/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/Problem05_label44+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 21:55:22,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 21:55:22,817 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 21:55:22,820 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 21:55:22,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 21:55:22,834 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 21:55:22,835 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 21:55:22,835 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 21:55:22,835 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 21:55:22,836 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 21:55:22,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 21:55:22,836 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 21:55:22,836 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 21:55:22,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 21:55:22,837 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 21:55:22,837 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 21:55:22,837 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 21:55:22,838 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 21:55:22,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 21:55:22,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 21:55:22,838 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 21:55:22,839 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 21:55:22,839 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 21:55:22,839 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 21:55:22,839 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 21:55:22,839 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 21:55:22,839 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 21:55:22,840 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 21:55:22,840 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 21:55:22,840 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 21:55:22,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 21:55:22,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 21:55:22,841 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 21:55:22,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 21:55:22,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:55:22,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 21:55:22,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 21:55:22,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 21:55:22,842 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 21:55:22,842 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 21:55:22,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 21:55:22,852 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 21:55:22,852 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 21:55:22,852 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 21:55:22,853 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 21:55:22,853 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 21:55:22,853 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 21:55:23,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 21:55:23,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 21:55:23,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 21:55:23,101 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 21:55:23,101 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 21:55:23,103 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label44+token_ring.04.cil-1.c [2023-12-21 21:55:24,136 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 21:55:24,670 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 21:55:24,670 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.04.cil-1.c [2023-12-21 21:55:24,726 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94875043c/0186b82e775f48249e8b99f2b3215926/FLAG5dfe7b898 [2023-12-21 21:55:25,220 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94875043c/0186b82e775f48249e8b99f2b3215926 [2023-12-21 21:55:25,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 21:55:25,225 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 21:55:25,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 21:55:25,226 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 21:55:25,229 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 21:55:25,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:55:25" (1/1) ... [2023-12-21 21:55:25,230 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36305b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:25, skipping insertion in model container [2023-12-21 21:55:25,230 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:55:25" (1/1) ... [2023-12-21 21:55:25,408 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 21:55:26,768 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/Problem05_label44+token_ring.04.cil-1.c[377340,377353] [2023-12-21 21:55:26,790 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/Problem05_label44+token_ring.04.cil-1.c[383339,383352] [2023-12-21 21:55:26,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:55:26,927 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 21:55:27,542 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/Problem05_label44+token_ring.04.cil-1.c[377340,377353] [2023-12-21 21:55:27,549 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/Problem05_label44+token_ring.04.cil-1.c[383339,383352] [2023-12-21 21:55:27,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:55:27,610 INFO L206 MainTranslator]: Completed translation [2023-12-21 21:55:27,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:27 WrapperNode [2023-12-21 21:55:27,611 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 21:55:27,612 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 21:55:27,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 21:55:27,612 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 21:55:27,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:27" (1/1) ... [2023-12-21 21:55:27,714 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:27" (1/1) ... [2023-12-21 21:55:27,937 INFO L138 Inliner]: procedures = 53, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12727 [2023-12-21 21:55:27,937 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 21:55:27,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 21:55:27,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 21:55:27,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 21:55:27,945 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:27" (1/1) ... [2023-12-21 21:55:27,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:27" (1/1) ... [2023-12-21 21:55:27,999 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:27" (1/1) ... [2023-12-21 21:55:28,195 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]. [2023-12-21 21:55:28,196 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:27" (1/1) ... [2023-12-21 21:55:28,196 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:27" (1/1) ... [2023-12-21 21:55:28,283 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:27" (1/1) ... [2023-12-21 21:55:28,394 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:27" (1/1) ... [2023-12-21 21:55:28,414 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:27" (1/1) ... [2023-12-21 21:55:28,432 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:27" (1/1) ... [2023-12-21 21:55:28,535 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 21:55:28,535 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 21:55:28,535 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 21:55:28,536 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 21:55:28,536 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:27" (1/1) ... [2023-12-21 21:55:28,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:55:28,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 21:55:28,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 21:55:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 21:55:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 21:55:28,645 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 21:55:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 21:55:28,646 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 21:55:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 21:55:28,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 21:55:28,649 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 21:55:28,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 21:55:28,649 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 21:55:28,649 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 21:55:28,649 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 21:55:28,649 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 21:55:28,649 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 21:55:28,649 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 21:55:28,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 21:55:28,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 21:55:28,785 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 21:55:28,788 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 21:55:35,725 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 21:55:35,816 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 21:55:35,816 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-21 21:55:35,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:55:35 BoogieIcfgContainer [2023-12-21 21:55:35,817 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 21:55:35,819 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 21:55:35,819 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 21:55:35,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 21:55:35,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:55:25" (1/3) ... [2023-12-21 21:55:35,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d31e098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:55:35, skipping insertion in model container [2023-12-21 21:55:35,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:27" (2/3) ... [2023-12-21 21:55:35,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d31e098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:55:35, skipping insertion in model container [2023-12-21 21:55:35,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:55:35" (3/3) ... [2023-12-21 21:55:35,823 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.04.cil-1.c [2023-12-21 21:55:35,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 21:55:35,837 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 21:55:35,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 21:55:35,904 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;@8c74a98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 21:55:35,904 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 21:55:35,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 2287 states, 2260 states have (on average 1.8836283185840708) internal successors, (4257), 2263 states have internal predecessors, (4257), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-21 21:55:35,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 21:55:35,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:35,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:35,927 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:35,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:35,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1377940007, now seen corresponding path program 1 times [2023-12-21 21:55:35,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:35,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061271035] [2023-12-21 21:55:35,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:35,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:35,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:35,956 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:55:35,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 21:55:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:36,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:55:36,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:36,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:36,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:36,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:36,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061271035] [2023-12-21 21:55:36,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061271035] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:36,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:36,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:55:36,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427235979] [2023-12-21 21:55:36,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:36,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:55:36,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:36,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:55:36,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:55:36,173 INFO L87 Difference]: Start difference. First operand has 2287 states, 2260 states have (on average 1.8836283185840708) internal successors, (4257), 2263 states have internal predecessors, (4257), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:36,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:36,304 INFO L93 Difference]: Finished difference Result 4570 states and 8577 transitions. [2023-12-21 21:55:36,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:55:36,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-21 21:55:36,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:36,325 INFO L225 Difference]: With dead ends: 4570 [2023-12-21 21:55:36,325 INFO L226 Difference]: Without dead ends: 2283 [2023-12-21 21:55:36,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:55:36,335 INFO L413 NwaCegarLoop]: 4191 mSDtfsCounter, 248 mSDsluCounter, 3959 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 8150 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:36,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 8150 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:55:36,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2023-12-21 21:55:36,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2283. [2023-12-21 21:55:36,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 2257 states have (on average 1.8489144882587505) internal successors, (4173), 2259 states have internal predecessors, (4173), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-21 21:55:36,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 4209 transitions. [2023-12-21 21:55:36,427 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 4209 transitions. Word has length 81 [2023-12-21 21:55:36,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:36,428 INFO L495 AbstractCegarLoop]: Abstraction has 2283 states and 4209 transitions. [2023-12-21 21:55:36,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:36,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 4209 transitions. [2023-12-21 21:55:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 21:55:36,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:36,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:36,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:36,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:36,634 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:36,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:36,635 INFO L85 PathProgramCache]: Analyzing trace with hash 490717161, now seen corresponding path program 1 times [2023-12-21 21:55:36,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:36,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673370456] [2023-12-21 21:55:36,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:36,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:36,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:36,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:55:36,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 21:55:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:36,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:36,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:36,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:36,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:36,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673370456] [2023-12-21 21:55:36,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673370456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:36,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:36,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:36,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967778982] [2023-12-21 21:55:36,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:36,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:36,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:36,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:36,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:36,804 INFO L87 Difference]: Start difference. First operand 2283 states and 4209 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:37,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:37,369 INFO L93 Difference]: Finished difference Result 2604 states and 4714 transitions. [2023-12-21 21:55:37,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:55:37,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-21 21:55:37,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:37,381 INFO L225 Difference]: With dead ends: 2604 [2023-12-21 21:55:37,382 INFO L226 Difference]: Without dead ends: 2452 [2023-12-21 21:55:37,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:37,385 INFO L413 NwaCegarLoop]: 4138 mSDtfsCounter, 4402 mSDsluCounter, 8356 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4414 SdHoareTripleChecker+Valid, 12494 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:37,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4414 Valid, 12494 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 21:55:37,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2023-12-21 21:55:37,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 2439. [2023-12-21 21:55:37,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2439 states, 2393 states have (on average 1.8340994567488509) internal successors, (4389), 2396 states have internal predecessors, (4389), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2023-12-21 21:55:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2439 states to 2439 states and 4452 transitions. [2023-12-21 21:55:37,441 INFO L78 Accepts]: Start accepts. Automaton has 2439 states and 4452 transitions. Word has length 81 [2023-12-21 21:55:37,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:37,441 INFO L495 AbstractCegarLoop]: Abstraction has 2439 states and 4452 transitions. [2023-12-21 21:55:37,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:37,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2439 states and 4452 transitions. [2023-12-21 21:55:37,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 21:55:37,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:37,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:37,460 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 [2023-12-21 21:55:37,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:37,650 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:37,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:37,654 INFO L85 PathProgramCache]: Analyzing trace with hash -927081943, now seen corresponding path program 1 times [2023-12-21 21:55:37,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:37,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121047709] [2023-12-21 21:55:37,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:37,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:37,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:37,658 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:55:37,662 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 (4)] Waiting until timeout for monitored process [2023-12-21 21:55:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:37,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:37,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:37,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:37,797 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:37,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121047709] [2023-12-21 21:55:37,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121047709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:37,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:37,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:37,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230145286] [2023-12-21 21:55:37,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:37,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:37,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:37,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:37,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:37,799 INFO L87 Difference]: Start difference. First operand 2439 states and 4452 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:38,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:38,052 INFO L93 Difference]: Finished difference Result 2747 states and 4937 transitions. [2023-12-21 21:55:38,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:55:38,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-21 21:55:38,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:38,061 INFO L225 Difference]: With dead ends: 2747 [2023-12-21 21:55:38,061 INFO L226 Difference]: Without dead ends: 2439 [2023-12-21 21:55:38,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:38,063 INFO L413 NwaCegarLoop]: 4110 mSDtfsCounter, 4275 mSDsluCounter, 8148 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4287 SdHoareTripleChecker+Valid, 12258 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:38,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4287 Valid, 12258 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:55:38,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2023-12-21 21:55:38,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2439. [2023-12-21 21:55:38,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2439 states, 2393 states have (on average 1.8311742582532387) internal successors, (4382), 2396 states have internal predecessors, (4382), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2023-12-21 21:55:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2439 states to 2439 states and 4445 transitions. [2023-12-21 21:55:38,108 INFO L78 Accepts]: Start accepts. Automaton has 2439 states and 4445 transitions. Word has length 81 [2023-12-21 21:55:38,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:38,109 INFO L495 AbstractCegarLoop]: Abstraction has 2439 states and 4445 transitions. [2023-12-21 21:55:38,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2439 states and 4445 transitions. [2023-12-21 21:55:38,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 21:55:38,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:38,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:38,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:38,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:38,314 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:38,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:38,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2081196055, now seen corresponding path program 1 times [2023-12-21 21:55:38,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:38,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953522966] [2023-12-21 21:55:38,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:38,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:38,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:38,322 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:55:38,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 21:55:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:38,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:38,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:38,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:38,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:38,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:38,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953522966] [2023-12-21 21:55:38,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953522966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:38,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:38,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:38,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303267407] [2023-12-21 21:55:38,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:38,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:38,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:38,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:38,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:38,432 INFO L87 Difference]: Start difference. First operand 2439 states and 4445 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:38,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:38,673 INFO L93 Difference]: Finished difference Result 2747 states and 4923 transitions. [2023-12-21 21:55:38,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:55:38,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-21 21:55:38,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:38,680 INFO L225 Difference]: With dead ends: 2747 [2023-12-21 21:55:38,680 INFO L226 Difference]: Without dead ends: 2439 [2023-12-21 21:55:38,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:38,682 INFO L413 NwaCegarLoop]: 4107 mSDtfsCounter, 4269 mSDsluCounter, 8144 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4281 SdHoareTripleChecker+Valid, 12251 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:38,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4281 Valid, 12251 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:55:38,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2023-12-21 21:55:38,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2439. [2023-12-21 21:55:38,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2439 states, 2393 states have (on average 1.8282490597576264) internal successors, (4375), 2396 states have internal predecessors, (4375), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2023-12-21 21:55:38,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2439 states to 2439 states and 4438 transitions. [2023-12-21 21:55:38,736 INFO L78 Accepts]: Start accepts. Automaton has 2439 states and 4438 transitions. Word has length 81 [2023-12-21 21:55:38,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:38,737 INFO L495 AbstractCegarLoop]: Abstraction has 2439 states and 4438 transitions. [2023-12-21 21:55:38,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:38,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2439 states and 4438 transitions. [2023-12-21 21:55:38,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 21:55:38,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:38,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:38,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:38,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:38,943 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:38,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:38,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1481803815, now seen corresponding path program 1 times [2023-12-21 21:55:38,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:38,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59656111] [2023-12-21 21:55:38,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:38,945 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:38,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:38,946 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:55:38,994 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 (6)] Waiting until timeout for monitored process [2023-12-21 21:55:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:39,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:39,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:39,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:39,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:39,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:39,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59656111] [2023-12-21 21:55:39,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59656111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:39,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:39,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:39,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879301328] [2023-12-21 21:55:39,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:39,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:39,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:39,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:39,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:39,115 INFO L87 Difference]: Start difference. First operand 2439 states and 4438 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:39,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:39,364 INFO L93 Difference]: Finished difference Result 2747 states and 4909 transitions. [2023-12-21 21:55:39,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:55:39,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-21 21:55:39,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:39,372 INFO L225 Difference]: With dead ends: 2747 [2023-12-21 21:55:39,372 INFO L226 Difference]: Without dead ends: 2439 [2023-12-21 21:55:39,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:39,373 INFO L413 NwaCegarLoop]: 4104 mSDtfsCounter, 4263 mSDsluCounter, 8140 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4275 SdHoareTripleChecker+Valid, 12244 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:39,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4275 Valid, 12244 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:55:39,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2023-12-21 21:55:39,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2439. [2023-12-21 21:55:39,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2439 states, 2393 states have (on average 1.8253238612620142) internal successors, (4368), 2396 states have internal predecessors, (4368), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2023-12-21 21:55:39,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2439 states to 2439 states and 4431 transitions. [2023-12-21 21:55:39,415 INFO L78 Accepts]: Start accepts. Automaton has 2439 states and 4431 transitions. Word has length 81 [2023-12-21 21:55:39,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:39,416 INFO L495 AbstractCegarLoop]: Abstraction has 2439 states and 4431 transitions. [2023-12-21 21:55:39,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:39,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2439 states and 4431 transitions. [2023-12-21 21:55:39,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 21:55:39,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:39,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:39,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:39,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:39,620 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:39,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:39,621 INFO L85 PathProgramCache]: Analyzing trace with hash -338389529, now seen corresponding path program 1 times [2023-12-21 21:55:39,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:39,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098998677] [2023-12-21 21:55:39,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:39,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:39,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:39,622 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:55:39,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 21:55:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:39,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:39,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:39,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:39,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:39,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:39,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098998677] [2023-12-21 21:55:39,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098998677] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:39,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:39,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:39,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313191045] [2023-12-21 21:55:39,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:39,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:39,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:39,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:39,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:39,747 INFO L87 Difference]: Start difference. First operand 2439 states and 4431 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:40,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:40,036 INFO L93 Difference]: Finished difference Result 2817 states and 5007 transitions. [2023-12-21 21:55:40,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:55:40,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-21 21:55:40,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:40,045 INFO L225 Difference]: With dead ends: 2817 [2023-12-21 21:55:40,045 INFO L226 Difference]: Without dead ends: 2509 [2023-12-21 21:55:40,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:40,047 INFO L413 NwaCegarLoop]: 4102 mSDtfsCounter, 4298 mSDsluCounter, 8136 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4310 SdHoareTripleChecker+Valid, 12238 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:40,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4310 Valid, 12238 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:55:40,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2023-12-21 21:55:40,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2509. [2023-12-21 21:55:40,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 2457 states have (on average 1.8123728123728124) internal successors, (4453), 2460 states have internal predecessors, (4453), 33 states have call successors, (33), 16 states have call predecessors, (33), 17 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-12-21 21:55:40,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 4520 transitions. [2023-12-21 21:55:40,092 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 4520 transitions. Word has length 81 [2023-12-21 21:55:40,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:40,093 INFO L495 AbstractCegarLoop]: Abstraction has 2509 states and 4520 transitions. [2023-12-21 21:55:40,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:40,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 4520 transitions. [2023-12-21 21:55:40,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 21:55:40,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:40,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:40,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-21 21:55:40,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:40,297 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:40,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:40,298 INFO L85 PathProgramCache]: Analyzing trace with hash -434130170, now seen corresponding path program 1 times [2023-12-21 21:55:40,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:40,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290772548] [2023-12-21 21:55:40,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:40,298 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:40,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:40,299 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:55:40,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 21:55:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:40,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:40,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:40,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:40,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:40,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:40,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290772548] [2023-12-21 21:55:40,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290772548] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:40,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:40,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:40,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758400401] [2023-12-21 21:55:40,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:40,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:40,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:40,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:40,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:40,531 INFO L87 Difference]: Start difference. First operand 2509 states and 4520 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:40,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:40,851 INFO L93 Difference]: Finished difference Result 2957 states and 5185 transitions. [2023-12-21 21:55:40,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:55:40,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-21 21:55:40,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:40,859 INFO L225 Difference]: With dead ends: 2957 [2023-12-21 21:55:40,859 INFO L226 Difference]: Without dead ends: 2579 [2023-12-21 21:55:40,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:40,861 INFO L413 NwaCegarLoop]: 4099 mSDtfsCounter, 4291 mSDsluCounter, 8132 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4303 SdHoareTripleChecker+Valid, 12231 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:40,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4303 Valid, 12231 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:55:40,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2023-12-21 21:55:40,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2579. [2023-12-21 21:55:40,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2579 states, 2521 states have (on average 1.7984926616422054) internal successors, (4534), 2524 states have internal predecessors, (4534), 35 states have call successors, (35), 20 states have call predecessors, (35), 21 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2023-12-21 21:55:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 4605 transitions. [2023-12-21 21:55:40,919 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 4605 transitions. Word has length 81 [2023-12-21 21:55:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:40,919 INFO L495 AbstractCegarLoop]: Abstraction has 2579 states and 4605 transitions. [2023-12-21 21:55:40,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 4605 transitions. [2023-12-21 21:55:40,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 21:55:40,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:40,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:40,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:41,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:41,125 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:41,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:41,125 INFO L85 PathProgramCache]: Analyzing trace with hash 667843910, now seen corresponding path program 1 times [2023-12-21 21:55:41,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:41,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797580767] [2023-12-21 21:55:41,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:41,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:41,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:41,127 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:55:41,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 21:55:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:41,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:41,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:41,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:41,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:41,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797580767] [2023-12-21 21:55:41,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797580767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:41,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:41,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:41,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600007343] [2023-12-21 21:55:41,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:41,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:41,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:41,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:41,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:41,245 INFO L87 Difference]: Start difference. First operand 2579 states and 4605 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:41,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:41,548 INFO L93 Difference]: Finished difference Result 3097 states and 5355 transitions. [2023-12-21 21:55:41,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:55:41,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-21 21:55:41,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:41,555 INFO L225 Difference]: With dead ends: 3097 [2023-12-21 21:55:41,555 INFO L226 Difference]: Without dead ends: 2649 [2023-12-21 21:55:41,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:41,558 INFO L413 NwaCegarLoop]: 4096 mSDtfsCounter, 4285 mSDsluCounter, 8128 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4297 SdHoareTripleChecker+Valid, 12224 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:41,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4297 Valid, 12224 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:55:41,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2023-12-21 21:55:41,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2649. [2023-12-21 21:55:41,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2649 states, 2585 states have (on average 1.783752417794971) internal successors, (4611), 2588 states have internal predecessors, (4611), 37 states have call successors, (37), 24 states have call predecessors, (37), 25 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2023-12-21 21:55:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 4686 transitions. [2023-12-21 21:55:41,619 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 4686 transitions. Word has length 81 [2023-12-21 21:55:41,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:41,620 INFO L495 AbstractCegarLoop]: Abstraction has 2649 states and 4686 transitions. [2023-12-21 21:55:41,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:41,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 4686 transitions. [2023-12-21 21:55:41,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 21:55:41,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:41,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:41,630 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 [2023-12-21 21:55:41,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:41,831 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:41,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:41,831 INFO L85 PathProgramCache]: Analyzing trace with hash 536667429, now seen corresponding path program 1 times [2023-12-21 21:55:41,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:41,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831653814] [2023-12-21 21:55:41,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:41,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:41,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:41,857 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:55:41,860 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 (10)] Waiting until timeout for monitored process [2023-12-21 21:55:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:41,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:41,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:41,971 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:41,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:41,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831653814] [2023-12-21 21:55:41,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831653814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:41,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:41,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:41,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196707101] [2023-12-21 21:55:41,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:41,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:41,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:41,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:41,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:41,973 INFO L87 Difference]: Start difference. First operand 2649 states and 4686 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:42,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:42,305 INFO L93 Difference]: Finished difference Result 3237 states and 5517 transitions. [2023-12-21 21:55:42,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:55:42,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-21 21:55:42,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:42,313 INFO L225 Difference]: With dead ends: 3237 [2023-12-21 21:55:42,313 INFO L226 Difference]: Without dead ends: 2719 [2023-12-21 21:55:42,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:42,315 INFO L413 NwaCegarLoop]: 4093 mSDtfsCounter, 4278 mSDsluCounter, 8124 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4290 SdHoareTripleChecker+Valid, 12217 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:42,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4290 Valid, 12217 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:55:42,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states. [2023-12-21 21:55:42,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 2719. [2023-12-21 21:55:42,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2649 states have (on average 1.7682144205360513) internal successors, (4684), 2652 states have internal predecessors, (4684), 39 states have call successors, (39), 28 states have call predecessors, (39), 29 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-12-21 21:55:42,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 4763 transitions. [2023-12-21 21:55:42,377 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 4763 transitions. Word has length 81 [2023-12-21 21:55:42,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:42,378 INFO L495 AbstractCegarLoop]: Abstraction has 2719 states and 4763 transitions. [2023-12-21 21:55:42,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:42,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 4763 transitions. [2023-12-21 21:55:42,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 21:55:42,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:42,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:42,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:42,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:42,583 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:42,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:42,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1907380762, now seen corresponding path program 1 times [2023-12-21 21:55:42,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:42,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191938774] [2023-12-21 21:55:42,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:42,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:42,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:42,585 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:55:42,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 21:55:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:42,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:42,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:42,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:42,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:42,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191938774] [2023-12-21 21:55:42,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191938774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:42,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:42,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:42,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824049804] [2023-12-21 21:55:42,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:42,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:42,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:42,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:42,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:42,695 INFO L87 Difference]: Start difference. First operand 2719 states and 4763 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:42,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:42,997 INFO L93 Difference]: Finished difference Result 3371 states and 5663 transitions. [2023-12-21 21:55:42,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:55:42,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-21 21:55:42,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:43,005 INFO L225 Difference]: With dead ends: 3371 [2023-12-21 21:55:43,006 INFO L226 Difference]: Without dead ends: 2783 [2023-12-21 21:55:43,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:43,008 INFO L413 NwaCegarLoop]: 4090 mSDtfsCounter, 4271 mSDsluCounter, 8120 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4283 SdHoareTripleChecker+Valid, 12210 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:43,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4283 Valid, 12210 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:55:43,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2023-12-21 21:55:43,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2783. [2023-12-21 21:55:43,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2711 states have (on average 1.752489856141645) internal successors, (4751), 2714 states have internal predecessors, (4751), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-12-21 21:55:43,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 4830 transitions. [2023-12-21 21:55:43,089 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 4830 transitions. Word has length 81 [2023-12-21 21:55:43,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:43,089 INFO L495 AbstractCegarLoop]: Abstraction has 2783 states and 4830 transitions. [2023-12-21 21:55:43,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:43,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 4830 transitions. [2023-12-21 21:55:43,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 21:55:43,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:43,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:43,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:43,295 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 [2023-12-21 21:55:43,296 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:43,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:43,296 INFO L85 PathProgramCache]: Analyzing trace with hash 954141606, now seen corresponding path program 1 times [2023-12-21 21:55:43,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:43,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874693500] [2023-12-21 21:55:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:43,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:43,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:43,300 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) [2023-12-21 21:55:43,313 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 [2023-12-21 21:55:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:43,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:43,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:43,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:43,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:43,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:43,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874693500] [2023-12-21 21:55:43,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874693500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:43,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:43,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:43,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967984342] [2023-12-21 21:55:43,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:43,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:55:43,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:43,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:55:43,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:43,387 INFO L87 Difference]: Start difference. First operand 2783 states and 4830 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:43,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:43,499 INFO L93 Difference]: Finished difference Result 3490 states and 5782 transitions. [2023-12-21 21:55:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:55:43,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-21 21:55:43,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:43,505 INFO L225 Difference]: With dead ends: 3490 [2023-12-21 21:55:43,506 INFO L226 Difference]: Without dead ends: 2839 [2023-12-21 21:55:43,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:43,508 INFO L413 NwaCegarLoop]: 4164 mSDtfsCounter, 38 mSDsluCounter, 8319 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 12483 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:43,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 12483 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:55:43,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2023-12-21 21:55:43,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 2787. [2023-12-21 21:55:43,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2715 states have (on average 1.7476979742173113) internal successors, (4745), 2718 states have internal predecessors, (4745), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-12-21 21:55:43,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4824 transitions. [2023-12-21 21:55:43,576 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4824 transitions. Word has length 81 [2023-12-21 21:55:43,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:43,576 INFO L495 AbstractCegarLoop]: Abstraction has 2787 states and 4824 transitions. [2023-12-21 21:55:43,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:43,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4824 transitions. [2023-12-21 21:55:43,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 21:55:43,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:43,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:43,594 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 [2023-12-21 21:55:43,781 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 [2023-12-21 21:55:43,781 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:43,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:43,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1074444504, now seen corresponding path program 1 times [2023-12-21 21:55:43,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:43,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847417203] [2023-12-21 21:55:43,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:43,782 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:43,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:43,783 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) [2023-12-21 21:55:43,785 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 [2023-12-21 21:55:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:43,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:43,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:43,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:43,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:43,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:43,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847417203] [2023-12-21 21:55:43,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847417203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:43,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:43,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:43,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668016959] [2023-12-21 21:55:43,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:43,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:55:43,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:43,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:55:43,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:43,876 INFO L87 Difference]: Start difference. First operand 2787 states and 4824 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:44,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:44,048 INFO L93 Difference]: Finished difference Result 3486 states and 5754 transitions. [2023-12-21 21:55:44,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:55:44,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-21 21:55:44,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:44,054 INFO L225 Difference]: With dead ends: 3486 [2023-12-21 21:55:44,054 INFO L226 Difference]: Without dead ends: 2831 [2023-12-21 21:55:44,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:44,056 INFO L413 NwaCegarLoop]: 4164 mSDtfsCounter, 29 mSDsluCounter, 8320 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 12484 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:44,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 12484 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:55:44,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2023-12-21 21:55:44,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2791. [2023-12-21 21:55:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2719 states have (on average 1.742920191246782) internal successors, (4739), 2722 states have internal predecessors, (4739), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-12-21 21:55:44,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 4818 transitions. [2023-12-21 21:55:44,108 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 4818 transitions. Word has length 81 [2023-12-21 21:55:44,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:44,109 INFO L495 AbstractCegarLoop]: Abstraction has 2791 states and 4818 transitions. [2023-12-21 21:55:44,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:44,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 4818 transitions. [2023-12-21 21:55:44,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 21:55:44,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:44,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:44,121 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 (13)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:44,313 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 [2023-12-21 21:55:44,313 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:44,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:44,314 INFO L85 PathProgramCache]: Analyzing trace with hash 853828198, now seen corresponding path program 1 times [2023-12-21 21:55:44,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:44,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215573535] [2023-12-21 21:55:44,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:44,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:44,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:44,323 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) [2023-12-21 21:55:44,324 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 (14)] Waiting until timeout for monitored process [2023-12-21 21:55:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:44,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:44,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:44,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:44,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:44,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215573535] [2023-12-21 21:55:44,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215573535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:44,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:44,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:44,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610066237] [2023-12-21 21:55:44,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:44,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:55:44,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:44,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:55:44,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:44,399 INFO L87 Difference]: Start difference. First operand 2791 states and 4818 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:44,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:44,478 INFO L93 Difference]: Finished difference Result 3482 states and 5726 transitions. [2023-12-21 21:55:44,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:55:44,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-21 21:55:44,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:44,484 INFO L225 Difference]: With dead ends: 3482 [2023-12-21 21:55:44,484 INFO L226 Difference]: Without dead ends: 2823 [2023-12-21 21:55:44,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:44,486 INFO L413 NwaCegarLoop]: 4164 mSDtfsCounter, 20 mSDsluCounter, 8321 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 12485 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:44,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 12485 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:55:44,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2023-12-21 21:55:44,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2795. [2023-12-21 21:55:44,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2795 states, 2723 states have (on average 1.738156445097319) internal successors, (4733), 2726 states have internal predecessors, (4733), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-12-21 21:55:44,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 4812 transitions. [2023-12-21 21:55:44,536 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 4812 transitions. Word has length 81 [2023-12-21 21:55:44,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:44,536 INFO L495 AbstractCegarLoop]: Abstraction has 2795 states and 4812 transitions. [2023-12-21 21:55:44,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:44,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 4812 transitions. [2023-12-21 21:55:44,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 21:55:44,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:44,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:44,550 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 (14)] Ended with exit code 0 [2023-12-21 21:55:44,740 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 [2023-12-21 21:55:44,741 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:44,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:44,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1277474920, now seen corresponding path program 1 times [2023-12-21 21:55:44,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:44,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38618557] [2023-12-21 21:55:44,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:44,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:44,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:44,757 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) [2023-12-21 21:55:44,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 21:55:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:44,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:44,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:44,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:44,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:44,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38618557] [2023-12-21 21:55:44,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38618557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:44,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:44,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:44,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116401486] [2023-12-21 21:55:44,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:44,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:55:44,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:44,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:55:44,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:44,854 INFO L87 Difference]: Start difference. First operand 2795 states and 4812 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:44,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:44,931 INFO L93 Difference]: Finished difference Result 3478 states and 5698 transitions. [2023-12-21 21:55:44,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:55:44,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-21 21:55:44,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:44,935 INFO L225 Difference]: With dead ends: 3478 [2023-12-21 21:55:44,936 INFO L226 Difference]: Without dead ends: 2815 [2023-12-21 21:55:44,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:44,937 INFO L413 NwaCegarLoop]: 4164 mSDtfsCounter, 11 mSDsluCounter, 8322 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 12486 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:44,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 12486 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:55:44,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2023-12-21 21:55:44,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2799. [2023-12-21 21:55:44,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 2727 states have (on average 1.7334066740007334) internal successors, (4727), 2730 states have internal predecessors, (4727), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-12-21 21:55:44,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 4806 transitions. [2023-12-21 21:55:44,985 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 4806 transitions. Word has length 81 [2023-12-21 21:55:44,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:44,986 INFO L495 AbstractCegarLoop]: Abstraction has 2799 states and 4806 transitions. [2023-12-21 21:55:44,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:44,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 4806 transitions. [2023-12-21 21:55:44,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 21:55:44,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:44,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:44,991 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 (15)] Ended with exit code 0 [2023-12-21 21:55:45,191 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 [2023-12-21 21:55:45,191 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:45,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:45,191 INFO L85 PathProgramCache]: Analyzing trace with hash 883108134, now seen corresponding path program 1 times [2023-12-21 21:55:45,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:45,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570366687] [2023-12-21 21:55:45,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:45,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:45,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:45,199 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) [2023-12-21 21:55:45,201 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 [2023-12-21 21:55:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:45,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:55:45,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:45,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:45,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:45,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:45,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570366687] [2023-12-21 21:55:45,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570366687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:45,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:45,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:45,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959102571] [2023-12-21 21:55:45,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:45,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:45,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:45,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:45,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:45,357 INFO L87 Difference]: Start difference. First operand 2799 states and 4806 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:45,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:45,579 INFO L93 Difference]: Finished difference Result 3467 states and 5645 transitions. [2023-12-21 21:55:45,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:55:45,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-21 21:55:45,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:45,584 INFO L225 Difference]: With dead ends: 3467 [2023-12-21 21:55:45,584 INFO L226 Difference]: Without dead ends: 2799 [2023-12-21 21:55:45,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:45,586 INFO L413 NwaCegarLoop]: 4086 mSDtfsCounter, 4194 mSDsluCounter, 8116 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4205 SdHoareTripleChecker+Valid, 12202 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:45,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4205 Valid, 12202 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:55:45,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2023-12-21 21:55:45,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2799. [2023-12-21 21:55:45,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 2727 states have (on average 1.7308397506417308) internal successors, (4720), 2730 states have internal predecessors, (4720), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-12-21 21:55:45,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 4799 transitions. [2023-12-21 21:55:45,632 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 4799 transitions. Word has length 81 [2023-12-21 21:55:45,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:45,633 INFO L495 AbstractCegarLoop]: Abstraction has 2799 states and 4799 transitions. [2023-12-21 21:55:45,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:45,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 4799 transitions. [2023-12-21 21:55:45,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 21:55:45,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:45,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:45,637 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 [2023-12-21 21:55:45,837 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 [2023-12-21 21:55:45,837 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:45,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:45,837 INFO L85 PathProgramCache]: Analyzing trace with hash -922330200, now seen corresponding path program 1 times [2023-12-21 21:55:45,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:45,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213391741] [2023-12-21 21:55:45,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:45,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:45,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:45,839 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) [2023-12-21 21:55:45,868 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 [2023-12-21 21:55:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:45,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:55:45,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:46,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:46,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:46,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213391741] [2023-12-21 21:55:46,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213391741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:46,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:46,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:55:46,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109737903] [2023-12-21 21:55:46,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:46,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:55:46,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:46,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:55:46,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:55:46,015 INFO L87 Difference]: Start difference. First operand 2799 states and 4799 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 21:55:46,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:46,113 INFO L93 Difference]: Finished difference Result 4108 states and 6436 transitions. [2023-12-21 21:55:46,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:55:46,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 81 [2023-12-21 21:55:46,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:46,120 INFO L225 Difference]: With dead ends: 4108 [2023-12-21 21:55:46,120 INFO L226 Difference]: Without dead ends: 3441 [2023-12-21 21:55:46,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:55:46,123 INFO L413 NwaCegarLoop]: 4196 mSDtfsCounter, 4093 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4093 SdHoareTripleChecker+Valid, 4375 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:46,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4093 Valid, 4375 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:55:46,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3441 states. [2023-12-21 21:55:46,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3441 to 3439. [2023-12-21 21:55:46,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3439 states, 3301 states have (on average 1.6428355043926084) internal successors, (5423), 3307 states have internal predecessors, (5423), 74 states have call successors, (74), 60 states have call predecessors, (74), 62 states have return successors, (76), 72 states have call predecessors, (76), 74 states have call successors, (76) [2023-12-21 21:55:46,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3439 states to 3439 states and 5573 transitions. [2023-12-21 21:55:46,188 INFO L78 Accepts]: Start accepts. Automaton has 3439 states and 5573 transitions. Word has length 81 [2023-12-21 21:55:46,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:46,189 INFO L495 AbstractCegarLoop]: Abstraction has 3439 states and 5573 transitions. [2023-12-21 21:55:46,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 21:55:46,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3439 states and 5573 transitions. [2023-12-21 21:55:46,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:55:46,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:46,191 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:46,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-21 21:55:46,394 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 [2023-12-21 21:55:46,394 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:46,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:46,395 INFO L85 PathProgramCache]: Analyzing trace with hash -497178965, now seen corresponding path program 1 times [2023-12-21 21:55:46,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:46,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70917771] [2023-12-21 21:55:46,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:46,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:46,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:46,396 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) [2023-12-21 21:55:46,426 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 [2023-12-21 21:55:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:46,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:55:46,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:46,591 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 21:55:46,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:46,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:46,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70917771] [2023-12-21 21:55:46,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70917771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:46,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:46,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:46,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110087362] [2023-12-21 21:55:46,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:46,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:55:46,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:46,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:55:46,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:46,593 INFO L87 Difference]: Start difference. First operand 3439 states and 5573 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:55:46,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:46,880 INFO L93 Difference]: Finished difference Result 5953 states and 8651 transitions. [2023-12-21 21:55:46,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:55:46,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 131 [2023-12-21 21:55:46,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:46,888 INFO L225 Difference]: With dead ends: 5953 [2023-12-21 21:55:46,888 INFO L226 Difference]: Without dead ends: 4647 [2023-12-21 21:55:46,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:46,890 INFO L413 NwaCegarLoop]: 4145 mSDtfsCounter, 4225 mSDsluCounter, 4216 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4230 SdHoareTripleChecker+Valid, 8361 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:46,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4230 Valid, 8361 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:55:46,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4647 states. [2023-12-21 21:55:47,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4647 to 4645. [2023-12-21 21:55:47,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4645 states, 4383 states have (on average 1.5375313712069358) internal successors, (6739), 4397 states have internal predecessors, (6739), 136 states have call successors, (136), 112 states have call predecessors, (136), 124 states have return successors, (160), 136 states have call predecessors, (160), 136 states have call successors, (160) [2023-12-21 21:55:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4645 states to 4645 states and 7035 transitions. [2023-12-21 21:55:47,073 INFO L78 Accepts]: Start accepts. Automaton has 4645 states and 7035 transitions. Word has length 131 [2023-12-21 21:55:47,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:47,073 INFO L495 AbstractCegarLoop]: Abstraction has 4645 states and 7035 transitions. [2023-12-21 21:55:47,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:55:47,074 INFO L276 IsEmpty]: Start isEmpty. Operand 4645 states and 7035 transitions. [2023-12-21 21:55:47,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-21 21:55:47,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:47,076 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:47,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:47,280 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 [2023-12-21 21:55:47,281 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:47,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:47,281 INFO L85 PathProgramCache]: Analyzing trace with hash 292126512, now seen corresponding path program 1 times [2023-12-21 21:55:47,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:47,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274473222] [2023-12-21 21:55:47,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:47,282 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:47,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:47,283 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) [2023-12-21 21:55:47,284 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 [2023-12-21 21:55:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:47,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:55:47,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:47,478 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 21:55:47,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:47,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:47,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274473222] [2023-12-21 21:55:47,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274473222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:47,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:47,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:47,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627440321] [2023-12-21 21:55:47,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:47,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:55:47,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:47,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:55:47,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:47,480 INFO L87 Difference]: Start difference. First operand 4645 states and 7035 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:55:47,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:47,843 INFO L93 Difference]: Finished difference Result 9383 states and 12812 transitions. [2023-12-21 21:55:47,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:55:47,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 133 [2023-12-21 21:55:47,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:47,887 INFO L225 Difference]: With dead ends: 9383 [2023-12-21 21:55:47,887 INFO L226 Difference]: Without dead ends: 6871 [2023-12-21 21:55:47,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:47,893 INFO L413 NwaCegarLoop]: 4177 mSDtfsCounter, 4215 mSDsluCounter, 4244 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4220 SdHoareTripleChecker+Valid, 8421 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:47,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4220 Valid, 8421 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:55:47,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6871 states. [2023-12-21 21:55:48,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6871 to 6869. [2023-12-21 21:55:48,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6869 states, 6372 states have (on average 1.436283741368487) internal successors, (9152), 6403 states have internal predecessors, (9152), 255 states have call successors, (255), 208 states have call predecessors, (255), 240 states have return successors, (323), 259 states have call predecessors, (323), 255 states have call successors, (323) [2023-12-21 21:55:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6869 states to 6869 states and 9730 transitions. [2023-12-21 21:55:48,171 INFO L78 Accepts]: Start accepts. Automaton has 6869 states and 9730 transitions. Word has length 133 [2023-12-21 21:55:48,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:48,171 INFO L495 AbstractCegarLoop]: Abstraction has 6869 states and 9730 transitions. [2023-12-21 21:55:48,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:55:48,171 INFO L276 IsEmpty]: Start isEmpty. Operand 6869 states and 9730 transitions. [2023-12-21 21:55:48,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-21 21:55:48,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:48,174 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:48,180 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 [2023-12-21 21:55:48,378 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 [2023-12-21 21:55:48,378 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:48,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:48,379 INFO L85 PathProgramCache]: Analyzing trace with hash -414470094, now seen corresponding path program 1 times [2023-12-21 21:55:48,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:48,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576567579] [2023-12-21 21:55:48,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:48,379 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:48,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:48,380 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) [2023-12-21 21:55:48,396 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 [2023-12-21 21:55:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:48,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:55:48,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:48,471 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 21:55:48,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:48,471 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:48,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576567579] [2023-12-21 21:55:48,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576567579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:48,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:48,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:55:48,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97384487] [2023-12-21 21:55:48,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:48,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:55:48,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:48,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:55:48,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:55:48,473 INFO L87 Difference]: Start difference. First operand 6869 states and 9730 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:55:48,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:48,753 INFO L93 Difference]: Finished difference Result 11599 states and 15471 transitions. [2023-12-21 21:55:48,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:55:48,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 133 [2023-12-21 21:55:48,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:48,765 INFO L225 Difference]: With dead ends: 11599 [2023-12-21 21:55:48,765 INFO L226 Difference]: Without dead ends: 6863 [2023-12-21 21:55:48,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:55:48,770 INFO L413 NwaCegarLoop]: 4160 mSDtfsCounter, 216 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 8117 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:48,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 8117 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:55:48,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6863 states. [2023-12-21 21:55:48,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6863 to 6863. [2023-12-21 21:55:48,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6863 states, 6369 states have (on average 1.4360182132202857) internal successors, (9146), 6399 states have internal predecessors, (9146), 252 states have call successors, (252), 208 states have call predecessors, (252), 240 states have return successors, (320), 256 states have call predecessors, (320), 252 states have call successors, (320) [2023-12-21 21:55:48,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6863 states to 6863 states and 9718 transitions. [2023-12-21 21:55:48,986 INFO L78 Accepts]: Start accepts. Automaton has 6863 states and 9718 transitions. Word has length 133 [2023-12-21 21:55:48,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:48,986 INFO L495 AbstractCegarLoop]: Abstraction has 6863 states and 9718 transitions. [2023-12-21 21:55:48,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:55:48,986 INFO L276 IsEmpty]: Start isEmpty. Operand 6863 states and 9718 transitions. [2023-12-21 21:55:48,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 21:55:48,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:48,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:49,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:49,194 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 [2023-12-21 21:55:49,195 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:49,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:49,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1038449643, now seen corresponding path program 1 times [2023-12-21 21:55:49,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:49,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429976690] [2023-12-21 21:55:49,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:49,196 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:49,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:49,213 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) [2023-12-21 21:55:49,283 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 [2023-12-21 21:55:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:49,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:55:49,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 21:55:49,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:49,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:49,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429976690] [2023-12-21 21:55:49,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429976690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:49,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:49,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:49,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126010286] [2023-12-21 21:55:49,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:49,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:55:49,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:49,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:55:49,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:49,485 INFO L87 Difference]: Start difference. First operand 6863 states and 9718 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:55:49,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:49,988 INFO L93 Difference]: Finished difference Result 15740 states and 20505 transitions. [2023-12-21 21:55:49,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:55:49,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 135 [2023-12-21 21:55:49,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:50,032 INFO L225 Difference]: With dead ends: 15740 [2023-12-21 21:55:50,032 INFO L226 Difference]: Without dead ends: 11010 [2023-12-21 21:55:50,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:50,043 INFO L413 NwaCegarLoop]: 4163 mSDtfsCounter, 4208 mSDsluCounter, 4226 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4214 SdHoareTripleChecker+Valid, 8389 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:50,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4214 Valid, 8389 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:55:50,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11010 states. [2023-12-21 21:55:50,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11010 to 11008. [2023-12-21 21:55:50,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11008 states, 10071 states have (on average 1.3528944494091948) internal successors, (13625), 10138 states have internal predecessors, (13625), 471 states have call successors, (471), 384 states have call predecessors, (471), 464 states have return successors, (635), 487 states have call predecessors, (635), 471 states have call successors, (635) [2023-12-21 21:55:50,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11008 states to 11008 states and 14731 transitions. [2023-12-21 21:55:50,616 INFO L78 Accepts]: Start accepts. Automaton has 11008 states and 14731 transitions. Word has length 135 [2023-12-21 21:55:50,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:50,616 INFO L495 AbstractCegarLoop]: Abstraction has 11008 states and 14731 transitions. [2023-12-21 21:55:50,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:55:50,617 INFO L276 IsEmpty]: Start isEmpty. Operand 11008 states and 14731 transitions. [2023-12-21 21:55:50,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 21:55:50,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:50,621 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:50,636 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 [2023-12-21 21:55:50,825 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 [2023-12-21 21:55:50,825 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:50,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:50,826 INFO L85 PathProgramCache]: Analyzing trace with hash 608791337, now seen corresponding path program 1 times [2023-12-21 21:55:50,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:50,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081933798] [2023-12-21 21:55:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:50,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:50,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:50,841 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) [2023-12-21 21:55:50,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-21 21:55:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:50,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:55:50,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 21:55:50,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:50,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:50,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081933798] [2023-12-21 21:55:50,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081933798] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:50,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:50,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:55:50,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653465361] [2023-12-21 21:55:50,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:50,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:55:50,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:50,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:55:50,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:55:50,998 INFO L87 Difference]: Start difference. First operand 11008 states and 14731 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:55:51,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:51,517 INFO L93 Difference]: Finished difference Result 19878 states and 25476 transitions. [2023-12-21 21:55:51,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:55:51,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 135 [2023-12-21 21:55:51,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:51,533 INFO L225 Difference]: With dead ends: 19878 [2023-12-21 21:55:51,534 INFO L226 Difference]: Without dead ends: 11003 [2023-12-21 21:55:51,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:55:51,543 INFO L413 NwaCegarLoop]: 4159 mSDtfsCounter, 214 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 8116 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:51,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 8116 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:55:51,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11003 states. [2023-12-21 21:55:51,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11003 to 11003. [2023-12-21 21:55:51,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11003 states, 10069 states have (on average 1.352765915185222) internal successors, (13621), 10135 states have internal predecessors, (13621), 468 states have call successors, (468), 384 states have call predecessors, (468), 464 states have return successors, (632), 484 states have call predecessors, (632), 468 states have call successors, (632) [2023-12-21 21:55:51,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11003 states to 11003 states and 14721 transitions. [2023-12-21 21:55:51,912 INFO L78 Accepts]: Start accepts. Automaton has 11003 states and 14721 transitions. Word has length 135 [2023-12-21 21:55:51,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:51,912 INFO L495 AbstractCegarLoop]: Abstraction has 11003 states and 14721 transitions. [2023-12-21 21:55:51,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:55:51,912 INFO L276 IsEmpty]: Start isEmpty. Operand 11003 states and 14721 transitions. [2023-12-21 21:55:51,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 21:55:51,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:51,917 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:51,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:52,121 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 [2023-12-21 21:55:52,122 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:52,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:52,122 INFO L85 PathProgramCache]: Analyzing trace with hash -588644944, now seen corresponding path program 1 times [2023-12-21 21:55:52,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:52,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008049593] [2023-12-21 21:55:52,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:52,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:52,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:52,137 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) [2023-12-21 21:55:52,175 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 [2023-12-21 21:55:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:52,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:55:52,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:52,358 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 21:55:52,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:52,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:52,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008049593] [2023-12-21 21:55:52,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008049593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:52,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:52,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:52,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719779853] [2023-12-21 21:55:52,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:52,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:55:52,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:52,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:55:52,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:52,360 INFO L87 Difference]: Start difference. First operand 11003 states and 14721 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:55:53,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:53,198 INFO L93 Difference]: Finished difference Result 28091 states and 35299 transitions. [2023-12-21 21:55:53,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:55:53,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 137 [2023-12-21 21:55:53,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:53,230 INFO L225 Difference]: With dead ends: 28091 [2023-12-21 21:55:53,230 INFO L226 Difference]: Without dead ends: 19221 [2023-12-21 21:55:53,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:53,244 INFO L413 NwaCegarLoop]: 4153 mSDtfsCounter, 4207 mSDsluCounter, 4208 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4213 SdHoareTripleChecker+Valid, 8361 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:53,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4213 Valid, 8361 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:55:53,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19221 states. [2023-12-21 21:55:53,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19221 to 19027. [2023-12-21 21:55:53,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19027 states, 17034 states have (on average 1.2890689209815662) internal successors, (21958), 17309 states have internal predecessors, (21958), 871 states have call successors, (871), 704 states have call predecessors, (871), 1120 states have return successors, (1484), 1015 states have call predecessors, (1484), 871 states have call successors, (1484) [2023-12-21 21:55:54,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19027 states to 19027 states and 24313 transitions. [2023-12-21 21:55:54,019 INFO L78 Accepts]: Start accepts. Automaton has 19027 states and 24313 transitions. Word has length 137 [2023-12-21 21:55:54,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:54,019 INFO L495 AbstractCegarLoop]: Abstraction has 19027 states and 24313 transitions. [2023-12-21 21:55:54,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:55:54,020 INFO L276 IsEmpty]: Start isEmpty. Operand 19027 states and 24313 transitions. [2023-12-21 21:55:54,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 21:55:54,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:54,031 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:54,045 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 [2023-12-21 21:55:54,235 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 [2023-12-21 21:55:54,235 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:54,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:54,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1023150542, now seen corresponding path program 1 times [2023-12-21 21:55:54,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:54,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472501653] [2023-12-21 21:55:54,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:54,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:54,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:54,237 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) [2023-12-21 21:55:54,239 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 [2023-12-21 21:55:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:54,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:55:54,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:54,331 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 21:55:54,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:54,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:54,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472501653] [2023-12-21 21:55:54,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472501653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:54,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:54,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:55:54,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479687581] [2023-12-21 21:55:54,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:54,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:55:54,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:54,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:55:54,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:55:54,333 INFO L87 Difference]: Start difference. First operand 19027 states and 24313 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:55:55,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:55,168 INFO L93 Difference]: Finished difference Result 35918 states and 44644 transitions. [2023-12-21 21:55:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:55:55,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 137 [2023-12-21 21:55:55,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:55,201 INFO L225 Difference]: With dead ends: 35918 [2023-12-21 21:55:55,201 INFO L226 Difference]: Without dead ends: 19023 [2023-12-21 21:55:55,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:55:55,226 INFO L413 NwaCegarLoop]: 4158 mSDtfsCounter, 212 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 8115 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:55,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 8115 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:55:55,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19023 states. [2023-12-21 21:55:56,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19023 to 19023. [2023-12-21 21:55:56,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19023 states, 17033 states have (on average 1.2890271825280337) internal successors, (21956), 17307 states have internal predecessors, (21956), 868 states have call successors, (868), 704 states have call predecessors, (868), 1120 states have return successors, (1480), 1012 states have call predecessors, (1480), 868 states have call successors, (1480) [2023-12-21 21:55:56,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19023 states to 19023 states and 24304 transitions. [2023-12-21 21:55:56,109 INFO L78 Accepts]: Start accepts. Automaton has 19023 states and 24304 transitions. Word has length 137 [2023-12-21 21:55:56,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:56,110 INFO L495 AbstractCegarLoop]: Abstraction has 19023 states and 24304 transitions. [2023-12-21 21:55:56,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:55:56,110 INFO L276 IsEmpty]: Start isEmpty. Operand 19023 states and 24304 transitions. [2023-12-21 21:55:56,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 21:55:56,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:56,119 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:56,125 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 [2023-12-21 21:55:56,323 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 [2023-12-21 21:55:56,323 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:56,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:56,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1325188821, now seen corresponding path program 1 times [2023-12-21 21:55:56,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:56,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476691053] [2023-12-21 21:55:56,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:56,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:56,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:56,326 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) [2023-12-21 21:55:56,327 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 [2023-12-21 21:55:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:56,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:55:56,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 21:55:56,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:56,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:56,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476691053] [2023-12-21 21:55:56,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476691053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:56,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:56,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:55:56,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429168974] [2023-12-21 21:55:56,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:56,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:55:56,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:56,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:55:56,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:55:56,446 INFO L87 Difference]: Start difference. First operand 19023 states and 24304 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 21:55:57,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:57,680 INFO L93 Difference]: Finished difference Result 49161 states and 60780 transitions. [2023-12-21 21:55:57,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:55:57,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 139 [2023-12-21 21:55:57,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:57,717 INFO L225 Difference]: With dead ends: 49161 [2023-12-21 21:55:57,717 INFO L226 Difference]: Without dead ends: 25723 [2023-12-21 21:55:57,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:55:57,733 INFO L413 NwaCegarLoop]: 4329 mSDtfsCounter, 176 mSDsluCounter, 4151 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 8480 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:57,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 8480 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:55:57,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25723 states. [2023-12-21 21:55:58,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25723 to 25723. [2023-12-21 21:55:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25723 states, 22949 states have (on average 1.2649352912980958) internal successors, (29029), 23303 states have internal predecessors, (29029), 1236 states have call successors, (1236), 992 states have call predecessors, (1236), 1536 states have return successors, (2106), 1428 states have call predecessors, (2106), 1236 states have call successors, (2106) [2023-12-21 21:55:58,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25723 states to 25723 states and 32371 transitions. [2023-12-21 21:55:58,761 INFO L78 Accepts]: Start accepts. Automaton has 25723 states and 32371 transitions. Word has length 139 [2023-12-21 21:55:58,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:58,762 INFO L495 AbstractCegarLoop]: Abstraction has 25723 states and 32371 transitions. [2023-12-21 21:55:58,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 21:55:58,762 INFO L276 IsEmpty]: Start isEmpty. Operand 25723 states and 32371 transitions. [2023-12-21 21:55:58,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-21 21:55:58,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:58,805 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 21:55:58,811 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 [2023-12-21 21:55:59,008 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 [2023-12-21 21:55:59,009 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:59,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:59,009 INFO L85 PathProgramCache]: Analyzing trace with hash 952201055, now seen corresponding path program 1 times [2023-12-21 21:55:59,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:59,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167642872] [2023-12-21 21:55:59,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:59,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:55:59,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:59,010 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) [2023-12-21 21:55:59,012 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 [2023-12-21 21:55:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:59,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:55:59,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 21:55:59,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:59,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:59,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167642872] [2023-12-21 21:55:59,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167642872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:59,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:59,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:55:59,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786529586] [2023-12-21 21:55:59,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:59,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:55:59,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:59,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:55:59,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:55:59,229 INFO L87 Difference]: Start difference. First operand 25723 states and 32371 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 21:56:00,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:00,645 INFO L93 Difference]: Finished difference Result 55950 states and 68959 transitions. [2023-12-21 21:56:00,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:56:00,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 175 [2023-12-21 21:56:00,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:00,695 INFO L225 Difference]: With dead ends: 55950 [2023-12-21 21:56:00,695 INFO L226 Difference]: Without dead ends: 32359 [2023-12-21 21:56:00,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:00,715 INFO L413 NwaCegarLoop]: 4156 mSDtfsCounter, 4059 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4059 SdHoareTripleChecker+Valid, 4337 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:00,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4059 Valid, 4337 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:56:00,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32359 states. [2023-12-21 21:56:02,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32359 to 32311. [2023-12-21 21:56:02,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32311 states, 28817 states have (on average 1.2461047298469654) internal successors, (35909), 29211 states have internal predecessors, (35909), 1604 states have call successors, (1604), 1280 states have call predecessors, (1604), 1888 states have return successors, (2622), 1820 states have call predecessors, (2622), 1604 states have call successors, (2622) [2023-12-21 21:56:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32311 states to 32311 states and 40135 transitions. [2023-12-21 21:56:02,081 INFO L78 Accepts]: Start accepts. Automaton has 32311 states and 40135 transitions. Word has length 175 [2023-12-21 21:56:02,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:02,081 INFO L495 AbstractCegarLoop]: Abstraction has 32311 states and 40135 transitions. [2023-12-21 21:56:02,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 21:56:02,081 INFO L276 IsEmpty]: Start isEmpty. Operand 32311 states and 40135 transitions. [2023-12-21 21:56:02,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-21 21:56:02,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:02,098 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 21:56:02,102 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 [2023-12-21 21:56:02,302 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 [2023-12-21 21:56:02,302 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:02,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:02,302 INFO L85 PathProgramCache]: Analyzing trace with hash -983920095, now seen corresponding path program 1 times [2023-12-21 21:56:02,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:02,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798156172] [2023-12-21 21:56:02,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:02,303 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:56:02,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:02,304 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) [2023-12-21 21:56:02,305 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 [2023-12-21 21:56:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:02,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:56:02,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 21:56:02,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:02,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:02,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798156172] [2023-12-21 21:56:02,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798156172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:02,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:02,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:56:02,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191102238] [2023-12-21 21:56:02,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:02,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:56:02,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:02,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:56:02,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:56:02,517 INFO L87 Difference]: Start difference. First operand 32311 states and 40135 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 21:56:04,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:04,045 INFO L93 Difference]: Finished difference Result 62787 states and 76808 transitions. [2023-12-21 21:56:04,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:56:04,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 199 [2023-12-21 21:56:04,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:04,091 INFO L225 Difference]: With dead ends: 62787 [2023-12-21 21:56:04,091 INFO L226 Difference]: Without dead ends: 32609 [2023-12-21 21:56:04,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:56:04,111 INFO L413 NwaCegarLoop]: 4112 mSDtfsCounter, 4224 mSDsluCounter, 4195 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4230 SdHoareTripleChecker+Valid, 8307 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:04,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4230 Valid, 8307 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:56:04,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32609 states. [2023-12-21 21:56:05,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32609 to 32609. [2023-12-21 21:56:05,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32609 states, 29083 states have (on average 1.2385586081215831) internal successors, (36021), 29493 states have internal predecessors, (36021), 1604 states have call successors, (1604), 1280 states have call predecessors, (1604), 1920 states have return successors, (2400), 1836 states have call predecessors, (2400), 1604 states have call successors, (2400) [2023-12-21 21:56:05,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32609 states to 32609 states and 40025 transitions. [2023-12-21 21:56:05,829 INFO L78 Accepts]: Start accepts. Automaton has 32609 states and 40025 transitions. Word has length 199 [2023-12-21 21:56:05,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:05,830 INFO L495 AbstractCegarLoop]: Abstraction has 32609 states and 40025 transitions. [2023-12-21 21:56:05,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 21:56:05,830 INFO L276 IsEmpty]: Start isEmpty. Operand 32609 states and 40025 transitions. [2023-12-21 21:56:05,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-21 21:56:05,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:05,847 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 21:56:05,852 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 [2023-12-21 21:56:06,048 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 [2023-12-21 21:56:06,049 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:06,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:06,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1161888085, now seen corresponding path program 1 times [2023-12-21 21:56:06,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:06,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020563727] [2023-12-21 21:56:06,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:06,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:56:06,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:06,051 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) [2023-12-21 21:56:06,138 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 [2023-12-21 21:56:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:06,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:56:06,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 21:56:06,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:06,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:06,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020563727] [2023-12-21 21:56:06,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020563727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:06,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:06,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:56:06,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904406820] [2023-12-21 21:56:06,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:06,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:56:06,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:06,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:56:06,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:06,255 INFO L87 Difference]: Start difference. First operand 32609 states and 40025 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 21:56:07,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:07,498 INFO L93 Difference]: Finished difference Result 56529 states and 68431 transitions. [2023-12-21 21:56:07,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:56:07,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 200 [2023-12-21 21:56:07,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:07,560 INFO L225 Difference]: With dead ends: 56529 [2023-12-21 21:56:07,560 INFO L226 Difference]: Without dead ends: 32611 [2023-12-21 21:56:07,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:07,585 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 168 mSDsluCounter, 4157 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 8475 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:07,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 8475 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:56:07,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32611 states. [2023-12-21 21:56:09,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32611 to 32609. [2023-12-21 21:56:09,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32609 states, 29083 states have (on average 1.2368393907093491) internal successors, (35971), 29493 states have internal predecessors, (35971), 1604 states have call successors, (1604), 1280 states have call predecessors, (1604), 1920 states have return successors, (2394), 1836 states have call predecessors, (2394), 1604 states have call successors, (2394) [2023-12-21 21:56:09,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32609 states to 32609 states and 39969 transitions. [2023-12-21 21:56:09,153 INFO L78 Accepts]: Start accepts. Automaton has 32609 states and 39969 transitions. Word has length 200 [2023-12-21 21:56:09,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:09,153 INFO L495 AbstractCegarLoop]: Abstraction has 32609 states and 39969 transitions. [2023-12-21 21:56:09,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 21:56:09,153 INFO L276 IsEmpty]: Start isEmpty. Operand 32609 states and 39969 transitions. [2023-12-21 21:56:09,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-21 21:56:09,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:09,168 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 21:56:09,174 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 [2023-12-21 21:56:09,372 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 [2023-12-21 21:56:09,373 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:09,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:09,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1035406802, now seen corresponding path program 1 times [2023-12-21 21:56:09,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:09,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898995642] [2023-12-21 21:56:09,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:09,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:56:09,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:09,376 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) [2023-12-21 21:56:09,440 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 [2023-12-21 21:56:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:09,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:56:09,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 21:56:09,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:09,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:09,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898995642] [2023-12-21 21:56:09,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898995642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:09,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:09,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:56:09,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505490015] [2023-12-21 21:56:09,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:09,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:56:09,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:09,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:56:09,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:09,600 INFO L87 Difference]: Start difference. First operand 32609 states and 39969 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 21:56:11,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:11,920 INFO L93 Difference]: Finished difference Result 78189 states and 96171 transitions. [2023-12-21 21:56:11,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:56:11,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 201 [2023-12-21 21:56:11,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:12,020 INFO L225 Difference]: With dead ends: 78189 [2023-12-21 21:56:12,020 INFO L226 Difference]: Without dead ends: 54271 [2023-12-21 21:56:12,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:12,044 INFO L413 NwaCegarLoop]: 4162 mSDtfsCounter, 4150 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4150 SdHoareTripleChecker+Valid, 4343 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:12,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4150 Valid, 4343 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:56:12,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54271 states. [2023-12-21 21:56:14,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54271 to 53725. [2023-12-21 21:56:14,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53725 states, 47623 states have (on average 1.2115784389895639) internal successors, (57699), 48385 states have internal predecessors, (57699), 2740 states have call successors, (2740), 2176 states have call predecessors, (2740), 3360 states have return successors, (5262), 3164 states have call predecessors, (5262), 2740 states have call successors, (5262) [2023-12-21 21:56:14,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53725 states to 53725 states and 65701 transitions. [2023-12-21 21:56:14,588 INFO L78 Accepts]: Start accepts. Automaton has 53725 states and 65701 transitions. Word has length 201 [2023-12-21 21:56:14,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:14,588 INFO L495 AbstractCegarLoop]: Abstraction has 53725 states and 65701 transitions. [2023-12-21 21:56:14,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 21:56:14,588 INFO L276 IsEmpty]: Start isEmpty. Operand 53725 states and 65701 transitions. [2023-12-21 21:56:14,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-21 21:56:14,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:14,612 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 21:56:14,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-12-21 21:56:14,815 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 [2023-12-21 21:56:14,949 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:14,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:14,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1533821993, now seen corresponding path program 1 times [2023-12-21 21:56:14,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:14,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917883371] [2023-12-21 21:56:14,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:14,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:56:14,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:14,951 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) [2023-12-21 21:56:14,956 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 [2023-12-21 21:56:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:15,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:56:15,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:15,088 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 21:56:15,088 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:15,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:15,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917883371] [2023-12-21 21:56:15,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917883371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:15,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:15,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:56:15,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957865285] [2023-12-21 21:56:15,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:15,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:56:15,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:15,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:56:15,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:56:15,090 INFO L87 Difference]: Start difference. First operand 53725 states and 65701 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 21:56:17,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:17,497 INFO L93 Difference]: Finished difference Result 104214 states and 128479 transitions. [2023-12-21 21:56:17,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:56:17,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 202 [2023-12-21 21:56:17,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:17,577 INFO L225 Difference]: With dead ends: 104214 [2023-12-21 21:56:17,578 INFO L226 Difference]: Without dead ends: 45383 [2023-12-21 21:56:17,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:56:17,622 INFO L413 NwaCegarLoop]: 4157 mSDtfsCounter, 2 mSDsluCounter, 8309 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12466 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:17,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12466 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:56:17,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45383 states. [2023-12-21 21:56:19,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45383 to 45290. [2023-12-21 21:56:19,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45290 states, 40612 states have (on average 1.198315768738304) internal successors, (48666), 40950 states have internal predecessors, (48666), 2340 states have call successors, (2340), 1856 states have call predecessors, (2340), 2336 states have return successors, (3436), 2484 states have call predecessors, (3436), 2340 states have call successors, (3436) [2023-12-21 21:56:19,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45290 states to 45290 states and 54442 transitions. [2023-12-21 21:56:19,904 INFO L78 Accepts]: Start accepts. Automaton has 45290 states and 54442 transitions. Word has length 202 [2023-12-21 21:56:19,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:19,904 INFO L495 AbstractCegarLoop]: Abstraction has 45290 states and 54442 transitions. [2023-12-21 21:56:19,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 21:56:19,904 INFO L276 IsEmpty]: Start isEmpty. Operand 45290 states and 54442 transitions. [2023-12-21 21:56:19,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-21 21:56:19,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:19,926 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:19,933 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 [2023-12-21 21:56:20,131 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 [2023-12-21 21:56:20,131 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:20,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:20,132 INFO L85 PathProgramCache]: Analyzing trace with hash -742750507, now seen corresponding path program 1 times [2023-12-21 21:56:20,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:20,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293826784] [2023-12-21 21:56:20,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:20,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:56:20,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:20,133 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) [2023-12-21 21:56:20,134 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 [2023-12-21 21:56:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:20,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:56:20,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:20,389 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 21:56:20,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:20,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:20,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293826784] [2023-12-21 21:56:20,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293826784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:20,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:20,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:56:20,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821051921] [2023-12-21 21:56:20,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:20,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:56:20,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:20,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:56:20,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:20,391 INFO L87 Difference]: Start difference. First operand 45290 states and 54442 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 21:56:22,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:22,784 INFO L93 Difference]: Finished difference Result 94364 states and 111861 transitions. [2023-12-21 21:56:22,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:56:22,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 236 [2023-12-21 21:56:22,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:22,887 INFO L225 Difference]: With dead ends: 94364 [2023-12-21 21:56:22,888 INFO L226 Difference]: Without dead ends: 51206 [2023-12-21 21:56:22,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:22,928 INFO L413 NwaCegarLoop]: 4156 mSDtfsCounter, 4040 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4040 SdHoareTripleChecker+Valid, 4337 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:22,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4040 Valid, 4337 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:56:22,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51206 states. [2023-12-21 21:56:25,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51206 to 51110. [2023-12-21 21:56:25,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51110 states, 45792 states have (on average 1.1892470300489169) internal successors, (54458), 46162 states have internal predecessors, (54458), 2676 states have call successors, (2676), 2112 states have call predecessors, (2676), 2640 states have return successors, (3856), 2836 states have call predecessors, (3856), 2676 states have call successors, (3856) [2023-12-21 21:56:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51110 states to 51110 states and 60990 transitions. [2023-12-21 21:56:25,537 INFO L78 Accepts]: Start accepts. Automaton has 51110 states and 60990 transitions. Word has length 236 [2023-12-21 21:56:25,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:25,537 INFO L495 AbstractCegarLoop]: Abstraction has 51110 states and 60990 transitions. [2023-12-21 21:56:25,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-21 21:56:25,538 INFO L276 IsEmpty]: Start isEmpty. Operand 51110 states and 60990 transitions. [2023-12-21 21:56:25,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-12-21 21:56:25,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:25,564 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:25,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-12-21 21:56:25,768 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 [2023-12-21 21:56:25,768 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:25,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:25,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1289701177, now seen corresponding path program 1 times [2023-12-21 21:56:25,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:25,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521191371] [2023-12-21 21:56:25,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:25,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:56:25,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:25,770 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) [2023-12-21 21:56:25,771 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 [2023-12-21 21:56:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:25,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:56:25,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:25,963 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 21:56:25,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:25,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:25,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521191371] [2023-12-21 21:56:25,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521191371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:25,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:25,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:56:25,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289982779] [2023-12-21 21:56:25,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:25,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:56:25,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:25,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:56:25,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:25,965 INFO L87 Difference]: Start difference. First operand 51110 states and 60990 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 21:56:28,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:28,631 INFO L93 Difference]: Finished difference Result 94272 states and 111462 transitions. [2023-12-21 21:56:28,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:56:28,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 239 [2023-12-21 21:56:28,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:28,753 INFO L225 Difference]: With dead ends: 94272 [2023-12-21 21:56:28,754 INFO L226 Difference]: Without dead ends: 51115 [2023-12-21 21:56:28,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:28,792 INFO L413 NwaCegarLoop]: 4309 mSDtfsCounter, 165 mSDsluCounter, 4150 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 8459 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:28,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 8459 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:56:28,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51115 states. [2023-12-21 21:56:31,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51115 to 51110. [2023-12-21 21:56:31,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51110 states, 45792 states have (on average 1.186975890985325) internal successors, (54354), 46162 states have internal predecessors, (54354), 2676 states have call successors, (2676), 2112 states have call predecessors, (2676), 2640 states have return successors, (3832), 2836 states have call predecessors, (3832), 2676 states have call successors, (3832) [2023-12-21 21:56:31,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51110 states to 51110 states and 60862 transitions. [2023-12-21 21:56:31,375 INFO L78 Accepts]: Start accepts. Automaton has 51110 states and 60862 transitions. Word has length 239 [2023-12-21 21:56:31,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:31,375 INFO L495 AbstractCegarLoop]: Abstraction has 51110 states and 60862 transitions. [2023-12-21 21:56:31,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 21:56:31,375 INFO L276 IsEmpty]: Start isEmpty. Operand 51110 states and 60862 transitions. [2023-12-21 21:56:31,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-12-21 21:56:31,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:31,398 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:31,404 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 (32)] Ended with exit code 0 [2023-12-21 21:56:31,602 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 [2023-12-21 21:56:31,602 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:31,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:31,603 INFO L85 PathProgramCache]: Analyzing trace with hash -240783884, now seen corresponding path program 1 times [2023-12-21 21:56:31,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:31,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604078302] [2023-12-21 21:56:31,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:31,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:56:31,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:31,604 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) [2023-12-21 21:56:31,605 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 [2023-12-21 21:56:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:31,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:56:31,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:31,878 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-21 21:56:31,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:31,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:31,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604078302] [2023-12-21 21:56:31,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604078302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:31,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:31,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:56:31,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369355263] [2023-12-21 21:56:31,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:31,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:56:31,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:31,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:56:31,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:31,880 INFO L87 Difference]: Start difference. First operand 51110 states and 60862 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 21:56:34,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:34,620 INFO L93 Difference]: Finished difference Result 105256 states and 123709 transitions. [2023-12-21 21:56:34,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:56:34,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 276 [2023-12-21 21:56:34,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:34,724 INFO L225 Difference]: With dead ends: 105256 [2023-12-21 21:56:34,724 INFO L226 Difference]: Without dead ends: 56278 [2023-12-21 21:56:34,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:34,761 INFO L413 NwaCegarLoop]: 4156 mSDtfsCounter, 4027 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4027 SdHoareTripleChecker+Valid, 4337 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:34,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4027 Valid, 4337 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:56:34,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56278 states. [2023-12-21 21:56:37,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56278 to 56166. [2023-12-21 21:56:37,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56166 states, 50288 states have (on average 1.1792475342029907) internal successors, (59302), 50682 states have internal predecessors, (59302), 2980 states have call successors, (2980), 2336 states have call predecessors, (2980), 2896 states have return successors, (4192), 3148 states have call predecessors, (4192), 2980 states have call successors, (4192) [2023-12-21 21:56:37,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56166 states to 56166 states and 66474 transitions. [2023-12-21 21:56:37,590 INFO L78 Accepts]: Start accepts. Automaton has 56166 states and 66474 transitions. Word has length 276 [2023-12-21 21:56:37,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:37,591 INFO L495 AbstractCegarLoop]: Abstraction has 56166 states and 66474 transitions. [2023-12-21 21:56:37,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 21:56:37,591 INFO L276 IsEmpty]: Start isEmpty. Operand 56166 states and 66474 transitions. [2023-12-21 21:56:37,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-21 21:56:37,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:37,618 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:37,625 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 [2023-12-21 21:56:37,823 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 [2023-12-21 21:56:37,823 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:37,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:37,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1360510167, now seen corresponding path program 1 times [2023-12-21 21:56:37,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:37,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803634016] [2023-12-21 21:56:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:37,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:56:37,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:37,825 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) [2023-12-21 21:56:37,826 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 [2023-12-21 21:56:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:37,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:56:37,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 21:56:38,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:38,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:38,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803634016] [2023-12-21 21:56:38,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803634016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:38,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:38,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:56:38,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449372235] [2023-12-21 21:56:38,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:38,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:56:38,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:38,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:56:38,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:38,008 INFO L87 Difference]: Start difference. First operand 56166 states and 66474 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 21:56:40,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:40,755 INFO L93 Difference]: Finished difference Result 105148 states and 123366 transitions. [2023-12-21 21:56:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:56:40,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 279 [2023-12-21 21:56:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:40,861 INFO L225 Difference]: With dead ends: 105148 [2023-12-21 21:56:40,861 INFO L226 Difference]: Without dead ends: 56171 [2023-12-21 21:56:40,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:40,909 INFO L413 NwaCegarLoop]: 4300 mSDtfsCounter, 162 mSDsluCounter, 4148 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 8448 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:40,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 8448 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:56:40,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56171 states. [2023-12-21 21:56:43,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56171 to 56166. [2023-12-21 21:56:43,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56166 states, 50288 states have (on average 1.1766226535157494) internal successors, (59170), 50682 states have internal predecessors, (59170), 2980 states have call successors, (2980), 2336 states have call predecessors, (2980), 2896 states have return successors, (4132), 3148 states have call predecessors, (4132), 2980 states have call successors, (4132) [2023-12-21 21:56:43,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56166 states to 56166 states and 66282 transitions. [2023-12-21 21:56:43,733 INFO L78 Accepts]: Start accepts. Automaton has 56166 states and 66282 transitions. Word has length 279 [2023-12-21 21:56:43,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:43,733 INFO L495 AbstractCegarLoop]: Abstraction has 56166 states and 66282 transitions. [2023-12-21 21:56:43,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 21:56:43,734 INFO L276 IsEmpty]: Start isEmpty. Operand 56166 states and 66282 transitions. [2023-12-21 21:56:43,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-21 21:56:43,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:43,761 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:43,765 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 [2023-12-21 21:56:43,967 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 [2023-12-21 21:56:43,968 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:43,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:43,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1983561401, now seen corresponding path program 1 times [2023-12-21 21:56:43,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:43,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330258157] [2023-12-21 21:56:43,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:43,969 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:56:43,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:43,970 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) [2023-12-21 21:56:43,971 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 [2023-12-21 21:56:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:44,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:56:44,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2023-12-21 21:56:44,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:44,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:44,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330258157] [2023-12-21 21:56:44,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330258157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:44,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:44,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:56:44,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096130383] [2023-12-21 21:56:44,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:44,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:56:44,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:44,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:56:44,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:44,249 INFO L87 Difference]: Start difference. First operand 56166 states and 66282 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 21:56:47,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:47,407 INFO L93 Difference]: Finished difference Result 114592 states and 133529 transitions. [2023-12-21 21:56:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:56:47,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 316 [2023-12-21 21:56:47,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:47,512 INFO L225 Difference]: With dead ends: 114592 [2023-12-21 21:56:47,512 INFO L226 Difference]: Without dead ends: 60558 [2023-12-21 21:56:47,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:47,546 INFO L413 NwaCegarLoop]: 4194 mSDtfsCounter, 4014 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4014 SdHoareTripleChecker+Valid, 4375 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:47,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4014 Valid, 4375 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:56:47,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60558 states. [2023-12-21 21:56:50,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60558 to 60430. [2023-12-21 21:56:50,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60430 states, 54072 states have (on average 1.16988459831336) internal successors, (63258), 54482 states have internal predecessors, (63258), 3252 states have call successors, (3252), 2528 states have call predecessors, (3252), 3104 states have return successors, (4420), 3420 states have call predecessors, (4420), 3252 states have call successors, (4420) [2023-12-21 21:56:50,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60430 states to 60430 states and 70930 transitions. [2023-12-21 21:56:50,733 INFO L78 Accepts]: Start accepts. Automaton has 60430 states and 70930 transitions. Word has length 316 [2023-12-21 21:56:50,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:50,734 INFO L495 AbstractCegarLoop]: Abstraction has 60430 states and 70930 transitions. [2023-12-21 21:56:50,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 21:56:50,734 INFO L276 IsEmpty]: Start isEmpty. Operand 60430 states and 70930 transitions. [2023-12-21 21:56:50,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-12-21 21:56:50,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:50,767 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:50,786 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 [2023-12-21 21:56:50,973 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 [2023-12-21 21:56:50,973 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:50,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:50,973 INFO L85 PathProgramCache]: Analyzing trace with hash -480415572, now seen corresponding path program 1 times [2023-12-21 21:56:50,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:50,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202976098] [2023-12-21 21:56:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:50,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:56:50,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:50,975 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) [2023-12-21 21:56:50,976 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 [2023-12-21 21:56:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:51,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:56:51,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:51,171 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-12-21 21:56:51,172 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:51,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:51,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202976098] [2023-12-21 21:56:51,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202976098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:51,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:51,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:56:51,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773251774] [2023-12-21 21:56:51,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:51,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:56:51,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:51,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:56:51,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:51,173 INFO L87 Difference]: Start difference. First operand 60430 states and 70930 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 21:56:52,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:52,176 INFO L93 Difference]: Finished difference Result 70811 states and 82624 transitions. [2023-12-21 21:56:52,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:56:52,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 319 [2023-12-21 21:56:52,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:52,193 INFO L225 Difference]: With dead ends: 70811 [2023-12-21 21:56:52,193 INFO L226 Difference]: Without dead ends: 10966 [2023-12-21 21:56:52,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:52,240 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 165 mSDsluCounter, 4118 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 8372 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:52,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 8372 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:56:52,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10966 states. [2023-12-21 21:56:52,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10966 to 10966. [2023-12-21 21:56:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10966 states, 9966 states have (on average 1.2519566526189043) internal successors, (12477), 10003 states have internal predecessors, (12477), 567 states have call successors, (567), 398 states have call predecessors, (567), 431 states have return successors, (603), 565 states have call predecessors, (603), 567 states have call successors, (603) [2023-12-21 21:56:52,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10966 states to 10966 states and 13647 transitions. [2023-12-21 21:56:52,989 INFO L78 Accepts]: Start accepts. Automaton has 10966 states and 13647 transitions. Word has length 319 [2023-12-21 21:56:52,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:52,989 INFO L495 AbstractCegarLoop]: Abstraction has 10966 states and 13647 transitions. [2023-12-21 21:56:52,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 21:56:52,990 INFO L276 IsEmpty]: Start isEmpty. Operand 10966 states and 13647 transitions. [2023-12-21 21:56:52,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2023-12-21 21:56:52,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:52,998 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:53,005 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 [2023-12-21 21:56:53,203 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 [2023-12-21 21:56:53,204 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:53,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:53,204 INFO L85 PathProgramCache]: Analyzing trace with hash -35030221, now seen corresponding path program 1 times [2023-12-21 21:56:53,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:53,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941565677] [2023-12-21 21:56:53,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:53,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:56:53,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:53,206 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:56:53,206 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 [2023-12-21 21:56:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:53,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:56:53,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:53,398 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 348 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-21 21:56:53,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:53,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:53,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941565677] [2023-12-21 21:56:53,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941565677] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:53,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:53,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:56:53,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811794732] [2023-12-21 21:56:53,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:53,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:56:53,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:53,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:56:53,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:53,400 INFO L87 Difference]: Start difference. First operand 10966 states and 13647 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15)