923) internal successors, (344), 26 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2023-12-22 02:13:19,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:13:19,426 INFO L225 Difference]: With dead ends: 256965 [2023-12-22 02:13:19,426 INFO L226 Difference]: Without dead ends: 241235 [2023-12-22 02:13:19,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 02:13:19,479 INFO L413 NwaCegarLoop]: 1725 mSDtfsCounter, 5874 mSDsluCounter, 23440 mSDsCounter, 0 mSdLazyCounter, 3438 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5874 SdHoareTripleChecker+Valid, 25165 SdHoareTripleChecker+Invalid, 3458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-22 02:13:19,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5874 Valid, 25165 Invalid, 3458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 3438 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-22 02:13:19,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241235 states. [2023-12-22 02:13:27,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241235 to 124718. [2023-12-22 02:13:27,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124718 states, 124716 states have (on average 1.2118653580935885) internal successors, (151139), 124717 states have internal predecessors, (151139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:13:27,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124718 states to 124718 states and 151139 transitions. [2023-12-22 02:13:27,775 INFO L78 Accepts]: Start accepts. Automaton has 124718 states and 151139 transitions. Word has length 183 [2023-12-22 02:13:27,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:13:27,775 INFO L495 AbstractCegarLoop]: Abstraction has 124718 states and 151139 transitions. [2023-12-22 02:13:27,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.23076923076923) internal successors, (344), 26 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:13:27,776 INFO L276 IsEmpty]: Start isEmpty. Operand 124718 states and 151139 transitions. [2023-12-22 02:13:27,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-22 02:13:27,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:13:27,786 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-22 02:13:27,791 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 (39)] Ended with exit code 0 [2023-12-22 02:13:27,990 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 02:13:27,990 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:13:27,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:13:27,991 INFO L85 PathProgramCache]: Analyzing trace with hash 158493956, now seen corresponding path program 1 times [2023-12-22 02:13:27,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:13:27,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117976594] [2023-12-22 02:13:27,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:13:27,991 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 02:13:27,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:13:27,992 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 02:13:27,994 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 02:13:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:13:28,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 02:13:28,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:13:29,886 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 38 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:13:29,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:13:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 38 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:13:30,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:13:30,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117976594] [2023-12-22 02:13:30,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117976594] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:13:30,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:13:30,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 02:13:30,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500842683] [2023-12-22 02:13:30,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:13:30,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:13:30,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:13:30,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:13:30,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:13:30,352 INFO L87 Difference]: Start difference. First operand 124718 states and 151139 transitions. Second operand has 26 states, 26 states have (on average 13.384615384615385) internal successors, (348), 25 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:13:39,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:13:39,125 INFO L93 Difference]: Finished difference Result 184569 states and 225239 transitions. [2023-12-22 02:13:39,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 02:13:39,126 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.384615384615385) internal successors, (348), 25 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2023-12-22 02:13:39,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:13:39,325 INFO L225 Difference]: With dead ends: 184569 [2023-12-22 02:13:39,325 INFO L226 Difference]: Without dead ends: 138414 [2023-12-22 02:13:39,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 02:13:39,353 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 18396 mSDsluCounter, 8115 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18396 SdHoareTripleChecker+Valid, 9679 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 02:13:39,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18396 Valid, 9679 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 02:13:39,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138414 states. [2023-12-22 02:13:47,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138414 to 124718. [2023-12-22 02:13:47,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124718 states, 124716 states have (on average 1.2079845408768723) internal successors, (150655), 124717 states have internal predecessors, (150655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:13:47,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124718 states to 124718 states and 150655 transitions. [2023-12-22 02:13:47,401 INFO L78 Accepts]: Start accepts. Automaton has 124718 states and 150655 transitions. Word has length 184 [2023-12-22 02:13:47,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:13:47,401 INFO L495 AbstractCegarLoop]: Abstraction has 124718 states and 150655 transitions. [2023-12-22 02:13:47,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.384615384615385) internal successors, (348), 25 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:13:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 124718 states and 150655 transitions. [2023-12-22 02:13:47,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-22 02:13:47,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:13:47,426 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-22 02:13:47,444 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 02:13:47,627 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 02:13:47,627 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:13:47,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:13:47,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1860418044, now seen corresponding path program 1 times [2023-12-22 02:13:47,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:13:47,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293000731] [2023-12-22 02:13:47,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:13:47,628 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 02:13:47,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:13:47,629 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 02:13:47,631 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 02:13:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:13:47,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 02:13:47,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:13:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 37 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:13:49,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:13:50,536 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 37 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:13:50,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:13:50,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293000731] [2023-12-22 02:13:50,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293000731] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:13:50,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:13:50,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 02:13:50,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659361209] [2023-12-22 02:13:50,537 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:13:50,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:13:50,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:13:50,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:13:50,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:13:50,539 INFO L87 Difference]: Start difference. First operand 124718 states and 150655 transitions. Second operand has 26 states, 26 states have (on average 13.461538461538462) internal successors, (350), 26 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:14:12,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:14:12,955 INFO L93 Difference]: Finished difference Result 313080 states and 378623 transitions. [2023-12-22 02:14:12,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 02:14:12,955 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.461538461538462) internal successors, (350), 26 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2023-12-22 02:14:12,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:14:13,349 INFO L225 Difference]: With dead ends: 313080 [2023-12-22 02:14:13,350 INFO L226 Difference]: Without dead ends: 292982 [2023-12-22 02:14:13,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 02:14:13,569 INFO L413 NwaCegarLoop]: 1711 mSDtfsCounter, 2520 mSDsluCounter, 23305 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2520 SdHoareTripleChecker+Valid, 25016 SdHoareTripleChecker+Invalid, 3284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-22 02:14:13,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2520 Valid, 25016 Invalid, 3284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3268 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-22 02:14:13,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292982 states. [2023-12-22 02:14:25,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292982 to 151075. [2023-12-22 02:14:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151075 states, 151073 states have (on average 1.2069396914074653) internal successors, (182336), 151074 states have internal predecessors, (182336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:14:25,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151075 states to 151075 states and 182336 transitions. [2023-12-22 02:14:25,589 INFO L78 Accepts]: Start accepts. Automaton has 151075 states and 182336 transitions. Word has length 184 [2023-12-22 02:14:25,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:14:25,590 INFO L495 AbstractCegarLoop]: Abstraction has 151075 states and 182336 transitions. [2023-12-22 02:14:25,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.461538461538462) internal successors, (350), 26 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:14:25,590 INFO L276 IsEmpty]: Start isEmpty. Operand 151075 states and 182336 transitions. [2023-12-22 02:14:25,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-22 02:14:25,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:14:25,605 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 02:14:25,608 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 02:14:25,808 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 02:14:25,809 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:14:25,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:14:25,809 INFO L85 PathProgramCache]: Analyzing trace with hash 214289651, now seen corresponding path program 1 times [2023-12-22 02:14:25,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:14:25,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009250923] [2023-12-22 02:14:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:14:25,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 02:14:25,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:14:25,810 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 02:14:25,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-22 02:14:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:14:25,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 02:14:25,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:14:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 30 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:14:27,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:14:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 30 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:14:28,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:14:28,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009250923] [2023-12-22 02:14:28,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009250923] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:14:28,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:14:28,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 02:14:28,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213134867] [2023-12-22 02:14:28,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:14:28,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:14:28,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:14:28,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:14:28,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:14:28,379 INFO L87 Difference]: Start difference. First operand 151075 states and 182336 transitions. Second operand has 26 states, 26 states have (on average 13.615384615384615) internal successors, (354), 25 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:14:40,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:14:40,598 INFO L93 Difference]: Finished difference Result 220353 states and 267513 transitions. [2023-12-22 02:14:40,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 02:14:40,599 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.615384615384615) internal successors, (354), 25 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2023-12-22 02:14:40,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:14:40,813 INFO L225 Difference]: With dead ends: 220353 [2023-12-22 02:14:40,814 INFO L226 Difference]: Without dead ends: 162749 [2023-12-22 02:14:40,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 02:14:40,847 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 17198 mSDsluCounter, 8287 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17198 SdHoareTripleChecker+Valid, 9851 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 02:14:40,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17198 Valid, 9851 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 02:14:40,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162749 states. [2023-12-22 02:14:51,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162749 to 151075. [2023-12-22 02:14:52,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151075 states, 151073 states have (on average 1.2027430447531988) internal successors, (181702), 151074 states have internal predecessors, (181702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:14:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151075 states to 151075 states and 181702 transitions. [2023-12-22 02:14:52,262 INFO L78 Accepts]: Start accepts. Automaton has 151075 states and 181702 transitions. Word has length 185 [2023-12-22 02:14:52,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:14:52,262 INFO L495 AbstractCegarLoop]: Abstraction has 151075 states and 181702 transitions. [2023-12-22 02:14:52,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.615384615384615) internal successors, (354), 25 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:14:52,262 INFO L276 IsEmpty]: Start isEmpty. Operand 151075 states and 181702 transitions. [2023-12-22 02:14:52,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-22 02:14:52,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:14:52,275 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 02:14:52,279 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 (42)] Ended with exit code 0 [2023-12-22 02:14:52,481 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 02:14:52,481 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:14:52,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:14:52,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1012085491, now seen corresponding path program 1 times [2023-12-22 02:14:52,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:14:52,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322844915] [2023-12-22 02:14:52,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:14:52,482 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 02:14:52,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:14:52,483 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 02:14:52,485 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 02:14:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:14:52,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 02:14:52,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:14:54,447 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 29 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:14:54,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:14:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 29 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:14:55,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:14:55,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322844915] [2023-12-22 02:14:55,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322844915] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:14:55,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:14:55,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 02:14:55,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062270222] [2023-12-22 02:14:55,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:14:55,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:14:55,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:14:55,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:14:55,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:14:55,154 INFO L87 Difference]: Start difference. First operand 151075 states and 181702 transitions. Second operand has 26 states, 26 states have (on average 13.692307692307692) internal successors, (356), 26 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:26,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:15:26,501 INFO L93 Difference]: Finished difference Result 371761 states and 446990 transitions. [2023-12-22 02:15:26,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 02:15:26,501 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.692307692307692) internal successors, (356), 26 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2023-12-22 02:15:26,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:15:27,174 INFO L225 Difference]: With dead ends: 371761 [2023-12-22 02:15:27,175 INFO L226 Difference]: Without dead ends: 346087 [2023-12-22 02:15:27,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 02:15:27,246 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 5685 mSDsluCounter, 24516 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5685 SdHoareTripleChecker+Valid, 26215 SdHoareTripleChecker+Invalid, 3048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-22 02:15:27,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5685 Valid, 26215 Invalid, 3048 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-22 02:15:27,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346087 states. [2023-12-22 02:15:44,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346087 to 181707. [2023-12-22 02:15:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181707 states, 181705 states have (on average 1.2013098153600617) internal successors, (218284), 181706 states have internal predecessors, (218284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181707 states to 181707 states and 218284 transitions. [2023-12-22 02:15:45,047 INFO L78 Accepts]: Start accepts. Automaton has 181707 states and 218284 transitions. Word has length 185 [2023-12-22 02:15:45,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 02:15:45,047 INFO L495 AbstractCegarLoop]: Abstraction has 181707 states and 218284 transitions. [2023-12-22 02:15:45,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.692307692307692) internal successors, (356), 26 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:15:45,047 INFO L276 IsEmpty]: Start isEmpty. Operand 181707 states and 218284 transitions. [2023-12-22 02:15:45,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-22 02:15:45,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 02:15:45,061 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-22 02:15:45,067 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 (43)] Ended with exit code 0 [2023-12-22 02:15:45,267 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 02:15:45,267 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 02:15:45,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 02:15:45,267 INFO L85 PathProgramCache]: Analyzing trace with hash -166742412, now seen corresponding path program 1 times [2023-12-22 02:15:45,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 02:15:45,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512910487] [2023-12-22 02:15:45,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 02:15:45,268 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 02:15:45,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 02:15:45,269 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 02:15:45,272 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 02:15:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 02:15:45,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 02:15:45,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 02:15:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 22 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:47,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 02:15:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 22 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 02:15:47,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 02:15:47,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512910487] [2023-12-22 02:15:47,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512910487] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 02:15:47,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 02:15:47,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 02:15:47,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997876794] [2023-12-22 02:15:47,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 02:15:47,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 02:15:47,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 02:15:47,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 02:15:47,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 02:15:47,762 INFO L87 Difference]: Start difference. First operand 181707 states and 218284 transitions. Second operand has 26 states, 26 states have (on average 13.846153846153847) internal successors, (360), 25 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 02:16:05,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 02:16:05,024 INFO L93 Difference]: Finished difference Result 259057 states and 312613 transitions. [2023-12-22 02:16:05,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 02:16:05,025 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.846153846153847) internal successors, (360), 25 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2023-12-22 02:16:05,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 02:16:05,415 INFO L225 Difference]: With dead ends: 259057 [2023-12-22 02:16:05,416 INFO L226 Difference]: Without dead ends: 189369 [2023-12-22 02:16:05,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 02:16:05,475 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 15431 mSDsluCounter, 6652 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15431 SdHoareTripleChecker+Valid, 8216 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 02:16:05,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15431 Valid, 8216 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 02:16:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189369 states.