/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_label41+token_ring.09.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 21:44:16,391 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 21:44:16,462 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 21:44:16,466 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 21:44:16,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 21:44:16,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 21:44:16,483 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 21:44:16,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 21:44:16,484 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 21:44:16,485 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 21:44:16,485 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 21:44:16,485 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 21:44:16,486 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 21:44:16,486 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 21:44:16,486 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 21:44:16,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 21:44:16,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 21:44:16,487 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 21:44:16,488 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 21:44:16,488 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 21:44:16,488 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 21:44:16,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 21:44:16,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 21:44:16,489 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 21:44:16,490 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 21:44:16,490 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 21:44:16,490 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 21:44:16,490 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 21:44:16,491 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 21:44:16,491 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 21:44:16,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 21:44:16,492 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 21:44:16,492 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 21:44:16,492 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 21:44:16,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:44:16,493 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 21:44:16,493 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 21:44:16,493 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 21:44:16,493 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 21:44:16,494 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 21:44:16,494 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 21:44:16,496 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 21:44:16,497 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 21:44:16,497 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 21:44:16,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 21:44:16,497 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 21:44:16,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 21:44:16,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 21:44:16,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 21:44:16,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 21:44:16,751 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 21:44:16,752 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 21:44:16,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label41+token_ring.09.cil-1.c [2023-12-21 21:44:17,845 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 21:44:18,432 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 21:44:18,432 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.09.cil-1.c [2023-12-21 21:44:18,488 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8cf74346/a99b4e76f9e9473595cd421398cb2f8c/FLAG6b801c5cb [2023-12-21 21:44:18,507 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8cf74346/a99b4e76f9e9473595cd421398cb2f8c [2023-12-21 21:44:18,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 21:44:18,512 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 21:44:18,513 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 21:44:18,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 21:44:18,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 21:44:18,518 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:44:18" (1/1) ... [2023-12-21 21:44:18,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16ed8cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:44:18, skipping insertion in model container [2023-12-21 21:44:18,519 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:44:18" (1/1) ... [2023-12-21 21:44:18,714 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 21:44:20,369 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_label41+token_ring.09.cil-1.c[376251,376264] [2023-12-21 21:44:20,399 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_label41+token_ring.09.cil-1.c[383339,383352] [2023-12-21 21:44:20,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:44:20,628 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 21:44:21,459 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_label41+token_ring.09.cil-1.c[376251,376264] [2023-12-21 21:44:21,467 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_label41+token_ring.09.cil-1.c[383339,383352] [2023-12-21 21:44:21,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:44:21,554 INFO L206 MainTranslator]: Completed translation [2023-12-21 21:44:21,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:44:21 WrapperNode [2023-12-21 21:44:21,559 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 21:44:21,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 21:44:21,560 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 21:44:21,560 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 21:44:21,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:44:21" (1/1) ... [2023-12-21 21:44:21,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:44:21" (1/1) ... [2023-12-21 21:44:21,968 INFO L138 Inliner]: procedures = 63, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13017 [2023-12-21 21:44:21,969 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 21:44:21,969 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 21:44:21,970 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 21:44:21,970 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 21:44:21,979 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:44:21" (1/1) ... [2023-12-21 21:44:21,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:44:21" (1/1) ... [2023-12-21 21:44:22,053 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:44:21" (1/1) ... [2023-12-21 21:44:22,227 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 21:44:22,227 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:44:21" (1/1) ... [2023-12-21 21:44:22,228 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:44:21" (1/1) ... [2023-12-21 21:44:22,404 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:44:21" (1/1) ... [2023-12-21 21:44:22,458 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:44:21" (1/1) ... [2023-12-21 21:44:22,498 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:44:21" (1/1) ... [2023-12-21 21:44:22,526 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:44:21" (1/1) ... [2023-12-21 21:44:22,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 21:44:22,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 21:44:22,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 21:44:22,595 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 21:44:22,595 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:44:21" (1/1) ... [2023-12-21 21:44:22,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:44:22,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 21:44:22,634 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 21:44:22,651 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 21:44:22,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 21:44:22,665 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 21:44:22,665 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 21:44:22,665 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 21:44:22,665 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 21:44:22,665 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 21:44:22,665 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 21:44:22,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 21:44:22,665 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 21:44:22,665 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 21:44:22,665 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 21:44:22,666 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 21:44:22,666 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 21:44:22,666 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 21:44:22,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 21:44:22,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 21:44:22,856 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 21:44:22,858 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 21:44:31,700 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 21:44:31,794 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 21:44:31,795 INFO L309 CfgBuilder]: Removed 13 assume(true) statements. [2023-12-21 21:44:31,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:44:31 BoogieIcfgContainer [2023-12-21 21:44:31,795 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 21:44:31,797 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 21:44:31,797 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 21:44:31,800 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 21:44:31,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:44:18" (1/3) ... [2023-12-21 21:44:31,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41401099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:44:31, skipping insertion in model container [2023-12-21 21:44:31,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:44:21" (2/3) ... [2023-12-21 21:44:31,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41401099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:44:31, skipping insertion in model container [2023-12-21 21:44:31,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:44:31" (3/3) ... [2023-12-21 21:44:31,802 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.09.cil-1.c [2023-12-21 21:44:31,817 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 21:44:31,817 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 21:44:31,895 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 21:44:31,900 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;@72bcb989, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 21:44:31,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 21:44:31,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 2402 states, 2370 states have (on average 1.8784810126582279) internal successors, (4452), 2373 states have internal predecessors, (4452), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-21 21:44:31,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:31,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:31,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:31,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:31,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:31,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1643509846, now seen corresponding path program 1 times [2023-12-21 21:44:31,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:31,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461299464] [2023-12-21 21:44:31,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:31,962 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 21:44:31,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:31,968 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 21:44:32,029 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 21:44:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:32,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:44:32,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:32,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:44:32,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:32,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:32,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461299464] [2023-12-21 21:44:32,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461299464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:32,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:32,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:44:32,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072267620] [2023-12-21 21:44:32,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:32,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:44:32,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:32,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:44:32,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:44:32,341 INFO L87 Difference]: Start difference. First operand has 2402 states, 2370 states have (on average 1.8784810126582279) internal successors, (4452), 2373 states have internal predecessors, (4452), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 21:44:32,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:32,549 INFO L93 Difference]: Finished difference Result 4798 states and 8983 transitions. [2023-12-21 21:44:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:44:32,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:32,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:32,571 INFO L225 Difference]: With dead ends: 4798 [2023-12-21 21:44:32,571 INFO L226 Difference]: Without dead ends: 2398 [2023-12-21 21:44:32,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 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 21:44:32,582 INFO L413 NwaCegarLoop]: 4371 mSDtfsCounter, 441 mSDsluCounter, 3959 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 8330 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:32,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 8330 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:44:32,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2023-12-21 21:44:32,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2398. [2023-12-21 21:44:32,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2367 states have (on average 1.8411491339247994) internal successors, (4358), 2369 states have internal predecessors, (4358), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-21 21:44:32,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4404 transitions. [2023-12-21 21:44:32,710 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4404 transitions. Word has length 131 [2023-12-21 21:44:32,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:32,712 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 4404 transitions. [2023-12-21 21:44:32,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 21:44:32,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4404 transitions. [2023-12-21 21:44:32,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:32,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:32,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:32,727 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 21:44:32,920 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 21:44:32,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:32,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:32,922 INFO L85 PathProgramCache]: Analyzing trace with hash 406899052, now seen corresponding path program 1 times [2023-12-21 21:44:32,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:32,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896016977] [2023-12-21 21:44:32,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:32,923 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 21:44:32,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:32,924 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 21:44:32,925 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 21:44:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:33,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:33,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:33,170 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 21:44:33,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:33,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:33,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896016977] [2023-12-21 21:44:33,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896016977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:33,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:33,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:33,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838317731] [2023-12-21 21:44:33,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:33,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:33,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:33,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:33,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:33,174 INFO L87 Difference]: Start difference. First operand 2398 states and 4404 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 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 21:44:34,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:34,036 INFO L93 Difference]: Finished difference Result 2959 states and 5319 transitions. [2023-12-21 21:44:34,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:44:34,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:34,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:34,052 INFO L225 Difference]: With dead ends: 2959 [2023-12-21 21:44:34,052 INFO L226 Difference]: Without dead ends: 2697 [2023-12-21 21:44:34,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 21:44:34,056 INFO L413 NwaCegarLoop]: 4283 mSDtfsCounter, 4807 mSDsluCounter, 8731 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4824 SdHoareTripleChecker+Valid, 13014 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:34,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4824 Valid, 13014 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 21:44:34,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2697 states. [2023-12-21 21:44:34,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2697 to 2674. [2023-12-21 21:44:34,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2618 states have (on average 1.8216195569136746) internal successors, (4769), 2621 states have internal predecessors, (4769), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:44:34,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4852 transitions. [2023-12-21 21:44:34,136 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4852 transitions. Word has length 131 [2023-12-21 21:44:34,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:34,137 INFO L495 AbstractCegarLoop]: Abstraction has 2674 states and 4852 transitions. [2023-12-21 21:44:34,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 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 21:44:34,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4852 transitions. [2023-12-21 21:44:34,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:34,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:34,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:34,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-21 21:44:34,344 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 21:44:34,344 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:34,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:34,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1501391760, now seen corresponding path program 1 times [2023-12-21 21:44:34,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:34,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471140823] [2023-12-21 21:44:34,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:34,346 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 21:44:34,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:34,347 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 21:44:34,350 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 21:44:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:34,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:34,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:34,576 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 21:44:34,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:34,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:34,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471140823] [2023-12-21 21:44:34,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471140823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:34,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:34,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:34,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170393236] [2023-12-21 21:44:34,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:34,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:34,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:34,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:34,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:34,579 INFO L87 Difference]: Start difference. First operand 2674 states and 4852 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:35,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:35,055 INFO L93 Difference]: Finished difference Result 3212 states and 5727 transitions. [2023-12-21 21:44:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:44:35,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:35,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:35,066 INFO L225 Difference]: With dead ends: 3212 [2023-12-21 21:44:35,066 INFO L226 Difference]: Without dead ends: 2674 [2023-12-21 21:44:35,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 21:44:35,069 INFO L413 NwaCegarLoop]: 4235 mSDtfsCounter, 4555 mSDsluCounter, 8348 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4572 SdHoareTripleChecker+Valid, 12583 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:35,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4572 Valid, 12583 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:44:35,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2023-12-21 21:44:35,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2023-12-21 21:44:35,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2618 states have (on average 1.8189457601222307) internal successors, (4762), 2621 states have internal predecessors, (4762), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:44:35,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4845 transitions. [2023-12-21 21:44:35,145 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4845 transitions. Word has length 131 [2023-12-21 21:44:35,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:35,145 INFO L495 AbstractCegarLoop]: Abstraction has 2674 states and 4845 transitions. [2023-12-21 21:44:35,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4845 transitions. [2023-12-21 21:44:35,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:35,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:35,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:35,155 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 21:44:35,354 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 21:44:35,355 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:35,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:35,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1424402196, now seen corresponding path program 1 times [2023-12-21 21:44:35,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:35,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525344165] [2023-12-21 21:44:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:35,357 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 21:44:35,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:35,358 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 21:44:35,362 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 21:44:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:35,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:35,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:35,572 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 21:44:35,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:35,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:35,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525344165] [2023-12-21 21:44:35,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525344165] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:35,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:35,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:35,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754794892] [2023-12-21 21:44:35,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:35,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:35,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:35,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:35,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:35,581 INFO L87 Difference]: Start difference. First operand 2674 states and 4845 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:36,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:36,043 INFO L93 Difference]: Finished difference Result 3212 states and 5713 transitions. [2023-12-21 21:44:36,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:44:36,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:36,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:36,055 INFO L225 Difference]: With dead ends: 3212 [2023-12-21 21:44:36,055 INFO L226 Difference]: Without dead ends: 2674 [2023-12-21 21:44:36,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 21:44:36,058 INFO L413 NwaCegarLoop]: 4232 mSDtfsCounter, 4548 mSDsluCounter, 8344 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4565 SdHoareTripleChecker+Valid, 12576 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:36,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4565 Valid, 12576 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:44:36,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2023-12-21 21:44:36,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2023-12-21 21:44:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2618 states have (on average 1.8162719633307869) internal successors, (4755), 2621 states have internal predecessors, (4755), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:44:36,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4838 transitions. [2023-12-21 21:44:36,126 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4838 transitions. Word has length 131 [2023-12-21 21:44:36,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:36,127 INFO L495 AbstractCegarLoop]: Abstraction has 2674 states and 4838 transitions. [2023-12-21 21:44:36,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:36,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4838 transitions. [2023-12-21 21:44:36,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:36,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:36,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:36,136 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 21:44:36,333 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 21:44:36,334 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:36,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:36,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1504768920, now seen corresponding path program 1 times [2023-12-21 21:44:36,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:36,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530642538] [2023-12-21 21:44:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:36,335 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 21:44:36,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:36,336 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 21:44:36,337 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 21:44:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:36,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:36,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:36,550 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 21:44:36,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:36,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:36,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530642538] [2023-12-21 21:44:36,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530642538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:36,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:36,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:36,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617128178] [2023-12-21 21:44:36,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:36,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:36,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:36,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:36,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:36,552 INFO L87 Difference]: Start difference. First operand 2674 states and 4838 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:37,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:37,006 INFO L93 Difference]: Finished difference Result 3212 states and 5699 transitions. [2023-12-21 21:44:37,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:44:37,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:37,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:37,026 INFO L225 Difference]: With dead ends: 3212 [2023-12-21 21:44:37,029 INFO L226 Difference]: Without dead ends: 2674 [2023-12-21 21:44:37,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 21:44:37,038 INFO L413 NwaCegarLoop]: 4229 mSDtfsCounter, 4542 mSDsluCounter, 8340 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4559 SdHoareTripleChecker+Valid, 12569 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:37,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4559 Valid, 12569 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:44:37,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2023-12-21 21:44:37,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2023-12-21 21:44:37,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2618 states have (on average 1.813598166539343) internal successors, (4748), 2621 states have internal predecessors, (4748), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:44:37,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4831 transitions. [2023-12-21 21:44:37,132 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4831 transitions. Word has length 131 [2023-12-21 21:44:37,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:37,133 INFO L495 AbstractCegarLoop]: Abstraction has 2674 states and 4831 transitions. [2023-12-21 21:44:37,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:37,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4831 transitions. [2023-12-21 21:44:37,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:37,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:37,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:37,149 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 21:44:37,352 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 21:44:37,353 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:37,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:37,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1679227244, now seen corresponding path program 1 times [2023-12-21 21:44:37,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:37,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919824639] [2023-12-21 21:44:37,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:37,355 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 21:44:37,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:37,356 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 21:44:37,392 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 21:44:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:37,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:37,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:37,556 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 21:44:37,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:37,556 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:37,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919824639] [2023-12-21 21:44:37,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919824639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:37,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:37,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:37,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385772073] [2023-12-21 21:44:37,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:37,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:37,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:37,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:37,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:37,558 INFO L87 Difference]: Start difference. First operand 2674 states and 4831 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:38,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:38,083 INFO L93 Difference]: Finished difference Result 3212 states and 5685 transitions. [2023-12-21 21:44:38,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:44:38,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:38,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:38,095 INFO L225 Difference]: With dead ends: 3212 [2023-12-21 21:44:38,095 INFO L226 Difference]: Without dead ends: 2674 [2023-12-21 21:44:38,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 21:44:38,099 INFO L413 NwaCegarLoop]: 4226 mSDtfsCounter, 4536 mSDsluCounter, 8336 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4553 SdHoareTripleChecker+Valid, 12562 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:38,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4553 Valid, 12562 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:44:38,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2023-12-21 21:44:38,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2023-12-21 21:44:38,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2618 states have (on average 1.8109243697478992) internal successors, (4741), 2621 states have internal predecessors, (4741), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:44:38,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4824 transitions. [2023-12-21 21:44:38,193 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4824 transitions. Word has length 131 [2023-12-21 21:44:38,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:38,194 INFO L495 AbstractCegarLoop]: Abstraction has 2674 states and 4824 transitions. [2023-12-21 21:44:38,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:38,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4824 transitions. [2023-12-21 21:44:38,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:38,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:38,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:38,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 21:44:38,402 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 21:44:38,403 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:38,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:38,403 INFO L85 PathProgramCache]: Analyzing trace with hash -19178520, now seen corresponding path program 1 times [2023-12-21 21:44:38,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:38,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32437661] [2023-12-21 21:44:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:38,404 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 21:44:38,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:38,406 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 21:44:38,440 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 (8)] Waiting until timeout for monitored process [2023-12-21 21:44:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:38,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:38,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:38,630 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 21:44:38,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:38,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:38,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32437661] [2023-12-21 21:44:38,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32437661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:38,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:38,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:38,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490334145] [2023-12-21 21:44:38,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:38,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:38,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:38,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:38,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:38,633 INFO L87 Difference]: Start difference. First operand 2674 states and 4824 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:39,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:39,084 INFO L93 Difference]: Finished difference Result 3212 states and 5671 transitions. [2023-12-21 21:44:39,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:44:39,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:39,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:39,099 INFO L225 Difference]: With dead ends: 3212 [2023-12-21 21:44:39,100 INFO L226 Difference]: Without dead ends: 2674 [2023-12-21 21:44:39,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 21:44:39,103 INFO L413 NwaCegarLoop]: 4223 mSDtfsCounter, 4530 mSDsluCounter, 8332 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4547 SdHoareTripleChecker+Valid, 12555 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:39,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4547 Valid, 12555 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:44:39,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2023-12-21 21:44:39,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2023-12-21 21:44:39,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2618 states have (on average 1.8082505729564553) internal successors, (4734), 2621 states have internal predecessors, (4734), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:44:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4817 transitions. [2023-12-21 21:44:39,178 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4817 transitions. Word has length 131 [2023-12-21 21:44:39,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:39,179 INFO L495 AbstractCegarLoop]: Abstraction has 2674 states and 4817 transitions. [2023-12-21 21:44:39,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:39,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4817 transitions. [2023-12-21 21:44:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:39,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:39,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:39,188 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 21:44:39,386 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 21:44:39,387 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:39,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:39,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2133928298, now seen corresponding path program 1 times [2023-12-21 21:44:39,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:39,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632717408] [2023-12-21 21:44:39,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:39,388 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 21:44:39,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:39,390 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 21:44:39,392 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 21:44:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:39,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:39,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:39,599 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 21:44:39,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:39,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:39,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632717408] [2023-12-21 21:44:39,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632717408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:39,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:39,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:39,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589841814] [2023-12-21 21:44:39,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:39,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:39,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:39,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:39,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:39,601 INFO L87 Difference]: Start difference. First operand 2674 states and 4817 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:39,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:40,000 INFO L93 Difference]: Finished difference Result 3212 states and 5657 transitions. [2023-12-21 21:44:40,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:44:40,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:40,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:40,012 INFO L225 Difference]: With dead ends: 3212 [2023-12-21 21:44:40,012 INFO L226 Difference]: Without dead ends: 2674 [2023-12-21 21:44:40,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 21:44:40,015 INFO L413 NwaCegarLoop]: 4220 mSDtfsCounter, 4524 mSDsluCounter, 8328 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4541 SdHoareTripleChecker+Valid, 12548 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:40,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4541 Valid, 12548 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:44:40,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2023-12-21 21:44:40,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2023-12-21 21:44:40,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2618 states have (on average 1.8055767761650114) internal successors, (4727), 2621 states have internal predecessors, (4727), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:44:40,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4810 transitions. [2023-12-21 21:44:40,093 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4810 transitions. Word has length 131 [2023-12-21 21:44:40,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:40,094 INFO L495 AbstractCegarLoop]: Abstraction has 2674 states and 4810 transitions. [2023-12-21 21:44:40,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:40,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4810 transitions. [2023-12-21 21:44:40,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:40,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:40,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:40,102 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 (9)] Forceful destruction successful, exit code 0 [2023-12-21 21:44:40,301 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 21:44:40,302 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:40,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:40,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1533278950, now seen corresponding path program 1 times [2023-12-21 21:44:40,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:40,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857998002] [2023-12-21 21:44:40,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:40,303 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 21:44:40,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:40,304 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 21:44:40,307 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 21:44:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:40,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:40,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:40,503 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 21:44:40,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:40,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:40,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857998002] [2023-12-21 21:44:40,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857998002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:40,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:40,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:40,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781519214] [2023-12-21 21:44:40,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:40,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:40,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:40,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:40,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:40,506 INFO L87 Difference]: Start difference. First operand 2674 states and 4810 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:40,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:40,910 INFO L93 Difference]: Finished difference Result 3212 states and 5643 transitions. [2023-12-21 21:44:40,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:44:40,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:40,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:40,927 INFO L225 Difference]: With dead ends: 3212 [2023-12-21 21:44:40,928 INFO L226 Difference]: Without dead ends: 2674 [2023-12-21 21:44:40,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 21:44:40,933 INFO L413 NwaCegarLoop]: 4217 mSDtfsCounter, 4518 mSDsluCounter, 8324 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4535 SdHoareTripleChecker+Valid, 12541 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:40,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4535 Valid, 12541 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:44:40,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2023-12-21 21:44:41,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2023-12-21 21:44:41,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2618 states have (on average 1.8029029793735676) internal successors, (4720), 2621 states have internal predecessors, (4720), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:44:41,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4803 transitions. [2023-12-21 21:44:41,016 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4803 transitions. Word has length 131 [2023-12-21 21:44:41,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:41,016 INFO L495 AbstractCegarLoop]: Abstraction has 2674 states and 4803 transitions. [2023-12-21 21:44:41,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:41,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4803 transitions. [2023-12-21 21:44:41,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:41,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:41,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:41,024 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 (10)] Ended with exit code 0 [2023-12-21 21:44:41,224 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 21:44:41,225 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:41,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:41,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1257043478, now seen corresponding path program 1 times [2023-12-21 21:44:41,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:41,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355225003] [2023-12-21 21:44:41,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:41,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:44:41,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:41,228 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 21:44:41,265 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 21:44:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:41,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:41,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:41,428 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 21:44:41,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:41,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:41,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355225003] [2023-12-21 21:44:41,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355225003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:41,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:41,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:41,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068952323] [2023-12-21 21:44:41,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:41,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:41,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:41,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:41,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:41,431 INFO L87 Difference]: Start difference. First operand 2674 states and 4803 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:41,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:41,896 INFO L93 Difference]: Finished difference Result 3212 states and 5629 transitions. [2023-12-21 21:44:41,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:44:41,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:41,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:41,903 INFO L225 Difference]: With dead ends: 3212 [2023-12-21 21:44:41,903 INFO L226 Difference]: Without dead ends: 2674 [2023-12-21 21:44:41,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 21:44:41,906 INFO L413 NwaCegarLoop]: 4214 mSDtfsCounter, 4512 mSDsluCounter, 8320 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4529 SdHoareTripleChecker+Valid, 12534 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:41,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4529 Valid, 12534 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:44:41,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2023-12-21 21:44:41,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2023-12-21 21:44:41,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2618 states have (on average 1.8002291825821237) internal successors, (4713), 2621 states have internal predecessors, (4713), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:44:41,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4796 transitions. [2023-12-21 21:44:41,966 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4796 transitions. Word has length 131 [2023-12-21 21:44:41,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:41,967 INFO L495 AbstractCegarLoop]: Abstraction has 2674 states and 4796 transitions. [2023-12-21 21:44:41,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:41,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4796 transitions. [2023-12-21 21:44:41,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:41,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:41,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:41,973 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 (11)] Ended with exit code 0 [2023-12-21 21:44:42,173 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 21:44:42,174 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:42,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:42,174 INFO L85 PathProgramCache]: Analyzing trace with hash -377222554, now seen corresponding path program 1 times [2023-12-21 21:44:42,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:42,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318831660] [2023-12-21 21:44:42,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:42,175 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 21:44:42,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:42,176 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 21:44:42,184 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 21:44:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:42,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:42,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:42,342 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 21:44:42,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:42,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:42,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318831660] [2023-12-21 21:44:42,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318831660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:42,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:42,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:42,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160962007] [2023-12-21 21:44:42,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:42,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:42,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:42,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:42,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:42,344 INFO L87 Difference]: Start difference. First operand 2674 states and 4796 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:42,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:42,860 INFO L93 Difference]: Finished difference Result 3342 states and 5827 transitions. [2023-12-21 21:44:42,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:44:42,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:42,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:42,867 INFO L225 Difference]: With dead ends: 3342 [2023-12-21 21:44:42,867 INFO L226 Difference]: Without dead ends: 2804 [2023-12-21 21:44:42,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 21:44:42,870 INFO L413 NwaCegarLoop]: 4212 mSDtfsCounter, 4592 mSDsluCounter, 8316 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4609 SdHoareTripleChecker+Valid, 12528 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:42,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4609 Valid, 12528 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:44:42,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2023-12-21 21:44:42,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2804. [2023-12-21 21:44:42,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2804 states, 2742 states have (on average 1.7826404084609775) internal successors, (4888), 2745 states have internal predecessors, (4888), 43 states have call successors, (43), 16 states have call predecessors, (43), 17 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-21 21:44:42,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 4975 transitions. [2023-12-21 21:44:42,931 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 4975 transitions. Word has length 131 [2023-12-21 21:44:42,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:42,931 INFO L495 AbstractCegarLoop]: Abstraction has 2804 states and 4975 transitions. [2023-12-21 21:44:42,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:42,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 4975 transitions. [2023-12-21 21:44:42,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:42,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:42,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:42,944 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 21:44:43,138 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 21:44:43,138 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:43,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:43,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2113075682, now seen corresponding path program 1 times [2023-12-21 21:44:43,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:43,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361614060] [2023-12-21 21:44:43,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:43,139 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 21:44:43,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:43,140 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 21:44:43,141 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 21:44:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:43,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:43,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:43,311 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 21:44:43,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:43,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:43,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361614060] [2023-12-21 21:44:43,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361614060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:43,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:43,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:43,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951329377] [2023-12-21 21:44:43,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:43,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:43,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:43,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:43,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:43,313 INFO L87 Difference]: Start difference. First operand 2804 states and 4975 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:43,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:43,781 INFO L93 Difference]: Finished difference Result 3602 states and 6185 transitions. [2023-12-21 21:44:43,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:44:43,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:43,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:43,788 INFO L225 Difference]: With dead ends: 3602 [2023-12-21 21:44:43,788 INFO L226 Difference]: Without dead ends: 2934 [2023-12-21 21:44:43,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 21:44:43,791 INFO L413 NwaCegarLoop]: 4209 mSDtfsCounter, 4586 mSDsluCounter, 8312 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4603 SdHoareTripleChecker+Valid, 12521 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:43,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4603 Valid, 12521 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:44:43,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2023-12-21 21:44:43,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 2934. [2023-12-21 21:44:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2934 states, 2866 states have (on average 1.7651779483600838) internal successors, (5059), 2869 states have internal predecessors, (5059), 45 states have call successors, (45), 20 states have call predecessors, (45), 21 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-21 21:44:43,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 5150 transitions. [2023-12-21 21:44:43,854 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 5150 transitions. Word has length 131 [2023-12-21 21:44:43,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:43,855 INFO L495 AbstractCegarLoop]: Abstraction has 2934 states and 5150 transitions. [2023-12-21 21:44:43,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:43,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 5150 transitions. [2023-12-21 21:44:43,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:43,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:43,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:43,867 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 21:44:44,061 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 21:44:44,062 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:44,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:44,062 INFO L85 PathProgramCache]: Analyzing trace with hash 9454695, now seen corresponding path program 1 times [2023-12-21 21:44:44,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:44,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116330133] [2023-12-21 21:44:44,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:44,063 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 21:44:44,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:44,064 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 21:44:44,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-21 21:44:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:44,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:44,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:44,256 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 21:44:44,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:44,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:44,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116330133] [2023-12-21 21:44:44,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116330133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:44,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:44,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:44,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939318605] [2023-12-21 21:44:44,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:44,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:44,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:44,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:44,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:44,258 INFO L87 Difference]: Start difference. First operand 2934 states and 5150 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:44,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:44,743 INFO L93 Difference]: Finished difference Result 3862 states and 6535 transitions. [2023-12-21 21:44:44,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:44:44,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:44,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:44,750 INFO L225 Difference]: With dead ends: 3862 [2023-12-21 21:44:44,750 INFO L226 Difference]: Without dead ends: 3064 [2023-12-21 21:44:44,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 21:44:44,754 INFO L413 NwaCegarLoop]: 4206 mSDtfsCounter, 4579 mSDsluCounter, 8308 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4596 SdHoareTripleChecker+Valid, 12514 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:44,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4596 Valid, 12514 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:44:44,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2023-12-21 21:44:44,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 3064. [2023-12-21 21:44:44,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 2990 states have (on average 1.7478260869565216) internal successors, (5226), 2993 states have internal predecessors, (5226), 47 states have call successors, (47), 24 states have call predecessors, (47), 25 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-21 21:44:44,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 5321 transitions. [2023-12-21 21:44:44,828 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 5321 transitions. Word has length 131 [2023-12-21 21:44:44,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:44,829 INFO L495 AbstractCegarLoop]: Abstraction has 3064 states and 5321 transitions. [2023-12-21 21:44:44,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:44,829 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 5321 transitions. [2023-12-21 21:44:44,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:44,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:44,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:44,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-21 21:44:45,039 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 21:44:45,039 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:45,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:45,040 INFO L85 PathProgramCache]: Analyzing trace with hash -854909758, now seen corresponding path program 1 times [2023-12-21 21:44:45,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:45,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182989084] [2023-12-21 21:44:45,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:45,041 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 21:44:45,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:45,042 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 21:44:45,053 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 21:44:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:45,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:45,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:45,223 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 21:44:45,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:45,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:45,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182989084] [2023-12-21 21:44:45,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182989084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:45,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:45,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:45,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588260508] [2023-12-21 21:44:45,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:45,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:45,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:45,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:45,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:45,225 INFO L87 Difference]: Start difference. First operand 3064 states and 5321 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:45,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:45,664 INFO L93 Difference]: Finished difference Result 4122 states and 6877 transitions. [2023-12-21 21:44:45,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:44:45,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:45,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:45,671 INFO L225 Difference]: With dead ends: 4122 [2023-12-21 21:44:45,671 INFO L226 Difference]: Without dead ends: 3194 [2023-12-21 21:44:45,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 21:44:45,674 INFO L413 NwaCegarLoop]: 4203 mSDtfsCounter, 4572 mSDsluCounter, 8304 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4589 SdHoareTripleChecker+Valid, 12507 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:45,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4589 Valid, 12507 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:44:45,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2023-12-21 21:44:45,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 3194. [2023-12-21 21:44:45,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 3114 states have (on average 1.7305716120745023) internal successors, (5389), 3117 states have internal predecessors, (5389), 49 states have call successors, (49), 28 states have call predecessors, (49), 29 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-21 21:44:45,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 5488 transitions. [2023-12-21 21:44:45,747 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 5488 transitions. Word has length 131 [2023-12-21 21:44:45,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:45,748 INFO L495 AbstractCegarLoop]: Abstraction has 3194 states and 5488 transitions. [2023-12-21 21:44:45,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:45,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 5488 transitions. [2023-12-21 21:44:45,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:45,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:45,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:45,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-21 21:44:45,957 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 21:44:45,957 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:45,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:45,958 INFO L85 PathProgramCache]: Analyzing trace with hash 176131140, now seen corresponding path program 1 times [2023-12-21 21:44:45,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:45,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521215804] [2023-12-21 21:44:45,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:45,958 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 21:44:45,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:45,960 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 21:44:45,963 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 21:44:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:46,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:46,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:46,140 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 21:44:46,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:46,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:46,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521215804] [2023-12-21 21:44:46,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521215804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:46,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:46,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:46,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842884752] [2023-12-21 21:44:46,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:46,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:46,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:46,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:46,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:46,142 INFO L87 Difference]: Start difference. First operand 3194 states and 5488 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:46,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:46,652 INFO L93 Difference]: Finished difference Result 4382 states and 7211 transitions. [2023-12-21 21:44:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:44:46,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:46,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:46,659 INFO L225 Difference]: With dead ends: 4382 [2023-12-21 21:44:46,659 INFO L226 Difference]: Without dead ends: 3324 [2023-12-21 21:44:46,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 21:44:46,663 INFO L413 NwaCegarLoop]: 4200 mSDtfsCounter, 4565 mSDsluCounter, 8300 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4582 SdHoareTripleChecker+Valid, 12500 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:46,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4582 Valid, 12500 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:44:46,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3324 states. [2023-12-21 21:44:46,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3324 to 3324. [2023-12-21 21:44:46,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3324 states, 3238 states have (on average 1.7134033353922173) internal successors, (5548), 3241 states have internal predecessors, (5548), 51 states have call successors, (51), 32 states have call predecessors, (51), 33 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2023-12-21 21:44:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 5651 transitions. [2023-12-21 21:44:46,744 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 5651 transitions. Word has length 131 [2023-12-21 21:44:46,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:46,744 INFO L495 AbstractCegarLoop]: Abstraction has 3324 states and 5651 transitions. [2023-12-21 21:44:46,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:46,745 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 5651 transitions. [2023-12-21 21:44:46,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:46,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:46,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:46,755 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 21:44:46,951 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 21:44:46,951 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:46,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:46,952 INFO L85 PathProgramCache]: Analyzing trace with hash -806498721, now seen corresponding path program 1 times [2023-12-21 21:44:46,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:46,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421679218] [2023-12-21 21:44:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:46,952 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 21:44:46,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:46,953 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 21:44:46,954 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 21:44:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:47,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:47,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:47,117 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 21:44:47,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:47,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:47,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421679218] [2023-12-21 21:44:47,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421679218] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:47,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:47,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:47,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666556300] [2023-12-21 21:44:47,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:47,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:47,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:47,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:47,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:47,119 INFO L87 Difference]: Start difference. First operand 3324 states and 5651 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:47,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:47,602 INFO L93 Difference]: Finished difference Result 4642 states and 7537 transitions. [2023-12-21 21:44:47,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:44:47,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:47,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:47,609 INFO L225 Difference]: With dead ends: 4642 [2023-12-21 21:44:47,609 INFO L226 Difference]: Without dead ends: 3454 [2023-12-21 21:44:47,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 21:44:47,614 INFO L413 NwaCegarLoop]: 4197 mSDtfsCounter, 4558 mSDsluCounter, 8296 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4575 SdHoareTripleChecker+Valid, 12493 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:47,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4575 Valid, 12493 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:44:47,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3454 states. [2023-12-21 21:44:47,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3454 to 3454. [2023-12-21 21:44:47,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3454 states, 3362 states have (on average 1.6963117192147532) internal successors, (5703), 3365 states have internal predecessors, (5703), 53 states have call successors, (53), 36 states have call predecessors, (53), 37 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2023-12-21 21:44:47,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 5810 transitions. [2023-12-21 21:44:47,698 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 5810 transitions. Word has length 131 [2023-12-21 21:44:47,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:47,699 INFO L495 AbstractCegarLoop]: Abstraction has 3454 states and 5810 transitions. [2023-12-21 21:44:47,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:47,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 5810 transitions. [2023-12-21 21:44:47,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:47,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:47,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:47,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-21 21:44:47,905 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 21:44:47,906 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:47,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:47,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1217274211, now seen corresponding path program 1 times [2023-12-21 21:44:47,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:47,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556526751] [2023-12-21 21:44:47,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:47,907 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 21:44:47,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:47,908 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 21:44:47,908 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 21:44:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:48,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:48,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:48,091 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 21:44:48,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:48,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:48,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556526751] [2023-12-21 21:44:48,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556526751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:48,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:48,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:48,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272634506] [2023-12-21 21:44:48,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:48,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:48,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:48,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:48,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:48,093 INFO L87 Difference]: Start difference. First operand 3454 states and 5810 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:48,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:48,539 INFO L93 Difference]: Finished difference Result 4902 states and 7855 transitions. [2023-12-21 21:44:48,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:44:48,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:48,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:48,544 INFO L225 Difference]: With dead ends: 4902 [2023-12-21 21:44:48,544 INFO L226 Difference]: Without dead ends: 3584 [2023-12-21 21:44:48,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 21:44:48,547 INFO L413 NwaCegarLoop]: 4194 mSDtfsCounter, 4551 mSDsluCounter, 8292 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4568 SdHoareTripleChecker+Valid, 12486 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:48,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4568 Valid, 12486 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:44:48,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2023-12-21 21:44:48,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 3584. [2023-12-21 21:44:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3584 states, 3486 states have (on average 1.6792885829030408) internal successors, (5854), 3489 states have internal predecessors, (5854), 55 states have call successors, (55), 40 states have call predecessors, (55), 41 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2023-12-21 21:44:48,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3584 states to 3584 states and 5965 transitions. [2023-12-21 21:44:48,641 INFO L78 Accepts]: Start accepts. Automaton has 3584 states and 5965 transitions. Word has length 131 [2023-12-21 21:44:48,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:48,642 INFO L495 AbstractCegarLoop]: Abstraction has 3584 states and 5965 transitions. [2023-12-21 21:44:48,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:48,642 INFO L276 IsEmpty]: Start isEmpty. Operand 3584 states and 5965 transitions. [2023-12-21 21:44:48,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:48,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:48,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:48,651 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 21:44:48,848 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 21:44:48,850 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:48,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:48,851 INFO L85 PathProgramCache]: Analyzing trace with hash -554304194, now seen corresponding path program 1 times [2023-12-21 21:44:48,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:48,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466736926] [2023-12-21 21:44:48,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:48,851 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 21:44:48,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:48,852 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 21:44:48,890 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 21:44:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:48,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:48,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:49,046 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 21:44:49,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:49,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:49,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466736926] [2023-12-21 21:44:49,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466736926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:49,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:49,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:49,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106104659] [2023-12-21 21:44:49,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:49,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:49,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:49,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:49,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:49,050 INFO L87 Difference]: Start difference. First operand 3584 states and 5965 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:49,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:49,609 INFO L93 Difference]: Finished difference Result 5162 states and 8165 transitions. [2023-12-21 21:44:49,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:44:49,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:49,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:49,618 INFO L225 Difference]: With dead ends: 5162 [2023-12-21 21:44:49,618 INFO L226 Difference]: Without dead ends: 3714 [2023-12-21 21:44:49,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 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 21:44:49,623 INFO L413 NwaCegarLoop]: 4191 mSDtfsCounter, 4543 mSDsluCounter, 8288 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4560 SdHoareTripleChecker+Valid, 12479 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:49,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4560 Valid, 12479 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:44:49,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2023-12-21 21:44:49,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3714. [2023-12-21 21:44:49,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3714 states, 3610 states have (on average 1.6623268698060942) internal successors, (6001), 3613 states have internal predecessors, (6001), 57 states have call successors, (57), 44 states have call predecessors, (57), 45 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2023-12-21 21:44:49,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3714 states to 3714 states and 6116 transitions. [2023-12-21 21:44:49,724 INFO L78 Accepts]: Start accepts. Automaton has 3714 states and 6116 transitions. Word has length 131 [2023-12-21 21:44:49,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:49,724 INFO L495 AbstractCegarLoop]: Abstraction has 3714 states and 6116 transitions. [2023-12-21 21:44:49,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 21:44:49,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3714 states and 6116 transitions. [2023-12-21 21:44:49,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 21:44:49,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:49,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:49,733 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 21:44:49,933 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 21:44:49,933 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:49,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:49,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1147559207, now seen corresponding path program 1 times [2023-12-21 21:44:49,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:49,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182070390] [2023-12-21 21:44:49,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:49,934 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 21:44:49,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:49,936 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 21:44:49,977 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 21:44:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:50,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:44:50,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:50,209 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 21:44:50,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:50,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:50,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182070390] [2023-12-21 21:44:50,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182070390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:50,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:50,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:44:50,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200245145] [2023-12-21 21:44:50,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:50,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:44:50,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:50,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:44:50,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:44:50,211 INFO L87 Difference]: Start difference. First operand 3714 states and 6116 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 21:44:50,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:50,539 INFO L93 Difference]: Finished difference Result 6841 states and 10369 transitions. [2023-12-21 21:44:50,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:44:50,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 131 [2023-12-21 21:44:50,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:50,548 INFO L225 Difference]: With dead ends: 6841 [2023-12-21 21:44:50,548 INFO L226 Difference]: Without dead ends: 5264 [2023-12-21 21:44:50,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 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 21:44:50,552 INFO L413 NwaCegarLoop]: 4372 mSDtfsCounter, 4220 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4220 SdHoareTripleChecker+Valid, 4700 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:50,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4220 Valid, 4700 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:44:50,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5264 states. [2023-12-21 21:44:50,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5264 to 5262. [2023-12-21 21:44:50,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5262 states, 5060 states have (on average 1.5717391304347825) internal successors, (7953), 5066 states have internal predecessors, (7953), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:44:50,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5262 states to 5262 states and 8175 transitions. [2023-12-21 21:44:50,726 INFO L78 Accepts]: Start accepts. Automaton has 5262 states and 8175 transitions. Word has length 131 [2023-12-21 21:44:50,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:50,727 INFO L495 AbstractCegarLoop]: Abstraction has 5262 states and 8175 transitions. [2023-12-21 21:44:50,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 21:44:50,727 INFO L276 IsEmpty]: Start isEmpty. Operand 5262 states and 8175 transitions. [2023-12-21 21:44:50,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 21:44:50,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:50,731 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 21:44:50,736 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 21:44:50,936 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 21:44:50,937 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:50,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:50,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1374479285, now seen corresponding path program 1 times [2023-12-21 21:44:50,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:50,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623710584] [2023-12-21 21:44:50,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:50,938 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 21:44:50,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:50,939 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 21:44:50,940 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 21:44:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:51,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:51,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-21 21:44:51,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:51,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:51,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623710584] [2023-12-21 21:44:51,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623710584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:51,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:51,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:51,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823758305] [2023-12-21 21:44:51,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:51,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:44:51,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:51,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:44:51,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:44:51,110 INFO L87 Difference]: Start difference. First operand 5262 states and 8175 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 21:44:51,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:51,356 INFO L93 Difference]: Finished difference Result 9431 states and 13870 transitions. [2023-12-21 21:44:51,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:44:51,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 211 [2023-12-21 21:44:51,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:51,371 INFO L225 Difference]: With dead ends: 9431 [2023-12-21 21:44:51,371 INFO L226 Difference]: Without dead ends: 6306 [2023-12-21 21:44:51,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 208 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 21:44:51,383 INFO L413 NwaCegarLoop]: 4322 mSDtfsCounter, 83 mSDsluCounter, 8639 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 12961 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:51,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 12961 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:44:51,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6306 states. [2023-12-21 21:44:51,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6306 to 5298. [2023-12-21 21:44:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5298 states, 5096 states have (on average 1.5641679748822606) internal successors, (7971), 5102 states have internal predecessors, (7971), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:44:51,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5298 states to 5298 states and 8193 transitions. [2023-12-21 21:44:51,573 INFO L78 Accepts]: Start accepts. Automaton has 5298 states and 8193 transitions. Word has length 211 [2023-12-21 21:44:51,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:51,573 INFO L495 AbstractCegarLoop]: Abstraction has 5298 states and 8193 transitions. [2023-12-21 21:44:51,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 21:44:51,573 INFO L276 IsEmpty]: Start isEmpty. Operand 5298 states and 8193 transitions. [2023-12-21 21:44:51,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 21:44:51,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:51,577 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 21:44:51,587 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 21:44:51,783 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 21:44:51,784 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:51,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:51,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1351929927, now seen corresponding path program 1 times [2023-12-21 21:44:51,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:51,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474562630] [2023-12-21 21:44:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:51,785 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 21:44:51,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:51,786 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 21:44:51,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-21 21:44:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:51,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:51,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:51,976 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-21 21:44:51,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:51,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:51,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474562630] [2023-12-21 21:44:51,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474562630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:51,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:51,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:51,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602054404] [2023-12-21 21:44:51,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:51,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:44:51,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:51,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:44:51,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:44:51,978 INFO L87 Difference]: Start difference. First operand 5298 states and 8193 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 21:44:52,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:52,225 INFO L93 Difference]: Finished difference Result 8667 states and 12763 transitions. [2023-12-21 21:44:52,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:44:52,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 211 [2023-12-21 21:44:52,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:52,236 INFO L225 Difference]: With dead ends: 8667 [2023-12-21 21:44:52,236 INFO L226 Difference]: Without dead ends: 5506 [2023-12-21 21:44:52,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 208 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 21:44:52,245 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 74 mSDsluCounter, 8628 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 12948 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:52,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 12948 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:44:52,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5506 states. [2023-12-21 21:44:52,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5506 to 5306. [2023-12-21 21:44:52,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5306 states, 5104 states have (on average 1.557014106583072) internal successors, (7947), 5110 states have internal predecessors, (7947), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:44:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5306 states to 5306 states and 8169 transitions. [2023-12-21 21:44:52,583 INFO L78 Accepts]: Start accepts. Automaton has 5306 states and 8169 transitions. Word has length 211 [2023-12-21 21:44:52,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:52,583 INFO L495 AbstractCegarLoop]: Abstraction has 5306 states and 8169 transitions. [2023-12-21 21:44:52,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 21:44:52,584 INFO L276 IsEmpty]: Start isEmpty. Operand 5306 states and 8169 transitions. [2023-12-21 21:44:52,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 21:44:52,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:52,588 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 21:44:52,596 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 21:44:52,793 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 21:44:52,794 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:52,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:52,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1788448459, now seen corresponding path program 1 times [2023-12-21 21:44:52,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:52,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941617991] [2023-12-21 21:44:52,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:52,795 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:44:52,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:52,796 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 21:44:52,797 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 21:44:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:52,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:52,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:52,970 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 21:44:52,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:52,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:52,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941617991] [2023-12-21 21:44:52,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941617991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:52,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:52,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:52,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969118935] [2023-12-21 21:44:52,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:52,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:44:52,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:52,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:44:52,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:44:52,972 INFO L87 Difference]: Start difference. First operand 5306 states and 8169 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 21:44:53,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:53,177 INFO L93 Difference]: Finished difference Result 8659 states and 12683 transitions. [2023-12-21 21:44:53,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:44:53,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 211 [2023-12-21 21:44:53,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:53,187 INFO L225 Difference]: With dead ends: 8659 [2023-12-21 21:44:53,187 INFO L226 Difference]: Without dead ends: 5490 [2023-12-21 21:44:53,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 208 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 21:44:53,195 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 65 mSDsluCounter, 8629 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 12949 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:53,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 12949 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:44:53,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5490 states. [2023-12-21 21:44:53,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5490 to 5314. [2023-12-21 21:44:53,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5314 states, 5112 states have (on average 1.5498826291079812) internal successors, (7923), 5118 states have internal predecessors, (7923), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:44:53,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5314 states to 5314 states and 8145 transitions. [2023-12-21 21:44:53,365 INFO L78 Accepts]: Start accepts. Automaton has 5314 states and 8145 transitions. Word has length 211 [2023-12-21 21:44:53,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:53,365 INFO L495 AbstractCegarLoop]: Abstraction has 5314 states and 8145 transitions. [2023-12-21 21:44:53,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 21:44:53,366 INFO L276 IsEmpty]: Start isEmpty. Operand 5314 states and 8145 transitions. [2023-12-21 21:44:53,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 21:44:53,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:53,369 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 21:44:53,379 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 21:44:53,575 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 21:44:53,575 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:53,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:53,576 INFO L85 PathProgramCache]: Analyzing trace with hash 2037435847, now seen corresponding path program 1 times [2023-12-21 21:44:53,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:53,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371961157] [2023-12-21 21:44:53,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:53,576 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 21:44:53,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:53,578 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 21:44:53,579 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 21:44:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:53,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:53,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 21:44:53,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:53,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:53,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371961157] [2023-12-21 21:44:53,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371961157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:53,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:53,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:53,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896382712] [2023-12-21 21:44:53,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:53,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:44:53,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:53,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:44:53,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:44:53,731 INFO L87 Difference]: Start difference. First operand 5314 states and 8145 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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 21:44:53,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:53,969 INFO L93 Difference]: Finished difference Result 8651 states and 12603 transitions. [2023-12-21 21:44:53,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:44:53,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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 211 [2023-12-21 21:44:53,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:53,978 INFO L225 Difference]: With dead ends: 8651 [2023-12-21 21:44:53,979 INFO L226 Difference]: Without dead ends: 5474 [2023-12-21 21:44:53,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 208 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 21:44:53,986 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 56 mSDsluCounter, 8630 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 12950 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:53,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 12950 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:44:53,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5474 states. [2023-12-21 21:44:54,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5474 to 5322. [2023-12-21 21:44:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5322 states, 5120 states have (on average 1.5427734375) internal successors, (7899), 5126 states have internal predecessors, (7899), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:44:54,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5322 states to 5322 states and 8121 transitions. [2023-12-21 21:44:54,153 INFO L78 Accepts]: Start accepts. Automaton has 5322 states and 8121 transitions. Word has length 211 [2023-12-21 21:44:54,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:54,154 INFO L495 AbstractCegarLoop]: Abstraction has 5322 states and 8121 transitions. [2023-12-21 21:44:54,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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 21:44:54,154 INFO L276 IsEmpty]: Start isEmpty. Operand 5322 states and 8121 transitions. [2023-12-21 21:44:54,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 21:44:54,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:54,159 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 21:44:54,167 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 21:44:54,365 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 21:44:54,365 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:54,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:54,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1150624075, now seen corresponding path program 1 times [2023-12-21 21:44:54,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:54,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975188137] [2023-12-21 21:44:54,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:54,366 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 21:44:54,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:54,367 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 21:44:54,368 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 21:44:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:54,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:54,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-21 21:44:54,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:54,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:54,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975188137] [2023-12-21 21:44:54,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975188137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:54,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:54,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:54,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899735948] [2023-12-21 21:44:54,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:54,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:44:54,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:54,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:44:54,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:44:54,536 INFO L87 Difference]: Start difference. First operand 5322 states and 8121 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 21:44:54,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:54,858 INFO L93 Difference]: Finished difference Result 8619 states and 12491 transitions. [2023-12-21 21:44:54,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:44:54,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 211 [2023-12-21 21:44:54,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:54,865 INFO L225 Difference]: With dead ends: 8619 [2023-12-21 21:44:54,865 INFO L226 Difference]: Without dead ends: 5434 [2023-12-21 21:44:54,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 208 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 21:44:54,869 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 38 mSDsluCounter, 8632 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 12952 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:54,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 12952 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:44:54,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5434 states. [2023-12-21 21:44:55,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5434 to 5330. [2023-12-21 21:44:55,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 5128 states have (on average 1.5356864274570983) internal successors, (7875), 5134 states have internal predecessors, (7875), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:44:55,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 8097 transitions. [2023-12-21 21:44:55,028 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 8097 transitions. Word has length 211 [2023-12-21 21:44:55,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:55,028 INFO L495 AbstractCegarLoop]: Abstraction has 5330 states and 8097 transitions. [2023-12-21 21:44:55,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 21:44:55,028 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 8097 transitions. [2023-12-21 21:44:55,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 21:44:55,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:55,031 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, 2, 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] [2023-12-21 21:44:55,037 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 (25)] Ended with exit code 0 [2023-12-21 21:44:55,237 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 21:44:55,237 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:55,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:55,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1033942577, now seen corresponding path program 1 times [2023-12-21 21:44:55,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:55,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371637105] [2023-12-21 21:44:55,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:55,238 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 21:44:55,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:55,239 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 21:44:55,242 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 21:44:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:55,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:55,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 21:44:55,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:55,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:55,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371637105] [2023-12-21 21:44:55,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371637105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:55,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:55,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:55,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835193888] [2023-12-21 21:44:55,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:55,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:44:55,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:55,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:44:55,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:44:55,396 INFO L87 Difference]: Start difference. First operand 5330 states and 8097 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 21:44:55,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:55,629 INFO L93 Difference]: Finished difference Result 8611 states and 12411 transitions. [2023-12-21 21:44:55,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:44:55,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 211 [2023-12-21 21:44:55,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:55,639 INFO L225 Difference]: With dead ends: 8611 [2023-12-21 21:44:55,639 INFO L226 Difference]: Without dead ends: 5418 [2023-12-21 21:44:55,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 208 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 21:44:55,645 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 29 mSDsluCounter, 8633 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 12953 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:55,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 12953 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:44:55,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5418 states. [2023-12-21 21:44:55,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5418 to 5338. [2023-12-21 21:44:55,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5136 states have (on average 1.528621495327103) internal successors, (7851), 5142 states have internal predecessors, (7851), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:44:55,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 8073 transitions. [2023-12-21 21:44:55,774 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 8073 transitions. Word has length 211 [2023-12-21 21:44:55,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:55,774 INFO L495 AbstractCegarLoop]: Abstraction has 5338 states and 8073 transitions. [2023-12-21 21:44:55,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 21:44:55,774 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 8073 transitions. [2023-12-21 21:44:55,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 21:44:55,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:55,778 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 21:44:55,784 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 21:44:55,983 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 21:44:55,983 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:55,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:55,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1312218827, now seen corresponding path program 1 times [2023-12-21 21:44:55,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:55,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302665790] [2023-12-21 21:44:55,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:55,984 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 21:44:55,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:55,985 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 21:44:55,986 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 21:44:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:56,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:56,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:56,147 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 21:44:56,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:56,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:56,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302665790] [2023-12-21 21:44:56,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302665790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:56,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:56,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:56,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274699280] [2023-12-21 21:44:56,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:56,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:44:56,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:56,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:44:56,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:44:56,150 INFO L87 Difference]: Start difference. First operand 5338 states and 8073 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 21:44:56,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:56,349 INFO L93 Difference]: Finished difference Result 8603 states and 12331 transitions. [2023-12-21 21:44:56,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:44:56,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 211 [2023-12-21 21:44:56,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:56,358 INFO L225 Difference]: With dead ends: 8603 [2023-12-21 21:44:56,358 INFO L226 Difference]: Without dead ends: 5402 [2023-12-21 21:44:56,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 208 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 21:44:56,364 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 20 mSDsluCounter, 8634 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 12954 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:56,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 12954 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:44:56,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5402 states. [2023-12-21 21:44:56,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5402 to 5346. [2023-12-21 21:44:56,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5346 states, 5144 states have (on average 1.5215785381026439) internal successors, (7827), 5150 states have internal predecessors, (7827), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:44:56,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5346 states to 5346 states and 8049 transitions. [2023-12-21 21:44:56,604 INFO L78 Accepts]: Start accepts. Automaton has 5346 states and 8049 transitions. Word has length 211 [2023-12-21 21:44:56,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:56,604 INFO L495 AbstractCegarLoop]: Abstraction has 5346 states and 8049 transitions. [2023-12-21 21:44:56,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 21:44:56,604 INFO L276 IsEmpty]: Start isEmpty. Operand 5346 states and 8049 transitions. [2023-12-21 21:44:56,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 21:44:56,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:56,607 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 21:44:56,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-12-21 21:44:56,812 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 21:44:56,813 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:56,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:56,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1190992975, now seen corresponding path program 1 times [2023-12-21 21:44:56,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:56,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900954533] [2023-12-21 21:44:56,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:56,814 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 21:44:56,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:56,815 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 21:44:56,816 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 21:44:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:56,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:56,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 21:44:56,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:56,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:56,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900954533] [2023-12-21 21:44:56,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900954533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:56,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:56,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:56,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512005641] [2023-12-21 21:44:56,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:56,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:44:56,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:56,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:44:56,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:44:56,963 INFO L87 Difference]: Start difference. First operand 5346 states and 8049 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 21:44:57,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:57,205 INFO L93 Difference]: Finished difference Result 8915 states and 12674 transitions. [2023-12-21 21:44:57,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:44:57,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 211 [2023-12-21 21:44:57,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:57,216 INFO L225 Difference]: With dead ends: 8915 [2023-12-21 21:44:57,216 INFO L226 Difference]: Without dead ends: 5706 [2023-12-21 21:44:57,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 208 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 21:44:57,222 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 11 mSDsluCounter, 8635 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 12955 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:57,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 12955 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:44:57,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5706 states. [2023-12-21 21:44:57,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5706 to 5418. [2023-12-21 21:44:57,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5216 states have (on average 1.5143788343558282) internal successors, (7899), 5222 states have internal predecessors, (7899), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:44:57,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 8121 transitions. [2023-12-21 21:44:57,389 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 8121 transitions. Word has length 211 [2023-12-21 21:44:57,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:57,390 INFO L495 AbstractCegarLoop]: Abstraction has 5418 states and 8121 transitions. [2023-12-21 21:44:57,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 21:44:57,390 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 8121 transitions. [2023-12-21 21:44:57,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 21:44:57,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:57,393 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 21:44:57,401 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 21:44:57,598 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 21:44:57,599 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:57,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:57,599 INFO L85 PathProgramCache]: Analyzing trace with hash 366967883, now seen corresponding path program 1 times [2023-12-21 21:44:57,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:57,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551364547] [2023-12-21 21:44:57,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:57,600 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 21:44:57,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:57,601 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 21:44:57,602 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 21:44:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:57,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:44:57,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:57,759 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 21:44:57,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:57,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:57,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551364547] [2023-12-21 21:44:57,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551364547] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:57,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:57,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:57,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043054854] [2023-12-21 21:44:57,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:57,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:44:57,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:57,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:44:57,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:44:57,762 INFO L87 Difference]: Start difference. First operand 5418 states and 8121 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 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 21:44:57,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:57,970 INFO L93 Difference]: Finished difference Result 8715 states and 12359 transitions. [2023-12-21 21:44:57,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:44:57,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 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 211 [2023-12-21 21:44:57,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:57,977 INFO L225 Difference]: With dead ends: 8715 [2023-12-21 21:44:57,977 INFO L226 Difference]: Without dead ends: 5434 [2023-12-21 21:44:57,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 208 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 21:44:57,981 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 2 mSDsluCounter, 8635 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12955 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:57,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12955 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:44:57,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5434 states. [2023-12-21 21:44:58,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5434 to 5426. [2023-12-21 21:44:58,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5426 states, 5224 states have (on average 1.5074655436447166) internal successors, (7875), 5230 states have internal predecessors, (7875), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:44:58,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5426 states to 5426 states and 8097 transitions. [2023-12-21 21:44:58,114 INFO L78 Accepts]: Start accepts. Automaton has 5426 states and 8097 transitions. Word has length 211 [2023-12-21 21:44:58,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:58,114 INFO L495 AbstractCegarLoop]: Abstraction has 5426 states and 8097 transitions. [2023-12-21 21:44:58,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 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 21:44:58,114 INFO L276 IsEmpty]: Start isEmpty. Operand 5426 states and 8097 transitions. [2023-12-21 21:44:58,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 21:44:58,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:58,116 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 21:44:58,120 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 21:44:58,317 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 21:44:58,317 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:58,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:58,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1556614863, now seen corresponding path program 1 times [2023-12-21 21:44:58,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:58,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820412868] [2023-12-21 21:44:58,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:58,318 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 21:44:58,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:58,319 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 21:44:58,319 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 21:44:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:58,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:44:58,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 21:44:58,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:58,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:58,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820412868] [2023-12-21 21:44:58,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820412868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:58,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:58,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:58,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036184778] [2023-12-21 21:44:58,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:58,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:58,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:58,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:58,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:58,588 INFO L87 Difference]: Start difference. First operand 5426 states and 8097 transitions. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:44:59,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:44:59,134 INFO L93 Difference]: Finished difference Result 8716 states and 12222 transitions. [2023-12-21 21:44:59,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:44:59,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 211 [2023-12-21 21:44:59,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:44:59,142 INFO L225 Difference]: With dead ends: 8716 [2023-12-21 21:44:59,143 INFO L226 Difference]: Without dead ends: 5426 [2023-12-21 21:44:59,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 207 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 21:44:59,146 INFO L413 NwaCegarLoop]: 4187 mSDtfsCounter, 4401 mSDsluCounter, 8284 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4417 SdHoareTripleChecker+Valid, 12471 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:44:59,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4417 Valid, 12471 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:44:59,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5426 states. [2023-12-21 21:44:59,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5426 to 5426. [2023-12-21 21:44:59,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5426 states, 5224 states have (on average 1.5047856049004593) internal successors, (7861), 5230 states have internal predecessors, (7861), 110 states have call successors, (110), 88 states have call predecessors, (110), 90 states have return successors, (112), 108 states have call predecessors, (112), 110 states have call successors, (112) [2023-12-21 21:44:59,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5426 states to 5426 states and 8083 transitions. [2023-12-21 21:44:59,284 INFO L78 Accepts]: Start accepts. Automaton has 5426 states and 8083 transitions. Word has length 211 [2023-12-21 21:44:59,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:44:59,284 INFO L495 AbstractCegarLoop]: Abstraction has 5426 states and 8083 transitions. [2023-12-21 21:44:59,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:44:59,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5426 states and 8083 transitions. [2023-12-21 21:44:59,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 21:44:59,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:44:59,287 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 21:44:59,291 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 21:44:59,487 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 21:44:59,487 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:44:59,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:44:59,488 INFO L85 PathProgramCache]: Analyzing trace with hash -809420207, now seen corresponding path program 1 times [2023-12-21 21:44:59,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:44:59,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818916887] [2023-12-21 21:44:59,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:44:59,488 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 21:44:59,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:44:59,489 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 21:44:59,490 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 21:44:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:44:59,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:44:59,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:44:59,742 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 21:44:59,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:44:59,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:44:59,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818916887] [2023-12-21 21:44:59,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818916887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:44:59,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:44:59,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:44:59,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578399774] [2023-12-21 21:44:59,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:44:59,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:44:59,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:44:59,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:44:59,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:44:59,745 INFO L87 Difference]: Start difference. First operand 5426 states and 8083 transitions. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:45:00,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:00,378 INFO L93 Difference]: Finished difference Result 9070 states and 12643 transitions. [2023-12-21 21:45:00,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:45:00,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 211 [2023-12-21 21:45:00,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:00,386 INFO L225 Difference]: With dead ends: 9070 [2023-12-21 21:45:00,386 INFO L226 Difference]: Without dead ends: 5780 [2023-12-21 21:45:00,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 21:45:00,390 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 4530 mSDsluCounter, 8280 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4546 SdHoareTripleChecker+Valid, 12466 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:00,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4546 Valid, 12466 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 21:45:00,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5780 states. [2023-12-21 21:45:00,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5780 to 5660. [2023-12-21 21:45:00,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5660 states, 5446 states have (on average 1.4849430774880645) internal successors, (8087), 5452 states have internal predecessors, (8087), 114 states have call successors, (114), 96 states have call predecessors, (114), 98 states have return successors, (116), 112 states have call predecessors, (116), 114 states have call successors, (116) [2023-12-21 21:45:00,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5660 states to 5660 states and 8317 transitions. [2023-12-21 21:45:00,529 INFO L78 Accepts]: Start accepts. Automaton has 5660 states and 8317 transitions. Word has length 211 [2023-12-21 21:45:00,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:00,529 INFO L495 AbstractCegarLoop]: Abstraction has 5660 states and 8317 transitions. [2023-12-21 21:45:00,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:45:00,529 INFO L276 IsEmpty]: Start isEmpty. Operand 5660 states and 8317 transitions. [2023-12-21 21:45:00,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 21:45:00,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:00,531 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 21:45:00,536 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 21:45:00,732 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 21:45:00,732 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:00,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:00,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1343686611, now seen corresponding path program 1 times [2023-12-21 21:45:00,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:00,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508772641] [2023-12-21 21:45:00,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:00,733 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 21:45:00,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:00,734 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 21:45:00,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-21 21:45:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:00,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:45:00,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 21:45:01,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:01,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:01,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508772641] [2023-12-21 21:45:01,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508772641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:01,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:01,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:01,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588107399] [2023-12-21 21:45:01,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:01,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:45:01,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:01,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:45:01,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:45:01,033 INFO L87 Difference]: Start difference. First operand 5660 states and 8317 transitions. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:45:01,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:01,685 INFO L93 Difference]: Finished difference Result 9398 states and 12965 transitions. [2023-12-21 21:45:01,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:45:01,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 211 [2023-12-21 21:45:01,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:01,693 INFO L225 Difference]: With dead ends: 9398 [2023-12-21 21:45:01,694 INFO L226 Difference]: Without dead ends: 5874 [2023-12-21 21:45:01,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 21:45:01,697 INFO L413 NwaCegarLoop]: 4183 mSDtfsCounter, 4456 mSDsluCounter, 8276 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4472 SdHoareTripleChecker+Valid, 12459 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:01,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4472 Valid, 12459 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:01,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2023-12-21 21:45:01,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 5834. [2023-12-21 21:45:01,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5834 states, 5616 states have (on average 1.462428774928775) internal successors, (8213), 5622 states have internal predecessors, (8213), 114 states have call successors, (114), 100 states have call predecessors, (114), 102 states have return successors, (116), 112 states have call predecessors, (116), 114 states have call successors, (116) [2023-12-21 21:45:01,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 8443 transitions. [2023-12-21 21:45:01,873 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 8443 transitions. Word has length 211 [2023-12-21 21:45:01,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:01,873 INFO L495 AbstractCegarLoop]: Abstraction has 5834 states and 8443 transitions. [2023-12-21 21:45:01,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:45:01,874 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 8443 transitions. [2023-12-21 21:45:01,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 21:45:01,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:01,877 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 21:45:01,883 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 21:45:02,082 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 21:45:02,083 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:02,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:02,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1920239787, now seen corresponding path program 1 times [2023-12-21 21:45:02,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:02,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771035380] [2023-12-21 21:45:02,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:02,084 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 21:45:02,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:02,085 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 21:45:02,085 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 21:45:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:02,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:45:02,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:02,426 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-21 21:45:02,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:02,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:02,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771035380] [2023-12-21 21:45:02,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771035380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:02,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:02,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:02,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934493337] [2023-12-21 21:45:02,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:02,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:45:02,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:02,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:45:02,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:45:02,428 INFO L87 Difference]: Start difference. First operand 5834 states and 8443 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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 21:45:03,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:03,062 INFO L93 Difference]: Finished difference Result 13120 states and 17223 transitions. [2023-12-21 21:45:03,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:45:03,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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 211 [2023-12-21 21:45:03,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:03,079 INFO L225 Difference]: With dead ends: 13120 [2023-12-21 21:45:03,079 INFO L226 Difference]: Without dead ends: 9424 [2023-12-21 21:45:03,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 209 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 21:45:03,090 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 4459 mSDsluCounter, 4535 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4463 SdHoareTripleChecker+Valid, 8923 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:03,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4463 Valid, 8923 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:03,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9424 states. [2023-12-21 21:45:03,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9424 to 9422. [2023-12-21 21:45:03,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9422 states, 8997 states have (on average 1.365455151717239) internal successors, (12285), 9012 states have internal predecessors, (12285), 219 states have call successors, (219), 192 states have call predecessors, (219), 204 states have return successors, (243), 219 states have call predecessors, (243), 219 states have call successors, (243) [2023-12-21 21:45:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9422 states to 9422 states and 12747 transitions. [2023-12-21 21:45:03,443 INFO L78 Accepts]: Start accepts. Automaton has 9422 states and 12747 transitions. Word has length 211 [2023-12-21 21:45:03,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:03,443 INFO L495 AbstractCegarLoop]: Abstraction has 9422 states and 12747 transitions. [2023-12-21 21:45:03,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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 21:45:03,443 INFO L276 IsEmpty]: Start isEmpty. Operand 9422 states and 12747 transitions. [2023-12-21 21:45:03,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-21 21:45:03,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:03,447 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 21:45:03,452 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 (33)] Ended with exit code 0 [2023-12-21 21:45:03,648 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 21:45:03,648 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:03,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:03,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1506800147, now seen corresponding path program 1 times [2023-12-21 21:45:03,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:03,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413493183] [2023-12-21 21:45:03,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:03,649 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 21:45:03,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:03,650 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 21:45:03,658 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 21:45:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:03,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:45:03,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-21 21:45:03,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:03,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:03,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413493183] [2023-12-21 21:45:03,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413493183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:03,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:03,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:45:03,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840529938] [2023-12-21 21:45:03,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:03,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:45:03,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:03,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:45:03,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:45:03,819 INFO L87 Difference]: Start difference. First operand 9422 states and 12747 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 21:45:04,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:04,091 INFO L93 Difference]: Finished difference Result 16694 states and 21484 transitions. [2023-12-21 21:45:04,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:45:04,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 211 [2023-12-21 21:45:04,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:04,105 INFO L225 Difference]: With dead ends: 16694 [2023-12-21 21:45:04,105 INFO L226 Difference]: Without dead ends: 9410 [2023-12-21 21:45:04,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 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 21:45:04,115 INFO L413 NwaCegarLoop]: 4310 mSDtfsCounter, 382 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 8267 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:04,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 8267 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:45:04,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9410 states. [2023-12-21 21:45:04,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9410 to 9410. [2023-12-21 21:45:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9410 states, 8988 states have (on average 1.3649310191366266) internal successors, (12268), 9002 states have internal predecessors, (12268), 216 states have call successors, (216), 192 states have call predecessors, (216), 204 states have return successors, (240), 216 states have call predecessors, (240), 216 states have call successors, (240) [2023-12-21 21:45:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9410 states to 9410 states and 12724 transitions. [2023-12-21 21:45:04,467 INFO L78 Accepts]: Start accepts. Automaton has 9410 states and 12724 transitions. Word has length 211 [2023-12-21 21:45:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:04,467 INFO L495 AbstractCegarLoop]: Abstraction has 9410 states and 12724 transitions. [2023-12-21 21:45:04,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 21:45:04,467 INFO L276 IsEmpty]: Start isEmpty. Operand 9410 states and 12724 transitions. [2023-12-21 21:45:04,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-12-21 21:45:04,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:04,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 21:45:04,475 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 21:45:04,671 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 21:45:04,671 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:04,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:04,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1491477168, now seen corresponding path program 1 times [2023-12-21 21:45:04,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:04,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660507344] [2023-12-21 21:45:04,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:04,672 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 21:45:04,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:04,673 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 21:45:04,674 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 21:45:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:04,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:45:04,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-21 21:45:05,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:05,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:05,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660507344] [2023-12-21 21:45:05,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660507344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:05,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:05,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:05,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364695163] [2023-12-21 21:45:05,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:05,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:45:05,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:05,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:45:05,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:45:05,045 INFO L87 Difference]: Start difference. First operand 9410 states and 12724 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 21:45:05,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:05,844 INFO L93 Difference]: Finished difference Result 23533 states and 29690 transitions. [2023-12-21 21:45:05,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:45:05,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 213 [2023-12-21 21:45:05,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:05,881 INFO L225 Difference]: With dead ends: 23533 [2023-12-21 21:45:05,881 INFO L226 Difference]: Without dead ends: 16261 [2023-12-21 21:45:05,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 211 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 21:45:05,899 INFO L413 NwaCegarLoop]: 4371 mSDtfsCounter, 4454 mSDsluCounter, 4517 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4459 SdHoareTripleChecker+Valid, 8888 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:05,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4459 Valid, 8888 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:45:05,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16261 states. [2023-12-21 21:45:06,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16261 to 16259. [2023-12-21 21:45:06,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16259 states, 15442 states have (on average 1.2971117730863877) internal successors, (20030), 15473 states have internal predecessors, (20030), 415 states have call successors, (415), 368 states have call predecessors, (415), 400 states have return successors, (483), 419 states have call predecessors, (483), 415 states have call successors, (483) [2023-12-21 21:45:06,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16259 states to 16259 states and 20928 transitions. [2023-12-21 21:45:06,536 INFO L78 Accepts]: Start accepts. Automaton has 16259 states and 20928 transitions. Word has length 213 [2023-12-21 21:45:06,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:06,536 INFO L495 AbstractCegarLoop]: Abstraction has 16259 states and 20928 transitions. [2023-12-21 21:45:06,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 21:45:06,536 INFO L276 IsEmpty]: Start isEmpty. Operand 16259 states and 20928 transitions. [2023-12-21 21:45:06,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-12-21 21:45:06,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:06,545 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 21:45:06,556 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 21:45:06,751 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 21:45:06,752 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:06,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:06,752 INFO L85 PathProgramCache]: Analyzing trace with hash 355532722, now seen corresponding path program 1 times [2023-12-21 21:45:06,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:06,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776786820] [2023-12-21 21:45:06,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:06,753 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 21:45:06,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:06,754 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 21:45:06,755 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 21:45:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:06,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:45:06,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-21 21:45:06,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:06,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:06,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776786820] [2023-12-21 21:45:06,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776786820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:06,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:06,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:45:06,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099602591] [2023-12-21 21:45:06,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:06,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:45:06,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:06,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:45:06,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:45:06,905 INFO L87 Difference]: Start difference. First operand 16259 states and 20928 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 21:45:07,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:07,565 INFO L93 Difference]: Finished difference Result 30369 states and 37849 transitions. [2023-12-21 21:45:07,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:45:07,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 213 [2023-12-21 21:45:07,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:07,590 INFO L225 Difference]: With dead ends: 30369 [2023-12-21 21:45:07,590 INFO L226 Difference]: Without dead ends: 16248 [2023-12-21 21:45:07,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 211 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 21:45:07,609 INFO L413 NwaCegarLoop]: 4309 mSDtfsCounter, 380 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 8266 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:07,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 8266 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:45:07,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16248 states. [2023-12-21 21:45:08,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16248 to 16248. [2023-12-21 21:45:08,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16248 states, 15434 states have (on average 1.2968122327329272) internal successors, (20015), 15464 states have internal predecessors, (20015), 412 states have call successors, (412), 368 states have call predecessors, (412), 400 states have return successors, (480), 416 states have call predecessors, (480), 412 states have call successors, (480) [2023-12-21 21:45:08,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16248 states to 16248 states and 20907 transitions. [2023-12-21 21:45:08,217 INFO L78 Accepts]: Start accepts. Automaton has 16248 states and 20907 transitions. Word has length 213 [2023-12-21 21:45:08,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:08,218 INFO L495 AbstractCegarLoop]: Abstraction has 16248 states and 20907 transitions. [2023-12-21 21:45:08,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 21:45:08,218 INFO L276 IsEmpty]: Start isEmpty. Operand 16248 states and 20907 transitions. [2023-12-21 21:45:08,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-12-21 21:45:08,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:08,224 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:45:08,229 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 (36)] Ended with exit code 0 [2023-12-21 21:45:08,425 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 21:45:08,425 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:08,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:08,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1869501547, now seen corresponding path program 1 times [2023-12-21 21:45:08,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:08,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855899795] [2023-12-21 21:45:08,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:08,426 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 21:45:08,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:08,427 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 21:45:08,428 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 21:45:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:08,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:45:08,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:08,751 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-21 21:45:08,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:08,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:08,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855899795] [2023-12-21 21:45:08,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855899795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:08,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:08,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:08,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281029954] [2023-12-21 21:45:08,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:08,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:45:08,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:08,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:45:08,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:45:08,753 INFO L87 Difference]: Start difference. First operand 16248 states and 20907 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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 21:45:10,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:10,056 INFO L93 Difference]: Finished difference Result 43620 states and 53725 transitions. [2023-12-21 21:45:10,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:45:10,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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 215 [2023-12-21 21:45:10,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:10,102 INFO L225 Difference]: With dead ends: 43620 [2023-12-21 21:45:10,102 INFO L226 Difference]: Without dead ends: 29510 [2023-12-21 21:45:10,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 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 21:45:10,112 INFO L413 NwaCegarLoop]: 4221 mSDtfsCounter, 4467 mSDsluCounter, 4386 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4473 SdHoareTripleChecker+Valid, 8607 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:10,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4473 Valid, 8607 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:10,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29510 states. [2023-12-21 21:45:11,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29510 to 29508. [2023-12-21 21:45:11,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29508 states, 27934 states have (on average 1.2540631488508627) internal successors, (35031), 28000 states have internal predecessors, (35031), 788 states have call successors, (788), 704 states have call predecessors, (788), 784 states have return successors, (952), 804 states have call predecessors, (952), 788 states have call successors, (952) [2023-12-21 21:45:11,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29508 states to 29508 states and 36771 transitions. [2023-12-21 21:45:11,257 INFO L78 Accepts]: Start accepts. Automaton has 29508 states and 36771 transitions. Word has length 215 [2023-12-21 21:45:11,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:11,257 INFO L495 AbstractCegarLoop]: Abstraction has 29508 states and 36771 transitions. [2023-12-21 21:45:11,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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 21:45:11,257 INFO L276 IsEmpty]: Start isEmpty. Operand 29508 states and 36771 transitions. [2023-12-21 21:45:11,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-21 21:45:11,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:11,268 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2023-12-21 21:45:11,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2023-12-21 21:45:11,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:45:11,469 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:11,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:11,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1283385936, now seen corresponding path program 1 times [2023-12-21 21:45:11,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:11,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157887611] [2023-12-21 21:45:11,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:11,470 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 21:45:11,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:11,471 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:45:11,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-21 21:45:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:11,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:45:11,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:11,824 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-21 21:45:11,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:11,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:11,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157887611] [2023-12-21 21:45:11,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157887611] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:11,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:11,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:11,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306813034] [2023-12-21 21:45:11,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:11,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:45:11,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:11,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:45:11,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:45:11,826 INFO L87 Difference]: Start difference. First operand 29508 states and 36771 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 21:45:14,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:14,044 INFO L93 Difference]: Finished difference Result 93629 states and 113255 transitions. [2023-12-21 21:45:14,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:45:14,045 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), 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 217 [2023-12-21 21:45:14,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:14,170 INFO L225 Difference]: With dead ends: 93629 [2023-12-21 21:45:14,170 INFO L226 Difference]: Without dead ends: 66259 [2023-12-21 21:45:14,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 215 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 21:45:14,199 INFO L413 NwaCegarLoop]: 4363 mSDtfsCounter, 4454 mSDsluCounter, 4493 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4460 SdHoareTripleChecker+Valid, 8856 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:14,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4460 Valid, 8856 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:45:14,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66259 states. [2023-12-21 21:45:16,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66259 to 65041. [2023-12-21 21:45:16,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65041 states, 61448 states have (on average 1.220967321963286) internal successors, (75026), 61883 states have internal predecessors, (75026), 1511 states have call successors, (1511), 1344 states have call predecessors, (1511), 2080 states have return successors, (2444), 1815 states have call predecessors, (2444), 1511 states have call successors, (2444) [2023-12-21 21:45:17,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65041 states to 65041 states and 78981 transitions. [2023-12-21 21:45:17,002 INFO L78 Accepts]: Start accepts. Automaton has 65041 states and 78981 transitions. Word has length 217 [2023-12-21 21:45:17,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:17,002 INFO L495 AbstractCegarLoop]: Abstraction has 65041 states and 78981 transitions. [2023-12-21 21:45:17,003 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), 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 21:45:17,003 INFO L276 IsEmpty]: Start isEmpty. Operand 65041 states and 78981 transitions. [2023-12-21 21:45:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-21 21:45:17,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:17,025 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2023-12-21 21:45:17,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-12-21 21:45:17,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:45:17,226 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:17,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:17,227 INFO L85 PathProgramCache]: Analyzing trace with hash -2004305358, now seen corresponding path program 1 times [2023-12-21 21:45:17,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:17,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56616487] [2023-12-21 21:45:17,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:17,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:45:17,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:17,228 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:45:17,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-21 21:45:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:17,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:45:17,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:17,375 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-21 21:45:17,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:17,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:17,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56616487] [2023-12-21 21:45:17,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56616487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:17,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:17,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:45:17,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764939591] [2023-12-21 21:45:17,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:17,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:45:17,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:17,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:45:17,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:45:17,377 INFO L87 Difference]: Start difference. First operand 65041 states and 78981 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 21:45:19,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:19,939 INFO L93 Difference]: Finished difference Result 127936 states and 153960 transitions. [2023-12-21 21:45:19,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:45:19,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 217 [2023-12-21 21:45:19,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:20,067 INFO L225 Difference]: With dead ends: 127936 [2023-12-21 21:45:20,067 INFO L226 Difference]: Without dead ends: 65032 [2023-12-21 21:45:20,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 215 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 21:45:20,112 INFO L413 NwaCegarLoop]: 4308 mSDtfsCounter, 377 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 8265 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:20,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 8265 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:45:20,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65032 states. [2023-12-21 21:45:22,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65032 to 65032. [2023-12-21 21:45:22,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65032 states, 61442 states have (on average 1.220891247029719) internal successors, (75014), 61876 states have internal predecessors, (75014), 1508 states have call successors, (1508), 1344 states have call predecessors, (1508), 2080 states have return successors, (2440), 1812 states have call predecessors, (2440), 1508 states have call successors, (2440) [2023-12-21 21:45:22,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65032 states to 65032 states and 78962 transitions. [2023-12-21 21:45:22,672 INFO L78 Accepts]: Start accepts. Automaton has 65032 states and 78962 transitions. Word has length 217 [2023-12-21 21:45:22,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:22,673 INFO L495 AbstractCegarLoop]: Abstraction has 65032 states and 78962 transitions. [2023-12-21 21:45:22,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 21:45:22,673 INFO L276 IsEmpty]: Start isEmpty. Operand 65032 states and 78962 transitions. [2023-12-21 21:45:22,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-12-21 21:45:22,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:22,691 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2023-12-21 21:45:22,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-12-21 21:45:22,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:45:22,893 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:22,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:22,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1892272171, now seen corresponding path program 1 times [2023-12-21 21:45:22,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:22,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091421659] [2023-12-21 21:45:22,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:22,894 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 21:45:22,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:22,895 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:45:22,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-21 21:45:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:23,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:45:23,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-21 21:45:23,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:23,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:23,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091421659] [2023-12-21 21:45:23,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091421659] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:23,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:23,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:23,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324770548] [2023-12-21 21:45:23,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:23,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:45:23,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:23,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:45:23,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:45:23,227 INFO L87 Difference]: Start difference. First operand 65032 states and 78962 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 21:45:27,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:27,549 INFO L93 Difference]: Finished difference Result 185852 states and 222875 transitions. [2023-12-21 21:45:27,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:45:27,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 219 [2023-12-21 21:45:27,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:27,762 INFO L225 Difference]: With dead ends: 185852 [2023-12-21 21:45:27,762 INFO L226 Difference]: Without dead ends: 122958 [2023-12-21 21:45:27,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 217 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 21:45:27,808 INFO L413 NwaCegarLoop]: 4330 mSDtfsCounter, 4433 mSDsluCounter, 4464 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4439 SdHoareTripleChecker+Valid, 8794 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:27,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4439 Valid, 8794 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:45:27,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122958 states. [2023-12-21 21:45:32,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122958 to 122956. [2023-12-21 21:45:32,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122956 states, 116035 states have (on average 1.2079717326668677) internal successors, (140167), 116902 states have internal predecessors, (140167), 2887 states have call successors, (2887), 2560 states have call predecessors, (2887), 4032 states have return successors, (4763), 3495 states have call predecessors, (4763), 2887 states have call successors, (4763) [2023-12-21 21:45:32,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122956 states to 122956 states and 147817 transitions. [2023-12-21 21:45:32,878 INFO L78 Accepts]: Start accepts. Automaton has 122956 states and 147817 transitions. Word has length 219 [2023-12-21 21:45:32,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:32,878 INFO L495 AbstractCegarLoop]: Abstraction has 122956 states and 147817 transitions. [2023-12-21 21:45:32,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 21:45:32,879 INFO L276 IsEmpty]: Start isEmpty. Operand 122956 states and 147817 transitions. [2023-12-21 21:45:32,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-12-21 21:45:32,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:32,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2023-12-21 21:45:32,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-12-21 21:45:33,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:45:33,130 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:33,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:33,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1529029523, now seen corresponding path program 1 times [2023-12-21 21:45:33,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:33,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144617465] [2023-12-21 21:45:33,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:33,131 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 21:45:33,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:33,132 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:45:33,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-21 21:45:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:33,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:45:33,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-21 21:45:33,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:33,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:33,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144617465] [2023-12-21 21:45:33,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144617465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:33,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:33,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:45:33,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61509792] [2023-12-21 21:45:33,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:33,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:45:33,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:33,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:45:33,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:45:33,278 INFO L87 Difference]: Start difference. First operand 122956 states and 147817 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 21:45:37,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:37,741 INFO L93 Difference]: Finished difference Result 243766 states and 291634 transitions. [2023-12-21 21:45:37,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:45:37,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 219 [2023-12-21 21:45:37,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:37,953 INFO L225 Difference]: With dead ends: 243766 [2023-12-21 21:45:37,954 INFO L226 Difference]: Without dead ends: 122948 [2023-12-21 21:45:38,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:45:38,036 INFO L413 NwaCegarLoop]: 4307 mSDtfsCounter, 375 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 8264 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:38,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 8264 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:45:38,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122948 states. [2023-12-21 21:45:42,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122948 to 122948. [2023-12-21 21:45:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122948 states, 116030 states have (on average 1.2079376023442214) internal successors, (140157), 116896 states have internal predecessors, (140157), 2884 states have call successors, (2884), 2560 states have call predecessors, (2884), 4032 states have return successors, (4760), 3492 states have call predecessors, (4760), 2884 states have call successors, (4760) [2023-12-21 21:45:42,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122948 states to 122948 states and 147801 transitions. [2023-12-21 21:45:42,916 INFO L78 Accepts]: Start accepts. Automaton has 122948 states and 147801 transitions. Word has length 219 [2023-12-21 21:45:42,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:45:42,917 INFO L495 AbstractCegarLoop]: Abstraction has 122948 states and 147801 transitions. [2023-12-21 21:45:42,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 21:45:42,917 INFO L276 IsEmpty]: Start isEmpty. Operand 122948 states and 147801 transitions. [2023-12-21 21:45:43,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-21 21:45:43,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:45:43,200 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2023-12-21 21:45:43,208 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 (41)] Forceful destruction successful, exit code 0 [2023-12-21 21:45:43,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:45:43,406 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:45:43,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:45:43,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1293348688, now seen corresponding path program 1 times [2023-12-21 21:45:43,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:45:43,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038951385] [2023-12-21 21:45:43,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:45:43,407 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 21:45:43,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:45:43,408 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:45:43,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-21 21:45:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:45:43,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:45:43,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:45:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-21 21:45:43,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:45:43,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:45:43,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038951385] [2023-12-21 21:45:43,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038951385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:45:43,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:45:43,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:45:43,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784446170] [2023-12-21 21:45:43,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:45:43,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:45:43,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:45:43,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:45:43,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:45:43,744 INFO L87 Difference]: Start difference. First operand 122948 states and 147801 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 21:45:52,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:45:52,105 INFO L93 Difference]: Finished difference Result 354963 states and 423704 transitions. [2023-12-21 21:45:52,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:45:52,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 221 [2023-12-21 21:45:52,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:45:52,742 INFO L225 Difference]: With dead ends: 354963 [2023-12-21 21:45:52,742 INFO L226 Difference]: Without dead ends: 234153 [2023-12-21 21:45:52,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 219 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 21:45:52,833 INFO L413 NwaCegarLoop]: 4316 mSDtfsCounter, 4427 mSDsluCounter, 4446 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4433 SdHoareTripleChecker+Valid, 8762 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:45:52,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4433 Valid, 8762 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:45:52,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234153 states.