/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 08:08:34,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 08:08:34,516 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 08:08:34,520 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 08:08:34,521 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 08:08:34,543 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 08:08:34,543 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 08:08:34,544 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 08:08:34,544 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 08:08:34,547 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 08:08:34,547 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 08:08:34,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 08:08:34,548 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 08:08:34,549 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 08:08:34,549 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 08:08:34,550 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 08:08:34,550 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 08:08:34,550 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 08:08:34,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 08:08:34,551 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 08:08:34,551 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 08:08:34,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 08:08:34,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 08:08:34,552 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 08:08:34,552 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 08:08:34,552 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 08:08:34,553 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 08:08:34,553 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 08:08:34,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 08:08:34,553 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 08:08:34,554 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 08:08:34,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 08:08:34,554 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 08:08:34,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 08:08:34,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 08:08:34,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 08:08:34,555 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 08:08:34,555 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 08:08:34,555 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 08:08:34,555 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 08:08:34,555 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 08:08:34,555 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 08:08:34,556 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 08:08:34,556 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 08:08:34,556 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 08:08:34,556 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 08:08:34,556 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 08:08:34,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 08:08:34,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 08:08:34,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 08:08:34,775 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 08:08:34,775 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 08:08:34,777 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-1.c [2023-12-16 08:08:35,882 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 08:08:36,088 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 08:08:36,088 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-1.c [2023-12-16 08:08:36,099 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8184c1dc0/213ea8d13288419fb6a6e33117b6323d/FLAG2c6a71d30 [2023-12-16 08:08:36,115 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8184c1dc0/213ea8d13288419fb6a6e33117b6323d [2023-12-16 08:08:36,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 08:08:36,119 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 08:08:36,120 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 08:08:36,121 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 08:08:36,124 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 08:08:36,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:08:36" (1/1) ... [2023-12-16 08:08:36,126 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770e807e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:08:36, skipping insertion in model container [2023-12-16 08:08:36,126 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:08:36" (1/1) ... [2023-12-16 08:08:36,199 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 08:08:36,335 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-1.c[913,926] [2023-12-16 08:08:36,385 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-1.c[5977,5990] [2023-12-16 08:08:36,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 08:08:36,488 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 08:08:36,496 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-1.c[913,926] [2023-12-16 08:08:36,504 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-1.c[5977,5990] [2023-12-16 08:08:36,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 08:08:36,564 INFO L206 MainTranslator]: Completed translation [2023-12-16 08:08:36,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:08:36 WrapperNode [2023-12-16 08:08:36,564 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 08:08:36,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 08:08:36,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 08:08:36,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 08:08:36,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:08:36" (1/1) ... [2023-12-16 08:08:36,599 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:08:36" (1/1) ... [2023-12-16 08:08:36,649 INFO L138 Inliner]: procedures = 69, calls = 79, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 931 [2023-12-16 08:08:36,649 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 08:08:36,650 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 08:08:36,650 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 08:08:36,650 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 08:08:36,668 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:08:36" (1/1) ... [2023-12-16 08:08:36,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:08:36" (1/1) ... [2023-12-16 08:08:36,673 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:08:36" (1/1) ... [2023-12-16 08:08:36,738 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]. [2023-12-16 08:08:36,739 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:08:36" (1/1) ... [2023-12-16 08:08:36,739 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:08:36" (1/1) ... [2023-12-16 08:08:36,765 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:08:36" (1/1) ... [2023-12-16 08:08:36,783 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:08:36" (1/1) ... [2023-12-16 08:08:36,785 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:08:36" (1/1) ... [2023-12-16 08:08:36,788 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:08:36" (1/1) ... [2023-12-16 08:08:36,791 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 08:08:36,792 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 08:08:36,792 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 08:08:36,792 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 08:08:36,793 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:08:36" (1/1) ... [2023-12-16 08:08:36,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 08:08:36,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 08:08:36,833 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) [2023-12-16 08:08:36,837 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 [2023-12-16 08:08:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 08:08:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-16 08:08:36,857 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-16 08:08:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-16 08:08:36,857 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-16 08:08:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-16 08:08:36,858 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-16 08:08:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-16 08:08:36,858 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-16 08:08:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-16 08:08:36,858 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-16 08:08:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-16 08:08:36,858 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-16 08:08:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 08:08:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-16 08:08:36,858 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-16 08:08:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-16 08:08:36,859 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-16 08:08:36,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 08:08:36,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 08:08:36,860 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-16 08:08:36,860 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-16 08:08:36,860 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-16 08:08:36,861 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-16 08:08:37,000 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 08:08:37,001 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 08:08:37,664 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 08:08:37,706 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 08:08:37,706 INFO L309 CfgBuilder]: Removed 17 assume(true) statements. [2023-12-16 08:08:37,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:08:37 BoogieIcfgContainer [2023-12-16 08:08:37,706 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 08:08:37,708 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 08:08:37,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 08:08:37,710 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 08:08:37,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 08:08:36" (1/3) ... [2023-12-16 08:08:37,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbb15dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:08:37, skipping insertion in model container [2023-12-16 08:08:37,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:08:36" (2/3) ... [2023-12-16 08:08:37,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbb15dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:08:37, skipping insertion in model container [2023-12-16 08:08:37,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:08:37" (3/3) ... [2023-12-16 08:08:37,712 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.10.cil-1.c [2023-12-16 08:08:37,724 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 08:08:37,724 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 08:08:37,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 08:08:37,765 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;@53d651f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 08:08:37,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 08:08:37,771 INFO L276 IsEmpty]: Start isEmpty. Operand has 373 states, 328 states have (on average 1.7225609756097562) internal successors, (565), 335 states have internal predecessors, (565), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-16 08:08:37,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 08:08:37,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:37,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:37,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:37,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:37,782 INFO L85 PathProgramCache]: Analyzing trace with hash -2128058392, now seen corresponding path program 1 times [2023-12-16 08:08:37,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:37,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306512169] [2023-12-16 08:08:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:37,791 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 [2023-12-16 08:08:37,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:37,794 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) [2023-12-16 08:08:37,819 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 [2023-12-16 08:08:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:37,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:08:37,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:37,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:37,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:37,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306512169] [2023-12-16 08:08:37,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306512169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:37,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:37,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:08:37,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923091157] [2023-12-16 08:08:37,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:37,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:08:37,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:38,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:08:38,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:38,008 INFO L87 Difference]: Start difference. First operand has 373 states, 328 states have (on average 1.7225609756097562) internal successors, (565), 335 states have internal predecessors, (565), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 08:08:38,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:38,185 INFO L93 Difference]: Finished difference Result 726 states and 1222 transitions. [2023-12-16 08:08:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:08:38,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2023-12-16 08:08:38,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:38,203 INFO L225 Difference]: With dead ends: 726 [2023-12-16 08:08:38,203 INFO L226 Difference]: Without dead ends: 367 [2023-12-16 08:08:38,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:38,213 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 86 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:38,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1001 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:08:38,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-12-16 08:08:38,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2023-12-16 08:08:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 325 states have (on average 1.6092307692307692) internal successors, (523), 329 states have internal predecessors, (523), 32 states have call successors, (32), 10 states have call predecessors, (32), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-16 08:08:38,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 583 transitions. [2023-12-16 08:08:38,282 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 583 transitions. Word has length 37 [2023-12-16 08:08:38,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:38,282 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 583 transitions. [2023-12-16 08:08:38,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 08:08:38,283 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 583 transitions. [2023-12-16 08:08:38,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 08:08:38,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:38,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:38,297 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 [2023-12-16 08:08:38,489 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 [2023-12-16 08:08:38,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:38,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:38,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1284052890, now seen corresponding path program 1 times [2023-12-16 08:08:38,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:38,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156351499] [2023-12-16 08:08:38,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:38,493 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 [2023-12-16 08:08:38,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:38,502 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) [2023-12-16 08:08:38,504 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 [2023-12-16 08:08:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:38,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:08:38,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:38,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:38,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:38,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:38,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156351499] [2023-12-16 08:08:38,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156351499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:38,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:38,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:08:38,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524696235] [2023-12-16 08:08:38,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:38,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:08:38,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:38,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:08:38,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:38,656 INFO L87 Difference]: Start difference. First operand 367 states and 583 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 08:08:38,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:38,742 INFO L93 Difference]: Finished difference Result 474 states and 738 transitions. [2023-12-16 08:08:38,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:08:38,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2023-12-16 08:08:38,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:38,747 INFO L225 Difference]: With dead ends: 474 [2023-12-16 08:08:38,747 INFO L226 Difference]: Without dead ends: 418 [2023-12-16 08:08:38,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:38,749 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 561 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:38,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 615 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:08:38,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-12-16 08:08:38,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 414. [2023-12-16 08:08:38,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 366 states have (on average 1.5846994535519126) internal successors, (580), 370 states have internal predecessors, (580), 36 states have call successors, (36), 12 states have call predecessors, (36), 10 states have return successors, (36), 32 states have call predecessors, (36), 32 states have call successors, (36) [2023-12-16 08:08:38,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 652 transitions. [2023-12-16 08:08:38,775 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 652 transitions. Word has length 37 [2023-12-16 08:08:38,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:38,775 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 652 transitions. [2023-12-16 08:08:38,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 08:08:38,776 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 652 transitions. [2023-12-16 08:08:38,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-16 08:08:38,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:38,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:38,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-16 08:08:38,984 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 [2023-12-16 08:08:38,984 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:38,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:38,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1913421637, now seen corresponding path program 1 times [2023-12-16 08:08:38,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:38,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518321361] [2023-12-16 08:08:38,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:38,986 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 [2023-12-16 08:08:38,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:38,992 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) [2023-12-16 08:08:38,993 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 [2023-12-16 08:08:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:39,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:08:39,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:39,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:39,102 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:39,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:39,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518321361] [2023-12-16 08:08:39,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518321361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:39,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:39,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:08:39,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771906771] [2023-12-16 08:08:39,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:39,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:08:39,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:39,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:08:39,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:39,105 INFO L87 Difference]: Start difference. First operand 414 states and 652 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 08:08:39,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:39,213 INFO L93 Difference]: Finished difference Result 614 states and 944 transitions. [2023-12-16 08:08:39,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:08:39,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-12-16 08:08:39,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:39,216 INFO L225 Difference]: With dead ends: 614 [2023-12-16 08:08:39,216 INFO L226 Difference]: Without dead ends: 511 [2023-12-16 08:08:39,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:39,217 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 557 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:39,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 603 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:08:39,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2023-12-16 08:08:39,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 507. [2023-12-16 08:08:39,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 447 states have (on average 1.54586129753915) internal successors, (691), 451 states have internal predecessors, (691), 44 states have call successors, (44), 16 states have call predecessors, (44), 14 states have return successors, (48), 40 states have call predecessors, (48), 40 states have call successors, (48) [2023-12-16 08:08:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 783 transitions. [2023-12-16 08:08:39,239 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 783 transitions. Word has length 38 [2023-12-16 08:08:39,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:39,239 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 783 transitions. [2023-12-16 08:08:39,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 08:08:39,240 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 783 transitions. [2023-12-16 08:08:39,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-16 08:08:39,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:39,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:39,258 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 [2023-12-16 08:08:39,444 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 [2023-12-16 08:08:39,444 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:39,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:39,445 INFO L85 PathProgramCache]: Analyzing trace with hash -252467639, now seen corresponding path program 1 times [2023-12-16 08:08:39,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:39,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962169421] [2023-12-16 08:08:39,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:39,445 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 [2023-12-16 08:08:39,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:39,447 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) [2023-12-16 08:08:39,447 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 [2023-12-16 08:08:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:39,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:08:39,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:39,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:39,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:39,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962169421] [2023-12-16 08:08:39,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962169421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:39,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:39,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:08:39,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489008218] [2023-12-16 08:08:39,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:39,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:08:39,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:39,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:08:39,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:39,550 INFO L87 Difference]: Start difference. First operand 507 states and 783 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 08:08:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:39,647 INFO L93 Difference]: Finished difference Result 839 states and 1250 transitions. [2023-12-16 08:08:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:08:39,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-12-16 08:08:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:39,650 INFO L225 Difference]: With dead ends: 839 [2023-12-16 08:08:39,650 INFO L226 Difference]: Without dead ends: 643 [2023-12-16 08:08:39,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:39,651 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 57 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:39,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1079 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:08:39,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-12-16 08:08:39,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 592. [2023-12-16 08:08:39,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 523 states have (on average 1.5219885277246654) internal successors, (796), 529 states have internal predecessors, (796), 48 states have call successors, (48), 21 states have call predecessors, (48), 19 states have return successors, (52), 42 states have call predecessors, (52), 44 states have call successors, (52) [2023-12-16 08:08:39,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 896 transitions. [2023-12-16 08:08:39,676 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 896 transitions. Word has length 39 [2023-12-16 08:08:39,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:39,676 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 896 transitions. [2023-12-16 08:08:39,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 08:08:39,676 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 896 transitions. [2023-12-16 08:08:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 08:08:39,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:39,678 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:39,683 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 [2023-12-16 08:08:39,883 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 [2023-12-16 08:08:39,884 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:39,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:39,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1206059197, now seen corresponding path program 1 times [2023-12-16 08:08:39,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:39,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844982434] [2023-12-16 08:08:39,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:39,888 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 [2023-12-16 08:08:39,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:39,891 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) [2023-12-16 08:08:39,910 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 [2023-12-16 08:08:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:39,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:08:39,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:40,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:40,020 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:40,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844982434] [2023-12-16 08:08:40,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844982434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:40,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:40,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:08:40,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903598150] [2023-12-16 08:08:40,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:40,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:08:40,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:40,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:08:40,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:40,025 INFO L87 Difference]: Start difference. First operand 592 states and 896 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 08:08:40,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:40,136 INFO L93 Difference]: Finished difference Result 1005 states and 1473 transitions. [2023-12-16 08:08:40,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:08:40,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2023-12-16 08:08:40,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:40,140 INFO L225 Difference]: With dead ends: 1005 [2023-12-16 08:08:40,140 INFO L226 Difference]: Without dead ends: 724 [2023-12-16 08:08:40,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:40,141 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 46 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:40,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1115 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:08:40,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2023-12-16 08:08:40,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2023-12-16 08:08:40,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 636 states have (on average 1.470125786163522) internal successors, (935), 642 states have internal predecessors, (935), 60 states have call successors, (60), 28 states have call predecessors, (60), 26 states have return successors, (70), 54 states have call predecessors, (70), 56 states have call successors, (70) [2023-12-16 08:08:40,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1065 transitions. [2023-12-16 08:08:40,169 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1065 transitions. Word has length 54 [2023-12-16 08:08:40,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:40,169 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 1065 transitions. [2023-12-16 08:08:40,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 08:08:40,170 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1065 transitions. [2023-12-16 08:08:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 08:08:40,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:40,171 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:40,181 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 [2023-12-16 08:08:40,383 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 [2023-12-16 08:08:40,384 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:40,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:40,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2005994393, now seen corresponding path program 1 times [2023-12-16 08:08:40,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:40,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567096993] [2023-12-16 08:08:40,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:40,385 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 [2023-12-16 08:08:40,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:40,386 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) [2023-12-16 08:08:40,389 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 [2023-12-16 08:08:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:40,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:08:40,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:40,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 08:08:40,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:40,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:40,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567096993] [2023-12-16 08:08:40,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567096993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:40,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:40,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:08:40,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032366430] [2023-12-16 08:08:40,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:40,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:08:40,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:40,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:08:40,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:40,503 INFO L87 Difference]: Start difference. First operand 724 states and 1065 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 08:08:40,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:40,619 INFO L93 Difference]: Finished difference Result 1188 states and 1696 transitions. [2023-12-16 08:08:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:08:40,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2023-12-16 08:08:40,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:40,622 INFO L225 Difference]: With dead ends: 1188 [2023-12-16 08:08:40,622 INFO L226 Difference]: Without dead ends: 816 [2023-12-16 08:08:40,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:40,623 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 540 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:40,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 607 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:08:40,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-12-16 08:08:40,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-12-16 08:08:40,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 717 states have (on average 1.4379358437935843) internal successors, (1031), 723 states have internal predecessors, (1031), 66 states have call successors, (66), 33 states have call predecessors, (66), 31 states have return successors, (78), 60 states have call predecessors, (78), 62 states have call successors, (78) [2023-12-16 08:08:40,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1175 transitions. [2023-12-16 08:08:40,659 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1175 transitions. Word has length 59 [2023-12-16 08:08:40,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:40,659 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1175 transitions. [2023-12-16 08:08:40,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 08:08:40,660 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1175 transitions. [2023-12-16 08:08:40,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 08:08:40,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:40,661 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:40,666 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 [2023-12-16 08:08:40,867 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 [2023-12-16 08:08:40,867 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:40,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:40,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1062118076, now seen corresponding path program 1 times [2023-12-16 08:08:40,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:40,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688781917] [2023-12-16 08:08:40,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:40,868 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 [2023-12-16 08:08:40,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:40,872 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) [2023-12-16 08:08:40,873 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 [2023-12-16 08:08:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:40,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:40,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:40,975 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-16 08:08:40,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:40,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:40,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688781917] [2023-12-16 08:08:40,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688781917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:40,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:40,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:40,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901866881] [2023-12-16 08:08:40,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:40,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:08:40,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:40,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:08:40,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:08:40,978 INFO L87 Difference]: Start difference. First operand 816 states and 1175 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 08:08:41,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:41,111 INFO L93 Difference]: Finished difference Result 1315 states and 1864 transitions. [2023-12-16 08:08:41,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:08:41,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-16 08:08:41,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:41,115 INFO L225 Difference]: With dead ends: 1315 [2023-12-16 08:08:41,115 INFO L226 Difference]: Without dead ends: 877 [2023-12-16 08:08:41,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:08:41,116 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 11 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:41,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1609 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:08:41,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2023-12-16 08:08:41,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 847. [2023-12-16 08:08:41,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 746 states have (on average 1.420911528150134) internal successors, (1060), 754 states have internal predecessors, (1060), 66 states have call successors, (66), 33 states have call predecessors, (66), 33 states have return successors, (80), 60 states have call predecessors, (80), 62 states have call successors, (80) [2023-12-16 08:08:41,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1206 transitions. [2023-12-16 08:08:41,153 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1206 transitions. Word has length 60 [2023-12-16 08:08:41,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:41,154 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1206 transitions. [2023-12-16 08:08:41,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 08:08:41,154 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1206 transitions. [2023-12-16 08:08:41,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 08:08:41,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:41,155 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:41,181 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 (8)] Ended with exit code 0 [2023-12-16 08:08:41,359 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 [2023-12-16 08:08:41,359 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:41,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:41,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1906123578, now seen corresponding path program 1 times [2023-12-16 08:08:41,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:41,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862558464] [2023-12-16 08:08:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:41,363 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:08:41,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:41,364 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) [2023-12-16 08:08:41,367 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 [2023-12-16 08:08:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:41,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:41,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 08:08:41,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:41,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:41,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862558464] [2023-12-16 08:08:41,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862558464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:41,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:41,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:41,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392939431] [2023-12-16 08:08:41,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:41,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:08:41,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:41,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:08:41,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:08:41,494 INFO L87 Difference]: Start difference. First operand 847 states and 1206 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 08:08:41,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:41,606 INFO L93 Difference]: Finished difference Result 1264 states and 1775 transitions. [2023-12-16 08:08:41,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:08:41,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-16 08:08:41,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:41,609 INFO L225 Difference]: With dead ends: 1264 [2023-12-16 08:08:41,609 INFO L226 Difference]: Without dead ends: 773 [2023-12-16 08:08:41,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:08:41,611 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 2 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:41,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1606 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:08:41,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2023-12-16 08:08:41,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 767. [2023-12-16 08:08:41,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 677 states have (on average 1.4268833087149189) internal successors, (966), 687 states have internal predecessors, (966), 58 states have call successors, (58), 28 states have call predecessors, (58), 30 states have return successors, (70), 52 states have call predecessors, (70), 54 states have call successors, (70) [2023-12-16 08:08:41,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1094 transitions. [2023-12-16 08:08:41,639 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1094 transitions. Word has length 60 [2023-12-16 08:08:41,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:41,641 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 1094 transitions. [2023-12-16 08:08:41,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 08:08:41,641 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1094 transitions. [2023-12-16 08:08:41,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 08:08:41,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:41,642 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:41,661 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 [2023-12-16 08:08:41,845 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 [2023-12-16 08:08:41,846 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:41,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:41,846 INFO L85 PathProgramCache]: Analyzing trace with hash -108483962, now seen corresponding path program 1 times [2023-12-16 08:08:41,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:41,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473956780] [2023-12-16 08:08:41,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:41,847 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 [2023-12-16 08:08:41,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:41,848 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) [2023-12-16 08:08:41,849 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 [2023-12-16 08:08:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:41,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:41,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:41,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 08:08:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-16 08:08:42,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:42,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473956780] [2023-12-16 08:08:42,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473956780] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 08:08:42,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 08:08:42,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2023-12-16 08:08:42,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68686061] [2023-12-16 08:08:42,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:42,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:08:42,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:42,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:08:42,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:08:42,035 INFO L87 Difference]: Start difference. First operand 767 states and 1094 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 08:08:42,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:42,251 INFO L93 Difference]: Finished difference Result 816 states and 1155 transitions. [2023-12-16 08:08:42,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:08:42,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2023-12-16 08:08:42,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:42,255 INFO L225 Difference]: With dead ends: 816 [2023-12-16 08:08:42,255 INFO L226 Difference]: Without dead ends: 813 [2023-12-16 08:08:42,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:08:42,256 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 1046 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:42,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 612 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 08:08:42,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2023-12-16 08:08:42,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 766. [2023-12-16 08:08:42,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 677 states have (on average 1.4239290989660265) internal successors, (964), 686 states have internal predecessors, (964), 57 states have call successors, (57), 28 states have call predecessors, (57), 30 states have return successors, (70), 52 states have call predecessors, (70), 54 states have call successors, (70) [2023-12-16 08:08:42,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1091 transitions. [2023-12-16 08:08:42,286 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1091 transitions. Word has length 60 [2023-12-16 08:08:42,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:42,287 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 1091 transitions. [2023-12-16 08:08:42,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 08:08:42,287 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1091 transitions. [2023-12-16 08:08:42,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 08:08:42,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:42,288 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:42,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 08:08:42,491 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 [2023-12-16 08:08:42,491 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:42,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:42,492 INFO L85 PathProgramCache]: Analyzing trace with hash 930679752, now seen corresponding path program 1 times [2023-12-16 08:08:42,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:42,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316337331] [2023-12-16 08:08:42,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:42,492 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 [2023-12-16 08:08:42,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:42,493 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) [2023-12-16 08:08:42,495 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 [2023-12-16 08:08:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:42,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 08:08:42,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:42,762 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:42,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 08:08:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-16 08:08:42,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:42,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316337331] [2023-12-16 08:08:42,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316337331] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 08:08:42,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 08:08:42,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2023-12-16 08:08:42,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209254886] [2023-12-16 08:08:42,828 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 08:08:42,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 08:08:42,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:42,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 08:08:42,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 08:08:42,829 INFO L87 Difference]: Start difference. First operand 766 states and 1091 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-16 08:08:43,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:43,173 INFO L93 Difference]: Finished difference Result 1485 states and 2029 transitions. [2023-12-16 08:08:43,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 08:08:43,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 61 [2023-12-16 08:08:43,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:43,179 INFO L225 Difference]: With dead ends: 1485 [2023-12-16 08:08:43,179 INFO L226 Difference]: Without dead ends: 1482 [2023-12-16 08:08:43,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 08:08:43,180 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 738 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:43,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1881 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:08:43,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2023-12-16 08:08:43,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1069. [2023-12-16 08:08:43,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 944 states have (on average 1.3877118644067796) internal successors, (1310), 959 states have internal predecessors, (1310), 76 states have call successors, (76), 41 states have call predecessors, (76), 47 states have return successors, (101), 69 states have call predecessors, (101), 73 states have call successors, (101) [2023-12-16 08:08:43,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1487 transitions. [2023-12-16 08:08:43,267 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1487 transitions. Word has length 61 [2023-12-16 08:08:43,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:43,267 INFO L495 AbstractCegarLoop]: Abstraction has 1069 states and 1487 transitions. [2023-12-16 08:08:43,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-16 08:08:43,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1487 transitions. [2023-12-16 08:08:43,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 08:08:43,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:43,269 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:43,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 08:08:43,472 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 [2023-12-16 08:08:43,473 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:43,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:43,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1814252762, now seen corresponding path program 2 times [2023-12-16 08:08:43,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:43,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890421051] [2023-12-16 08:08:43,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 08:08:43,474 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 [2023-12-16 08:08:43,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:43,475 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) [2023-12-16 08:08:43,479 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 [2023-12-16 08:08:43,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 08:08:43,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 08:08:43,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:08:43,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-16 08:08:43,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:43,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:43,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890421051] [2023-12-16 08:08:43,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890421051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:43,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:43,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:08:43,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227901095] [2023-12-16 08:08:43,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:43,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:08:43,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:43,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:08:43,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:43,580 INFO L87 Difference]: Start difference. First operand 1069 states and 1487 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-16 08:08:43,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:43,681 INFO L93 Difference]: Finished difference Result 1624 states and 2218 transitions. [2023-12-16 08:08:43,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:08:43,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2023-12-16 08:08:43,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:43,685 INFO L225 Difference]: With dead ends: 1624 [2023-12-16 08:08:43,685 INFO L226 Difference]: Without dead ends: 973 [2023-12-16 08:08:43,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:43,686 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 547 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:43,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 620 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:08:43,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2023-12-16 08:08:43,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 961. [2023-12-16 08:08:43,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 849 states have (on average 1.392226148409894) internal successors, (1182), 864 states have internal predecessors, (1182), 69 states have call successors, (69), 36 states have call predecessors, (69), 41 states have return successors, (90), 61 states have call predecessors, (90), 66 states have call successors, (90) [2023-12-16 08:08:43,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1341 transitions. [2023-12-16 08:08:43,735 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1341 transitions. Word has length 78 [2023-12-16 08:08:43,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:43,735 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1341 transitions. [2023-12-16 08:08:43,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-16 08:08:43,735 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1341 transitions. [2023-12-16 08:08:43,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 08:08:43,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:43,741 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:43,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 08:08:43,944 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 [2023-12-16 08:08:43,945 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:43,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:43,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2059529315, now seen corresponding path program 1 times [2023-12-16 08:08:43,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:43,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024747671] [2023-12-16 08:08:43,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:43,947 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 [2023-12-16 08:08:43,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:43,948 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) [2023-12-16 08:08:43,950 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 [2023-12-16 08:08:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:44,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:44,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:44,082 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 08:08:44,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:44,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:44,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024747671] [2023-12-16 08:08:44,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024747671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:44,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:44,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:44,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091292356] [2023-12-16 08:08:44,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:44,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:08:44,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:44,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:08:44,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:08:44,084 INFO L87 Difference]: Start difference. First operand 961 states and 1341 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:44,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:44,518 INFO L93 Difference]: Finished difference Result 1644 states and 2222 transitions. [2023-12-16 08:08:44,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:08:44,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 92 [2023-12-16 08:08:44,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:44,522 INFO L225 Difference]: With dead ends: 1644 [2023-12-16 08:08:44,522 INFO L226 Difference]: Without dead ends: 994 [2023-12-16 08:08:44,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:08:44,525 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 756 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:44,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 615 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:08:44,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2023-12-16 08:08:44,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 961. [2023-12-16 08:08:44,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 849 states have (on average 1.3769140164899882) internal successors, (1169), 864 states have internal predecessors, (1169), 69 states have call successors, (69), 36 states have call predecessors, (69), 41 states have return successors, (89), 61 states have call predecessors, (89), 66 states have call successors, (89) [2023-12-16 08:08:44,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1327 transitions. [2023-12-16 08:08:44,579 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1327 transitions. Word has length 92 [2023-12-16 08:08:44,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:44,579 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1327 transitions. [2023-12-16 08:08:44,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:44,579 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1327 transitions. [2023-12-16 08:08:44,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-16 08:08:44,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:44,581 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:44,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-16 08:08:44,785 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 [2023-12-16 08:08:44,785 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:44,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:44,786 INFO L85 PathProgramCache]: Analyzing trace with hash 153372397, now seen corresponding path program 1 times [2023-12-16 08:08:44,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:44,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168277654] [2023-12-16 08:08:44,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:44,787 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 [2023-12-16 08:08:44,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:44,788 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) [2023-12-16 08:08:44,789 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 [2023-12-16 08:08:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:44,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:08:44,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:44,911 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 08:08:44,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:44,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:44,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168277654] [2023-12-16 08:08:44,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168277654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:44,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:44,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:08:44,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763215924] [2023-12-16 08:08:44,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:44,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:08:44,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:44,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:08:44,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:44,913 INFO L87 Difference]: Start difference. First operand 961 states and 1327 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 08:08:45,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:45,030 INFO L93 Difference]: Finished difference Result 1184 states and 1609 transitions. [2023-12-16 08:08:45,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:08:45,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 93 [2023-12-16 08:08:45,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:45,032 INFO L225 Difference]: With dead ends: 1184 [2023-12-16 08:08:45,032 INFO L226 Difference]: Without dead ends: 308 [2023-12-16 08:08:45,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:45,034 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 48 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:45,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1085 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:08:45,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-12-16 08:08:45,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2023-12-16 08:08:45,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 275 states have (on average 1.6327272727272728) internal successors, (449), 277 states have internal predecessors, (449), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-16 08:08:45,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 499 transitions. [2023-12-16 08:08:45,049 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 499 transitions. Word has length 93 [2023-12-16 08:08:45,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:45,049 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 499 transitions. [2023-12-16 08:08:45,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 08:08:45,049 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 499 transitions. [2023-12-16 08:08:45,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:08:45,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:45,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:45,054 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 [2023-12-16 08:08:45,254 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 [2023-12-16 08:08:45,255 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:45,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:45,255 INFO L85 PathProgramCache]: Analyzing trace with hash 423959296, now seen corresponding path program 1 times [2023-12-16 08:08:45,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:45,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832014727] [2023-12-16 08:08:45,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:45,256 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 [2023-12-16 08:08:45,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:45,258 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) [2023-12-16 08:08:45,261 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 [2023-12-16 08:08:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:45,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:08:45,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:45,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:45,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:45,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:45,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832014727] [2023-12-16 08:08:45,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832014727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:45,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:45,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:08:45,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54392977] [2023-12-16 08:08:45,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:45,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:08:45,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:45,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:08:45,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:45,410 INFO L87 Difference]: Start difference. First operand 308 states and 499 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:45,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:45,467 INFO L93 Difference]: Finished difference Result 610 states and 989 transitions. [2023-12-16 08:08:45,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:08:45,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:08:45,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:45,469 INFO L225 Difference]: With dead ends: 610 [2023-12-16 08:08:45,469 INFO L226 Difference]: Without dead ends: 308 [2023-12-16 08:08:45,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:45,470 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 491 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:45,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 459 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 08:08:45,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-12-16 08:08:45,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2023-12-16 08:08:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 275 states have (on average 1.6290909090909091) internal successors, (448), 277 states have internal predecessors, (448), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-16 08:08:45,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 498 transitions. [2023-12-16 08:08:45,486 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 498 transitions. Word has length 142 [2023-12-16 08:08:45,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:45,486 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 498 transitions. [2023-12-16 08:08:45,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:45,487 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 498 transitions. [2023-12-16 08:08:45,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:08:45,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:45,488 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:45,508 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 [2023-12-16 08:08:45,694 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 [2023-12-16 08:08:45,694 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:45,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:45,694 INFO L85 PathProgramCache]: Analyzing trace with hash -974994306, now seen corresponding path program 1 times [2023-12-16 08:08:45,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:45,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216959142] [2023-12-16 08:08:45,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:45,695 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 [2023-12-16 08:08:45,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:45,696 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) [2023-12-16 08:08:45,726 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 [2023-12-16 08:08:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:45,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:08:45,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:45,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:45,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:45,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216959142] [2023-12-16 08:08:45,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216959142] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:45,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:45,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:08:45,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889276013] [2023-12-16 08:08:45,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:45,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:08:45,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:45,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:08:45,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:45,881 INFO L87 Difference]: Start difference. First operand 308 states and 498 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:45,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:45,949 INFO L93 Difference]: Finished difference Result 602 states and 972 transitions. [2023-12-16 08:08:45,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:08:45,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:08:45,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:45,951 INFO L225 Difference]: With dead ends: 602 [2023-12-16 08:08:45,951 INFO L226 Difference]: Without dead ends: 308 [2023-12-16 08:08:45,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:08:45,953 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 482 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:45,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 458 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 08:08:45,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-12-16 08:08:45,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2023-12-16 08:08:45,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 275 states have (on average 1.6254545454545455) internal successors, (447), 277 states have internal predecessors, (447), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-16 08:08:45,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 497 transitions. [2023-12-16 08:08:45,973 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 497 transitions. Word has length 142 [2023-12-16 08:08:45,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:45,973 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 497 transitions. [2023-12-16 08:08:45,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:45,973 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 497 transitions. [2023-12-16 08:08:45,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:08:45,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:45,974 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:45,994 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 [2023-12-16 08:08:46,177 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 [2023-12-16 08:08:46,177 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:46,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:46,178 INFO L85 PathProgramCache]: Analyzing trace with hash -540488708, now seen corresponding path program 1 times [2023-12-16 08:08:46,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:46,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215141702] [2023-12-16 08:08:46,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:46,179 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 [2023-12-16 08:08:46,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:46,180 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) [2023-12-16 08:08:46,183 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 [2023-12-16 08:08:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:46,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:46,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:46,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:46,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:46,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:46,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215141702] [2023-12-16 08:08:46,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215141702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:46,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:46,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:46,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178733045] [2023-12-16 08:08:46,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:46,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:08:46,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:46,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:08:46,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:08:46,393 INFO L87 Difference]: Start difference. First operand 308 states and 497 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:47,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:47,055 INFO L93 Difference]: Finished difference Result 931 states and 1518 transitions. [2023-12-16 08:08:47,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 08:08:47,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:08:47,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:47,059 INFO L225 Difference]: With dead ends: 931 [2023-12-16 08:08:47,059 INFO L226 Difference]: Without dead ends: 640 [2023-12-16 08:08:47,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:08:47,060 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 944 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:47,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 1284 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 08:08:47,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2023-12-16 08:08:47,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 613. [2023-12-16 08:08:47,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 554 states have (on average 1.6371841155234657) internal successors, (907), 557 states have internal predecessors, (907), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-16 08:08:47,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 996 transitions. [2023-12-16 08:08:47,085 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 996 transitions. Word has length 142 [2023-12-16 08:08:47,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:47,085 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 996 transitions. [2023-12-16 08:08:47,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:47,085 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 996 transitions. [2023-12-16 08:08:47,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:08:47,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:47,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:47,104 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 [2023-12-16 08:08:47,305 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 [2023-12-16 08:08:47,305 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:47,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:47,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1050462404, now seen corresponding path program 1 times [2023-12-16 08:08:47,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:47,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296977465] [2023-12-16 08:08:47,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:47,306 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 [2023-12-16 08:08:47,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:47,321 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) [2023-12-16 08:08:47,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-16 08:08:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:47,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:47,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:47,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:47,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:47,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296977465] [2023-12-16 08:08:47,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296977465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:47,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:47,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:47,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096014314] [2023-12-16 08:08:47,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:47,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:08:47,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:47,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:08:47,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:08:47,522 INFO L87 Difference]: Start difference. First operand 613 states and 996 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:47,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:47,934 INFO L93 Difference]: Finished difference Result 1209 states and 1971 transitions. [2023-12-16 08:08:47,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:08:47,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:08:47,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:47,937 INFO L225 Difference]: With dead ends: 1209 [2023-12-16 08:08:47,937 INFO L226 Difference]: Without dead ends: 613 [2023-12-16 08:08:47,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:08:47,938 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 666 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:47,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 803 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:08:47,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-12-16 08:08:47,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2023-12-16 08:08:47,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 554 states have (on average 1.6245487364620939) internal successors, (900), 557 states have internal predecessors, (900), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-16 08:08:47,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 989 transitions. [2023-12-16 08:08:47,963 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 989 transitions. Word has length 142 [2023-12-16 08:08:47,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:47,964 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 989 transitions. [2023-12-16 08:08:47,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:47,964 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 989 transitions. [2023-12-16 08:08:47,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:08:47,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:47,965 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:47,978 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 [2023-12-16 08:08:48,170 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 [2023-12-16 08:08:48,170 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:48,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:48,171 INFO L85 PathProgramCache]: Analyzing trace with hash -651271172, now seen corresponding path program 1 times [2023-12-16 08:08:48,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:48,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001216602] [2023-12-16 08:08:48,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:48,172 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 [2023-12-16 08:08:48,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:48,194 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) [2023-12-16 08:08:48,221 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 [2023-12-16 08:08:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:48,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:48,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:48,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:48,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:48,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001216602] [2023-12-16 08:08:48,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001216602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:48,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:48,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:48,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168704044] [2023-12-16 08:08:48,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:48,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:08:48,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:48,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:08:48,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:08:48,401 INFO L87 Difference]: Start difference. First operand 613 states and 989 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:48,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:48,826 INFO L93 Difference]: Finished difference Result 1209 states and 1957 transitions. [2023-12-16 08:08:48,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:08:48,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:08:48,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:48,832 INFO L225 Difference]: With dead ends: 1209 [2023-12-16 08:08:48,832 INFO L226 Difference]: Without dead ends: 613 [2023-12-16 08:08:48,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:08:48,834 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 659 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:48,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 796 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:08:48,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-12-16 08:08:48,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2023-12-16 08:08:48,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 554 states have (on average 1.611913357400722) internal successors, (893), 557 states have internal predecessors, (893), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-16 08:08:48,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 982 transitions. [2023-12-16 08:08:48,864 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 982 transitions. Word has length 142 [2023-12-16 08:08:48,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:48,864 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 982 transitions. [2023-12-16 08:08:48,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:48,865 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 982 transitions. [2023-12-16 08:08:48,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:08:48,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:48,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:48,873 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 (19)] Ended with exit code 0 [2023-12-16 08:08:49,071 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 [2023-12-16 08:08:49,074 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:49,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:49,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1743906374, now seen corresponding path program 1 times [2023-12-16 08:08:49,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:49,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947789239] [2023-12-16 08:08:49,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:49,075 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 [2023-12-16 08:08:49,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:49,077 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) [2023-12-16 08:08:49,108 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 [2023-12-16 08:08:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:49,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:49,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:49,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:49,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:49,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947789239] [2023-12-16 08:08:49,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947789239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:49,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:49,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:49,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507930022] [2023-12-16 08:08:49,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:49,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:08:49,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:49,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:08:49,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:08:49,317 INFO L87 Difference]: Start difference. First operand 613 states and 982 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:49,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:49,714 INFO L93 Difference]: Finished difference Result 1209 states and 1943 transitions. [2023-12-16 08:08:49,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:08:49,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:08:49,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:49,717 INFO L225 Difference]: With dead ends: 1209 [2023-12-16 08:08:49,717 INFO L226 Difference]: Without dead ends: 613 [2023-12-16 08:08:49,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:08:49,719 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 653 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:49,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 789 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:08:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-12-16 08:08:49,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2023-12-16 08:08:49,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 554 states have (on average 1.5992779783393503) internal successors, (886), 557 states have internal predecessors, (886), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-16 08:08:49,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 975 transitions. [2023-12-16 08:08:49,746 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 975 transitions. Word has length 142 [2023-12-16 08:08:49,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:49,746 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 975 transitions. [2023-12-16 08:08:49,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:49,746 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 975 transitions. [2023-12-16 08:08:49,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:08:49,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:49,747 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:49,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-16 08:08:49,952 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 [2023-12-16 08:08:49,953 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:49,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:49,953 INFO L85 PathProgramCache]: Analyzing trace with hash 874521850, now seen corresponding path program 1 times [2023-12-16 08:08:49,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:49,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262582931] [2023-12-16 08:08:49,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:49,954 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 [2023-12-16 08:08:49,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:49,955 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) [2023-12-16 08:08:49,962 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 [2023-12-16 08:08:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:50,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:50,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:50,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:50,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:50,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262582931] [2023-12-16 08:08:50,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262582931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:50,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:50,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:50,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346985731] [2023-12-16 08:08:50,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:50,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:08:50,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:50,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:08:50,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:08:50,142 INFO L87 Difference]: Start difference. First operand 613 states and 975 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:50,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:50,489 INFO L93 Difference]: Finished difference Result 1209 states and 1929 transitions. [2023-12-16 08:08:50,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:08:50,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:08:50,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:50,492 INFO L225 Difference]: With dead ends: 1209 [2023-12-16 08:08:50,492 INFO L226 Difference]: Without dead ends: 613 [2023-12-16 08:08:50,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:08:50,493 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 647 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:50,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 782 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:08:50,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-12-16 08:08:50,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2023-12-16 08:08:50,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 554 states have (on average 1.5866425992779782) internal successors, (879), 557 states have internal predecessors, (879), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-16 08:08:50,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 968 transitions. [2023-12-16 08:08:50,523 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 968 transitions. Word has length 142 [2023-12-16 08:08:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:50,523 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 968 transitions. [2023-12-16 08:08:50,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:50,523 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 968 transitions. [2023-12-16 08:08:50,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:08:50,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:50,524 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:50,541 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 [2023-12-16 08:08:50,730 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 [2023-12-16 08:08:50,730 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:50,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:50,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1811959366, now seen corresponding path program 1 times [2023-12-16 08:08:50,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:50,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829986570] [2023-12-16 08:08:50,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:50,731 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:08:50,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:50,733 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) [2023-12-16 08:08:50,764 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 [2023-12-16 08:08:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:50,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:50,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:50,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:50,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:50,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829986570] [2023-12-16 08:08:50,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829986570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:50,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:50,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:50,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121372024] [2023-12-16 08:08:50,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:50,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:08:50,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:50,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:08:50,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:08:50,906 INFO L87 Difference]: Start difference. First operand 613 states and 968 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:51,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:51,271 INFO L93 Difference]: Finished difference Result 1209 states and 1915 transitions. [2023-12-16 08:08:51,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:08:51,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:08:51,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:51,274 INFO L225 Difference]: With dead ends: 1209 [2023-12-16 08:08:51,274 INFO L226 Difference]: Without dead ends: 613 [2023-12-16 08:08:51,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:08:51,275 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 641 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:51,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 775 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:08:51,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-12-16 08:08:51,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2023-12-16 08:08:51,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 554 states have (on average 1.5740072202166064) internal successors, (872), 557 states have internal predecessors, (872), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-16 08:08:51,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 961 transitions. [2023-12-16 08:08:51,304 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 961 transitions. Word has length 142 [2023-12-16 08:08:51,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:51,305 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 961 transitions. [2023-12-16 08:08:51,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:51,305 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 961 transitions. [2023-12-16 08:08:51,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:08:51,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:51,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:51,324 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 [2023-12-16 08:08:51,510 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 [2023-12-16 08:08:51,511 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:51,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:51,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1482978054, now seen corresponding path program 1 times [2023-12-16 08:08:51,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:51,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638615809] [2023-12-16 08:08:51,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:51,512 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 [2023-12-16 08:08:51,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:51,513 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) [2023-12-16 08:08:51,514 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 [2023-12-16 08:08:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:51,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:51,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:51,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:51,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:51,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638615809] [2023-12-16 08:08:51,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638615809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:51,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:51,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:51,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471094163] [2023-12-16 08:08:51,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:51,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:08:51,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:51,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:08:51,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:08:51,711 INFO L87 Difference]: Start difference. First operand 613 states and 961 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:52,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:52,061 INFO L93 Difference]: Finished difference Result 1209 states and 1901 transitions. [2023-12-16 08:08:52,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:08:52,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:08:52,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:52,065 INFO L225 Difference]: With dead ends: 1209 [2023-12-16 08:08:52,065 INFO L226 Difference]: Without dead ends: 613 [2023-12-16 08:08:52,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:08:52,067 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 635 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:52,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 768 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:08:52,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-12-16 08:08:52,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2023-12-16 08:08:52,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 554 states have (on average 1.5613718411552346) internal successors, (865), 557 states have internal predecessors, (865), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-16 08:08:52,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 954 transitions. [2023-12-16 08:08:52,133 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 954 transitions. Word has length 142 [2023-12-16 08:08:52,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:52,133 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 954 transitions. [2023-12-16 08:08:52,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:52,134 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 954 transitions. [2023-12-16 08:08:52,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:08:52,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:52,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:52,142 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 [2023-12-16 08:08:52,335 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 [2023-12-16 08:08:52,335 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:52,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:52,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1888007750, now seen corresponding path program 1 times [2023-12-16 08:08:52,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:52,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345302661] [2023-12-16 08:08:52,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:52,336 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 [2023-12-16 08:08:52,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:52,353 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) [2023-12-16 08:08:52,385 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 [2023-12-16 08:08:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:52,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:52,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:52,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:52,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:52,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:52,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345302661] [2023-12-16 08:08:52,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345302661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:52,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:52,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:52,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342478142] [2023-12-16 08:08:52,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:52,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:08:52,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:52,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:08:52,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:08:52,536 INFO L87 Difference]: Start difference. First operand 613 states and 954 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:52,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:52,878 INFO L93 Difference]: Finished difference Result 1209 states and 1887 transitions. [2023-12-16 08:08:52,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:08:52,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:08:52,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:52,885 INFO L225 Difference]: With dead ends: 1209 [2023-12-16 08:08:52,885 INFO L226 Difference]: Without dead ends: 613 [2023-12-16 08:08:52,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:08:52,888 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 629 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:52,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 761 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:08:52,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-12-16 08:08:52,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2023-12-16 08:08:52,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 554 states have (on average 1.5487364620938628) internal successors, (858), 557 states have internal predecessors, (858), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-16 08:08:52,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 947 transitions. [2023-12-16 08:08:52,922 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 947 transitions. Word has length 142 [2023-12-16 08:08:52,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:52,922 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 947 transitions. [2023-12-16 08:08:52,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:52,922 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 947 transitions. [2023-12-16 08:08:52,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:08:52,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:52,923 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:52,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-16 08:08:53,127 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 [2023-12-16 08:08:53,128 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:53,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:53,128 INFO L85 PathProgramCache]: Analyzing trace with hash 315684090, now seen corresponding path program 1 times [2023-12-16 08:08:53,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:53,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713925950] [2023-12-16 08:08:53,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:53,129 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:08:53,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:53,130 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) [2023-12-16 08:08:53,162 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 [2023-12-16 08:08:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:53,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:53,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:53,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:53,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:53,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:53,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713925950] [2023-12-16 08:08:53,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713925950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:53,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:53,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:53,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99223804] [2023-12-16 08:08:53,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:53,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:08:53,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:53,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:08:53,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:08:53,311 INFO L87 Difference]: Start difference. First operand 613 states and 947 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:53,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:53,703 INFO L93 Difference]: Finished difference Result 1209 states and 1873 transitions. [2023-12-16 08:08:53,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:08:53,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:08:53,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:53,706 INFO L225 Difference]: With dead ends: 1209 [2023-12-16 08:08:53,706 INFO L226 Difference]: Without dead ends: 613 [2023-12-16 08:08:53,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:08:53,707 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 623 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:53,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 754 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:08:53,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-12-16 08:08:53,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2023-12-16 08:08:53,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 554 states have (on average 1.536101083032491) internal successors, (851), 557 states have internal predecessors, (851), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-16 08:08:53,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 940 transitions. [2023-12-16 08:08:53,755 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 940 transitions. Word has length 142 [2023-12-16 08:08:53,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:53,755 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 940 transitions. [2023-12-16 08:08:53,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:53,755 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 940 transitions. [2023-12-16 08:08:53,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:08:53,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:53,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:53,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-16 08:08:53,961 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 [2023-12-16 08:08:53,961 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:53,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:53,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1275797062, now seen corresponding path program 1 times [2023-12-16 08:08:53,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:53,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196849526] [2023-12-16 08:08:53,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:53,963 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 [2023-12-16 08:08:53,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:53,979 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) [2023-12-16 08:08:54,011 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 [2023-12-16 08:08:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:54,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:54,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:54,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:54,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:54,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196849526] [2023-12-16 08:08:54,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196849526] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:54,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:54,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:54,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353096291] [2023-12-16 08:08:54,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:54,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:08:54,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:54,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:08:54,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:08:54,164 INFO L87 Difference]: Start difference. First operand 613 states and 940 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:54,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:54,609 INFO L93 Difference]: Finished difference Result 1351 states and 2091 transitions. [2023-12-16 08:08:54,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:08:54,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:08:54,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:54,612 INFO L225 Difference]: With dead ends: 1351 [2023-12-16 08:08:54,613 INFO L226 Difference]: Without dead ends: 755 [2023-12-16 08:08:54,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:08:54,615 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 712 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:54,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 748 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:08:54,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2023-12-16 08:08:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 755. [2023-12-16 08:08:54,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 690 states have (on average 1.5130434782608695) internal successors, (1044), 693 states have internal predecessors, (1044), 47 states have call successors, (47), 17 states have call predecessors, (47), 17 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-16 08:08:54,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1137 transitions. [2023-12-16 08:08:54,660 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1137 transitions. Word has length 142 [2023-12-16 08:08:54,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:54,661 INFO L495 AbstractCegarLoop]: Abstraction has 755 states and 1137 transitions. [2023-12-16 08:08:54,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:54,661 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1137 transitions. [2023-12-16 08:08:54,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:08:54,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:54,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:54,678 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 [2023-12-16 08:08:54,867 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 [2023-12-16 08:08:54,867 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:54,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:54,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1629114553, now seen corresponding path program 1 times [2023-12-16 08:08:54,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:54,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539712654] [2023-12-16 08:08:54,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:54,869 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 [2023-12-16 08:08:54,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:54,870 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) [2023-12-16 08:08:54,901 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 [2023-12-16 08:08:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:54,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:54,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:55,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:55,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:55,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539712654] [2023-12-16 08:08:55,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539712654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:55,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:55,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:55,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103867468] [2023-12-16 08:08:55,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:55,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:08:55,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:55,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:08:55,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:08:55,077 INFO L87 Difference]: Start difference. First operand 755 states and 1137 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:55,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:55,502 INFO L93 Difference]: Finished difference Result 1635 states and 2485 transitions. [2023-12-16 08:08:55,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:08:55,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:08:55,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:55,505 INFO L225 Difference]: With dead ends: 1635 [2023-12-16 08:08:55,505 INFO L226 Difference]: Without dead ends: 897 [2023-12-16 08:08:55,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:08:55,509 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 705 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:55,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 741 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:08:55,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-12-16 08:08:55,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2023-12-16 08:08:55,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 826 states have (on average 1.4927360774818401) internal successors, (1233), 829 states have internal predecessors, (1233), 49 states have call successors, (49), 21 states have call predecessors, (49), 21 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-16 08:08:55,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1330 transitions. [2023-12-16 08:08:55,555 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1330 transitions. Word has length 142 [2023-12-16 08:08:55,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:55,555 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 1330 transitions. [2023-12-16 08:08:55,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:55,555 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1330 transitions. [2023-12-16 08:08:55,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:08:55,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:55,556 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:55,561 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 [2023-12-16 08:08:55,760 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 [2023-12-16 08:08:55,761 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:55,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:55,761 INFO L85 PathProgramCache]: Analyzing trace with hash -527721479, now seen corresponding path program 1 times [2023-12-16 08:08:55,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:55,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150081108] [2023-12-16 08:08:55,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:55,762 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 [2023-12-16 08:08:55,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:55,777 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) [2023-12-16 08:08:55,778 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 [2023-12-16 08:08:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:55,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:55,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:55,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:55,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:55,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:55,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150081108] [2023-12-16 08:08:55,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150081108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:55,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:55,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:55,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10836664] [2023-12-16 08:08:55,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:55,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:08:55,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:55,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:08:55,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:08:55,976 INFO L87 Difference]: Start difference. First operand 897 states and 1330 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:56,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:56,480 INFO L93 Difference]: Finished difference Result 1919 states and 2871 transitions. [2023-12-16 08:08:56,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:08:56,481 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:08:56,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:56,484 INFO L225 Difference]: With dead ends: 1919 [2023-12-16 08:08:56,484 INFO L226 Difference]: Without dead ends: 1039 [2023-12-16 08:08:56,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:08:56,486 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 699 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:56,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 734 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:08:56,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2023-12-16 08:08:56,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1039. [2023-12-16 08:08:56,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 962 states have (on average 1.474012474012474) internal successors, (1418), 965 states have internal predecessors, (1418), 51 states have call successors, (51), 25 states have call predecessors, (51), 25 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-16 08:08:56,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1519 transitions. [2023-12-16 08:08:56,530 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1519 transitions. Word has length 142 [2023-12-16 08:08:56,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:56,530 INFO L495 AbstractCegarLoop]: Abstraction has 1039 states and 1519 transitions. [2023-12-16 08:08:56,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:56,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1519 transitions. [2023-12-16 08:08:56,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:08:56,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:56,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:56,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-16 08:08:56,735 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 [2023-12-16 08:08:56,735 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:56,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:56,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2073882938, now seen corresponding path program 1 times [2023-12-16 08:08:56,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:56,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997455875] [2023-12-16 08:08:56,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:56,738 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 [2023-12-16 08:08:56,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:56,740 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) [2023-12-16 08:08:56,742 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 [2023-12-16 08:08:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:56,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:56,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:56,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:56,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:56,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997455875] [2023-12-16 08:08:56,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997455875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:56,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:56,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:56,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113604104] [2023-12-16 08:08:56,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:56,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:08:56,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:56,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:08:56,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:08:56,939 INFO L87 Difference]: Start difference. First operand 1039 states and 1519 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:57,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:57,400 INFO L93 Difference]: Finished difference Result 2203 states and 3249 transitions. [2023-12-16 08:08:57,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:08:57,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:08:57,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:57,404 INFO L225 Difference]: With dead ends: 2203 [2023-12-16 08:08:57,404 INFO L226 Difference]: Without dead ends: 1181 [2023-12-16 08:08:57,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:08:57,407 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 692 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:57,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 727 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:08:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2023-12-16 08:08:57,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1181. [2023-12-16 08:08:57,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 1098 states have (on average 1.4562841530054644) internal successors, (1599), 1101 states have internal predecessors, (1599), 53 states have call successors, (53), 29 states have call predecessors, (53), 29 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2023-12-16 08:08:57,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1704 transitions. [2023-12-16 08:08:57,483 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1704 transitions. Word has length 142 [2023-12-16 08:08:57,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:57,483 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1704 transitions. [2023-12-16 08:08:57,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:57,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1704 transitions. [2023-12-16 08:08:57,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:08:57,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:57,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:57,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-16 08:08:57,688 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 [2023-12-16 08:08:57,688 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:57,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:57,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1097337978, now seen corresponding path program 1 times [2023-12-16 08:08:57,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:57,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797133328] [2023-12-16 08:08:57,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:57,690 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 [2023-12-16 08:08:57,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:57,691 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) [2023-12-16 08:08:57,720 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 [2023-12-16 08:08:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:57,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:57,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:57,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:57,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:57,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797133328] [2023-12-16 08:08:57,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797133328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:57,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:57,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:57,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082741279] [2023-12-16 08:08:57,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:57,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:08:57,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:57,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:08:57,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:08:57,886 INFO L87 Difference]: Start difference. First operand 1181 states and 1704 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:58,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:58,358 INFO L93 Difference]: Finished difference Result 2487 states and 3619 transitions. [2023-12-16 08:08:58,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:08:58,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:08:58,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:58,362 INFO L225 Difference]: With dead ends: 2487 [2023-12-16 08:08:58,362 INFO L226 Difference]: Without dead ends: 1323 [2023-12-16 08:08:58,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:08:58,366 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 685 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:58,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 720 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:08:58,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2023-12-16 08:08:58,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1323. [2023-12-16 08:08:58,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 1234 states have (on average 1.4392220421393842) internal successors, (1776), 1237 states have internal predecessors, (1776), 55 states have call successors, (55), 33 states have call predecessors, (55), 33 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2023-12-16 08:08:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1885 transitions. [2023-12-16 08:08:58,426 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1885 transitions. Word has length 142 [2023-12-16 08:08:58,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:58,426 INFO L495 AbstractCegarLoop]: Abstraction has 1323 states and 1885 transitions. [2023-12-16 08:08:58,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:58,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1885 transitions. [2023-12-16 08:08:58,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:08:58,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:58,427 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:58,441 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 [2023-12-16 08:08:58,631 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 [2023-12-16 08:08:58,631 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:58,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:58,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1717374715, now seen corresponding path program 1 times [2023-12-16 08:08:58,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:58,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53166475] [2023-12-16 08:08:58,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:58,632 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 [2023-12-16 08:08:58,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:58,634 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) [2023-12-16 08:08:58,635 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 [2023-12-16 08:08:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:58,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:58,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:58,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:58,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:58,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53166475] [2023-12-16 08:08:58,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53166475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:58,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:58,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:58,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898236795] [2023-12-16 08:08:58,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:58,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:08:58,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:58,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:08:58,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:08:58,868 INFO L87 Difference]: Start difference. First operand 1323 states and 1885 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:59,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:08:59,374 INFO L93 Difference]: Finished difference Result 2771 states and 3981 transitions. [2023-12-16 08:08:59,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:08:59,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:08:59,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:08:59,378 INFO L225 Difference]: With dead ends: 2771 [2023-12-16 08:08:59,378 INFO L226 Difference]: Without dead ends: 1465 [2023-12-16 08:08:59,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:08:59,381 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 678 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:08:59,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 713 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:08:59,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2023-12-16 08:08:59,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1465. [2023-12-16 08:08:59,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1370 states have (on average 1.4226277372262774) internal successors, (1949), 1373 states have internal predecessors, (1949), 57 states have call successors, (57), 37 states have call predecessors, (57), 37 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2023-12-16 08:08:59,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2062 transitions. [2023-12-16 08:08:59,451 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2062 transitions. Word has length 142 [2023-12-16 08:08:59,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:08:59,452 INFO L495 AbstractCegarLoop]: Abstraction has 1465 states and 2062 transitions. [2023-12-16 08:08:59,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:08:59,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2062 transitions. [2023-12-16 08:08:59,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:08:59,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:08:59,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:08:59,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-16 08:08:59,658 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 [2023-12-16 08:08:59,658 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:08:59,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:08:59,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1043914790, now seen corresponding path program 1 times [2023-12-16 08:08:59,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:08:59,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454707062] [2023-12-16 08:08:59,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:08:59,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:08:59,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:08:59,673 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) [2023-12-16 08:08:59,674 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 (32)] Waiting until timeout for monitored process [2023-12-16 08:08:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:08:59,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:08:59,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:08:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:08:59,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:08:59,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:08:59,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454707062] [2023-12-16 08:08:59,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454707062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:08:59,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:08:59,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:08:59,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540379398] [2023-12-16 08:08:59,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:08:59,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:08:59,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:08:59,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:08:59,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:08:59,842 INFO L87 Difference]: Start difference. First operand 1465 states and 2062 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:00,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:00,370 INFO L93 Difference]: Finished difference Result 3055 states and 4335 transitions. [2023-12-16 08:09:00,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:09:00,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:09:00,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:00,398 INFO L225 Difference]: With dead ends: 3055 [2023-12-16 08:09:00,398 INFO L226 Difference]: Without dead ends: 1607 [2023-12-16 08:09:00,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:09:00,405 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 671 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:00,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 706 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:09:00,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2023-12-16 08:09:00,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1607. [2023-12-16 08:09:00,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1506 states have (on average 1.406374501992032) internal successors, (2118), 1509 states have internal predecessors, (2118), 59 states have call successors, (59), 41 states have call predecessors, (59), 41 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2023-12-16 08:09:00,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2235 transitions. [2023-12-16 08:09:00,479 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2235 transitions. Word has length 142 [2023-12-16 08:09:00,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:00,480 INFO L495 AbstractCegarLoop]: Abstraction has 1607 states and 2235 transitions. [2023-12-16 08:09:00,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2235 transitions. [2023-12-16 08:09:00,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:09:00,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:00,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:00,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:00,686 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 [2023-12-16 08:09:00,687 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:00,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:00,687 INFO L85 PathProgramCache]: Analyzing trace with hash 822332570, now seen corresponding path program 1 times [2023-12-16 08:09:00,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:00,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166933428] [2023-12-16 08:09:00,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:00,688 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 [2023-12-16 08:09:00,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:00,705 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) [2023-12-16 08:09:00,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-16 08:09:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:00,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:00,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:00,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:00,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:00,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:00,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166933428] [2023-12-16 08:09:00,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166933428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:00,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:00,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:00,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157889592] [2023-12-16 08:09:00,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:00,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:09:00,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:00,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:09:00,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:00,878 INFO L87 Difference]: Start difference. First operand 1607 states and 2235 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:01,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:01,318 INFO L93 Difference]: Finished difference Result 3339 states and 4681 transitions. [2023-12-16 08:09:01,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:09:01,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:09:01,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:01,322 INFO L225 Difference]: With dead ends: 3339 [2023-12-16 08:09:01,322 INFO L226 Difference]: Without dead ends: 1749 [2023-12-16 08:09:01,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:09:01,324 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 663 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:01,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 699 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:09:01,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2023-12-16 08:09:01,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1749. [2023-12-16 08:09:01,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1749 states, 1642 states have (on average 1.3903775883069427) internal successors, (2283), 1645 states have internal predecessors, (2283), 61 states have call successors, (61), 45 states have call predecessors, (61), 45 states have return successors, (60), 59 states have call predecessors, (60), 59 states have call successors, (60) [2023-12-16 08:09:01,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2404 transitions. [2023-12-16 08:09:01,397 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2404 transitions. Word has length 142 [2023-12-16 08:09:01,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:01,397 INFO L495 AbstractCegarLoop]: Abstraction has 1749 states and 2404 transitions. [2023-12-16 08:09:01,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:01,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2404 transitions. [2023-12-16 08:09:01,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:09:01,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:01,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:01,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:01,602 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 [2023-12-16 08:09:01,603 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:01,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:01,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2083340712, now seen corresponding path program 1 times [2023-12-16 08:09:01,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:01,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146791643] [2023-12-16 08:09:01,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:01,604 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 [2023-12-16 08:09:01,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:01,607 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) [2023-12-16 08:09:01,608 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 [2023-12-16 08:09:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:01,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:01,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:01,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:01,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:01,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:01,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146791643] [2023-12-16 08:09:01,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146791643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:01,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:01,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:01,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455908788] [2023-12-16 08:09:01,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:01,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:09:01,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:01,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:09:01,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:01,785 INFO L87 Difference]: Start difference. First operand 1749 states and 2404 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:02,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:02,238 INFO L93 Difference]: Finished difference Result 3623 states and 5019 transitions. [2023-12-16 08:09:02,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:09:02,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:09:02,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:02,242 INFO L225 Difference]: With dead ends: 3623 [2023-12-16 08:09:02,242 INFO L226 Difference]: Without dead ends: 1891 [2023-12-16 08:09:02,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:09:02,244 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 656 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:02,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 692 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:09:02,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2023-12-16 08:09:02,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1891. [2023-12-16 08:09:02,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1778 states have (on average 1.3745781777277841) internal successors, (2444), 1781 states have internal predecessors, (2444), 63 states have call successors, (63), 49 states have call predecessors, (63), 49 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2023-12-16 08:09:02,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2569 transitions. [2023-12-16 08:09:02,343 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2569 transitions. Word has length 142 [2023-12-16 08:09:02,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:02,344 INFO L495 AbstractCegarLoop]: Abstraction has 1891 states and 2569 transitions. [2023-12-16 08:09:02,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:02,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2569 transitions. [2023-12-16 08:09:02,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:09:02,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:02,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:02,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:02,549 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 [2023-12-16 08:09:02,549 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:02,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:02,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1340984137, now seen corresponding path program 1 times [2023-12-16 08:09:02,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:02,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113927150] [2023-12-16 08:09:02,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:02,550 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 [2023-12-16 08:09:02,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:02,561 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) [2023-12-16 08:09:02,562 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 [2023-12-16 08:09:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:02,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:02,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:02,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:02,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:02,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113927150] [2023-12-16 08:09:02,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113927150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:02,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:02,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:02,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582414216] [2023-12-16 08:09:02,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:02,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:09:02,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:02,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:09:02,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:02,733 INFO L87 Difference]: Start difference. First operand 1891 states and 2569 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:03,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:03,172 INFO L93 Difference]: Finished difference Result 3907 states and 5349 transitions. [2023-12-16 08:09:03,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:09:03,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:09:03,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:03,182 INFO L225 Difference]: With dead ends: 3907 [2023-12-16 08:09:03,182 INFO L226 Difference]: Without dead ends: 2033 [2023-12-16 08:09:03,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:09:03,187 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 649 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:03,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 685 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:09:03,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2023-12-16 08:09:03,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 2033. [2023-12-16 08:09:03,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 1914 states have (on average 1.358934169278997) internal successors, (2601), 1917 states have internal predecessors, (2601), 65 states have call successors, (65), 53 states have call predecessors, (65), 53 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2023-12-16 08:09:03,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 2730 transitions. [2023-12-16 08:09:03,418 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 2730 transitions. Word has length 142 [2023-12-16 08:09:03,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:03,419 INFO L495 AbstractCegarLoop]: Abstraction has 2033 states and 2730 transitions. [2023-12-16 08:09:03,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:03,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 2730 transitions. [2023-12-16 08:09:03,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:09:03,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:03,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:03,424 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 [2023-12-16 08:09:03,624 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 [2023-12-16 08:09:03,624 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:03,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:03,624 INFO L85 PathProgramCache]: Analyzing trace with hash -601669257, now seen corresponding path program 1 times [2023-12-16 08:09:03,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:03,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523732613] [2023-12-16 08:09:03,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:03,625 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 [2023-12-16 08:09:03,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:03,626 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) [2023-12-16 08:09:03,628 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 [2023-12-16 08:09:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:03,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:03,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:03,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:03,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:03,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523732613] [2023-12-16 08:09:03,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523732613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:03,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:03,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:03,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421150734] [2023-12-16 08:09:03,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:03,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:03,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:03,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:03,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:03,760 INFO L87 Difference]: Start difference. First operand 2033 states and 2730 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:03,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:03,922 INFO L93 Difference]: Finished difference Result 4176 states and 5650 transitions. [2023-12-16 08:09:03,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:09:03,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:09:03,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:03,928 INFO L225 Difference]: With dead ends: 4176 [2023-12-16 08:09:03,928 INFO L226 Difference]: Without dead ends: 2161 [2023-12-16 08:09:03,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:03,933 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 92 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:03,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 1198 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:09:03,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2023-12-16 08:09:04,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2037. [2023-12-16 08:09:04,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 1918 states have (on average 1.3477580813347236) internal successors, (2585), 1921 states have internal predecessors, (2585), 65 states have call successors, (65), 53 states have call predecessors, (65), 53 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2023-12-16 08:09:04,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 2714 transitions. [2023-12-16 08:09:04,079 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 2714 transitions. Word has length 142 [2023-12-16 08:09:04,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:04,080 INFO L495 AbstractCegarLoop]: Abstraction has 2037 states and 2714 transitions. [2023-12-16 08:09:04,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:04,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 2714 transitions. [2023-12-16 08:09:04,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:09:04,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:04,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:04,102 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 (36)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:04,281 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 [2023-12-16 08:09:04,282 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:04,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:04,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2074323125, now seen corresponding path program 1 times [2023-12-16 08:09:04,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:04,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257345723] [2023-12-16 08:09:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:04,283 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 [2023-12-16 08:09:04,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:04,297 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) [2023-12-16 08:09:04,321 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 [2023-12-16 08:09:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:04,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:04,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:04,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:04,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:04,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257345723] [2023-12-16 08:09:04,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257345723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:04,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:04,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:04,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366546570] [2023-12-16 08:09:04,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:04,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:04,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:04,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:04,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:04,469 INFO L87 Difference]: Start difference. First operand 2037 states and 2714 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:04,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:04,662 INFO L93 Difference]: Finished difference Result 4172 states and 5602 transitions. [2023-12-16 08:09:04,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:09:04,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:09:04,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:04,668 INFO L225 Difference]: With dead ends: 4172 [2023-12-16 08:09:04,668 INFO L226 Difference]: Without dead ends: 2153 [2023-12-16 08:09:04,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:04,671 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 83 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:04,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1199 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:09:04,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2023-12-16 08:09:04,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2041. [2023-12-16 08:09:04,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1922 states have (on average 1.3366285119667014) internal successors, (2569), 1925 states have internal predecessors, (2569), 65 states have call successors, (65), 53 states have call predecessors, (65), 53 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2023-12-16 08:09:04,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2698 transitions. [2023-12-16 08:09:04,758 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2698 transitions. Word has length 142 [2023-12-16 08:09:04,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:04,758 INFO L495 AbstractCegarLoop]: Abstraction has 2041 states and 2698 transitions. [2023-12-16 08:09:04,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:04,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2698 transitions. [2023-12-16 08:09:04,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:09:04,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:04,759 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:04,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:04,965 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 [2023-12-16 08:09:04,965 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:04,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:04,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1303589559, now seen corresponding path program 1 times [2023-12-16 08:09:04,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:04,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459511350] [2023-12-16 08:09:04,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:04,967 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 [2023-12-16 08:09:04,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:04,968 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) [2023-12-16 08:09:04,969 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 [2023-12-16 08:09:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:05,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:05,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:05,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:05,116 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:05,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:05,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459511350] [2023-12-16 08:09:05,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459511350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:05,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:05,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:05,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585138853] [2023-12-16 08:09:05,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:05,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:05,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:05,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:05,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:05,119 INFO L87 Difference]: Start difference. First operand 2041 states and 2698 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:05,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:05,285 INFO L93 Difference]: Finished difference Result 4168 states and 5554 transitions. [2023-12-16 08:09:05,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:09:05,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:09:05,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:05,291 INFO L225 Difference]: With dead ends: 4168 [2023-12-16 08:09:05,291 INFO L226 Difference]: Without dead ends: 2145 [2023-12-16 08:09:05,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:05,294 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 74 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:05,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1200 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:09:05,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2023-12-16 08:09:05,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 2045. [2023-12-16 08:09:05,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2045 states, 1926 states have (on average 1.3255451713395638) internal successors, (2553), 1929 states have internal predecessors, (2553), 65 states have call successors, (65), 53 states have call predecessors, (65), 53 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2023-12-16 08:09:05,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 2682 transitions. [2023-12-16 08:09:05,383 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 2682 transitions. Word has length 142 [2023-12-16 08:09:05,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:05,383 INFO L495 AbstractCegarLoop]: Abstraction has 2045 states and 2682 transitions. [2023-12-16 08:09:05,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:05,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 2682 transitions. [2023-12-16 08:09:05,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:09:05,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:05,384 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:05,394 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 [2023-12-16 08:09:05,589 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 [2023-12-16 08:09:05,589 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:05,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:05,590 INFO L85 PathProgramCache]: Analyzing trace with hash -575541387, now seen corresponding path program 1 times [2023-12-16 08:09:05,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:05,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690551610] [2023-12-16 08:09:05,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:05,591 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 [2023-12-16 08:09:05,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:05,592 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) [2023-12-16 08:09:05,594 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 [2023-12-16 08:09:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:05,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:05,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:05,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:05,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:05,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690551610] [2023-12-16 08:09:05,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690551610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:05,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:05,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:05,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168120307] [2023-12-16 08:09:05,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:05,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:05,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:05,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:05,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:05,723 INFO L87 Difference]: Start difference. First operand 2045 states and 2682 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:05,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:05,871 INFO L93 Difference]: Finished difference Result 4164 states and 5506 transitions. [2023-12-16 08:09:05,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:09:05,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:09:05,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:05,889 INFO L225 Difference]: With dead ends: 4164 [2023-12-16 08:09:05,889 INFO L226 Difference]: Without dead ends: 2137 [2023-12-16 08:09:05,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:05,891 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 65 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:05,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1201 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:09:05,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2023-12-16 08:09:05,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2049. [2023-12-16 08:09:05,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 1930 states have (on average 1.3145077720207254) internal successors, (2537), 1933 states have internal predecessors, (2537), 65 states have call successors, (65), 53 states have call predecessors, (65), 53 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2023-12-16 08:09:05,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 2666 transitions. [2023-12-16 08:09:05,972 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 2666 transitions. Word has length 142 [2023-12-16 08:09:05,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:05,972 INFO L495 AbstractCegarLoop]: Abstraction has 2049 states and 2666 transitions. [2023-12-16 08:09:05,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:05,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 2666 transitions. [2023-12-16 08:09:05,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:09:05,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:05,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:05,992 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 [2023-12-16 08:09:06,177 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 [2023-12-16 08:09:06,178 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:06,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:06,178 INFO L85 PathProgramCache]: Analyzing trace with hash -335301641, now seen corresponding path program 1 times [2023-12-16 08:09:06,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:06,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351852171] [2023-12-16 08:09:06,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:06,179 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 [2023-12-16 08:09:06,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:06,180 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) [2023-12-16 08:09:06,228 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 [2023-12-16 08:09:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:06,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:06,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:06,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:06,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:06,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351852171] [2023-12-16 08:09:06,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351852171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:06,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:06,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:06,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936857874] [2023-12-16 08:09:06,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:06,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:06,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:06,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:06,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:06,326 INFO L87 Difference]: Start difference. First operand 2049 states and 2666 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:06,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:06,481 INFO L93 Difference]: Finished difference Result 4160 states and 5458 transitions. [2023-12-16 08:09:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:09:06,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:09:06,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:06,490 INFO L225 Difference]: With dead ends: 4160 [2023-12-16 08:09:06,490 INFO L226 Difference]: Without dead ends: 2129 [2023-12-16 08:09:06,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:06,493 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 56 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:06,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1202 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:09:06,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2023-12-16 08:09:06,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 2053. [2023-12-16 08:09:06,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 1934 states have (on average 1.3035160289555325) internal successors, (2521), 1937 states have internal predecessors, (2521), 65 states have call successors, (65), 53 states have call predecessors, (65), 53 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2023-12-16 08:09:06,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 2650 transitions. [2023-12-16 08:09:06,597 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 2650 transitions. Word has length 142 [2023-12-16 08:09:06,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:06,597 INFO L495 AbstractCegarLoop]: Abstraction has 2053 states and 2650 transitions. [2023-12-16 08:09:06,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:06,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 2650 transitions. [2023-12-16 08:09:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:09:06,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:06,598 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:06,614 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 [2023-12-16 08:09:06,804 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 [2023-12-16 08:09:06,804 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:06,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:06,804 INFO L85 PathProgramCache]: Analyzing trace with hash 551921205, now seen corresponding path program 1 times [2023-12-16 08:09:06,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:06,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634951460] [2023-12-16 08:09:06,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:06,805 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 [2023-12-16 08:09:06,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:06,806 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) [2023-12-16 08:09:06,836 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 [2023-12-16 08:09:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:06,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:06,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:06,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:06,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:06,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634951460] [2023-12-16 08:09:06,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634951460] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:06,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:06,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:06,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084378021] [2023-12-16 08:09:06,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:06,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:06,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:06,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:06,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:06,964 INFO L87 Difference]: Start difference. First operand 2053 states and 2650 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:07,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:07,124 INFO L93 Difference]: Finished difference Result 4156 states and 5410 transitions. [2023-12-16 08:09:07,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:09:07,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:09:07,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:07,129 INFO L225 Difference]: With dead ends: 4156 [2023-12-16 08:09:07,129 INFO L226 Difference]: Without dead ends: 2121 [2023-12-16 08:09:07,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:07,134 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 47 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:07,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1203 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:09:07,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2023-12-16 08:09:07,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 2057. [2023-12-16 08:09:07,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 1938 states have (on average 1.2925696594427245) internal successors, (2505), 1941 states have internal predecessors, (2505), 65 states have call successors, (65), 53 states have call predecessors, (65), 53 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2023-12-16 08:09:07,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2634 transitions. [2023-12-16 08:09:07,226 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2634 transitions. Word has length 142 [2023-12-16 08:09:07,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:07,226 INFO L495 AbstractCegarLoop]: Abstraction has 2057 states and 2634 transitions. [2023-12-16 08:09:07,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:07,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2634 transitions. [2023-12-16 08:09:07,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:09:07,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:07,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:07,253 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 [2023-12-16 08:09:07,432 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 [2023-12-16 08:09:07,432 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:07,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:07,433 INFO L85 PathProgramCache]: Analyzing trace with hash 59295031, now seen corresponding path program 1 times [2023-12-16 08:09:07,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:07,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843446199] [2023-12-16 08:09:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:07,433 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 [2023-12-16 08:09:07,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:07,434 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) [2023-12-16 08:09:07,436 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 [2023-12-16 08:09:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:07,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:09:07,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:07,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:07,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:07,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843446199] [2023-12-16 08:09:07,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843446199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:07,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:07,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 08:09:07,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106452650] [2023-12-16 08:09:07,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:07,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:09:07,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:07,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:09:07,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:07,639 INFO L87 Difference]: Start difference. First operand 2057 states and 2634 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:07,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:07,873 INFO L93 Difference]: Finished difference Result 5964 states and 7656 transitions. [2023-12-16 08:09:07,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:09:07,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:09:07,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:07,880 INFO L225 Difference]: With dead ends: 5964 [2023-12-16 08:09:07,881 INFO L226 Difference]: Without dead ends: 3925 [2023-12-16 08:09:07,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:07,884 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 351 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:07,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 826 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:09:07,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2023-12-16 08:09:08,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3919. [2023-12-16 08:09:08,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3919 states, 3696 states have (on average 1.2827380952380953) internal successors, (4741), 3700 states have internal predecessors, (4741), 120 states have call successors, (120), 101 states have call predecessors, (120), 102 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2023-12-16 08:09:08,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3919 states to 3919 states and 4981 transitions. [2023-12-16 08:09:08,054 INFO L78 Accepts]: Start accepts. Automaton has 3919 states and 4981 transitions. Word has length 142 [2023-12-16 08:09:08,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:08,054 INFO L495 AbstractCegarLoop]: Abstraction has 3919 states and 4981 transitions. [2023-12-16 08:09:08,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:08,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3919 states and 4981 transitions. [2023-12-16 08:09:08,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:09:08,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:08,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:08,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:08,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:08,260 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:08,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:08,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1879020950, now seen corresponding path program 1 times [2023-12-16 08:09:08,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:08,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288938323] [2023-12-16 08:09:08,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:08,262 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 [2023-12-16 08:09:08,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:08,284 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:08,319 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 (43)] Waiting until timeout for monitored process [2023-12-16 08:09:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:08,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:08,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:08,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:08,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:08,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288938323] [2023-12-16 08:09:08,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288938323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:08,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:08,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:08,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986042345] [2023-12-16 08:09:08,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:08,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:08,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:08,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:08,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:08,420 INFO L87 Difference]: Start difference. First operand 3919 states and 4981 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:08,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:08,667 INFO L93 Difference]: Finished difference Result 8304 states and 10670 transitions. [2023-12-16 08:09:08,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:09:08,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:09:08,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:08,673 INFO L225 Difference]: With dead ends: 8304 [2023-12-16 08:09:08,673 INFO L226 Difference]: Without dead ends: 4403 [2023-12-16 08:09:08,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:08,679 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 29 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:08,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1215 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:09:08,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4403 states. [2023-12-16 08:09:08,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4403 to 3963. [2023-12-16 08:09:08,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3963 states, 3740 states have (on average 1.2740641711229947) internal successors, (4765), 3744 states have internal predecessors, (4765), 120 states have call successors, (120), 101 states have call predecessors, (120), 102 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2023-12-16 08:09:08,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3963 states to 3963 states and 5005 transitions. [2023-12-16 08:09:08,877 INFO L78 Accepts]: Start accepts. Automaton has 3963 states and 5005 transitions. Word has length 142 [2023-12-16 08:09:08,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:08,878 INFO L495 AbstractCegarLoop]: Abstraction has 3963 states and 5005 transitions. [2023-12-16 08:09:08,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:08,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3963 states and 5005 transitions. [2023-12-16 08:09:08,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:09:08,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:08,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:08,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2023-12-16 08:09:09,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:09,083 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:09,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:09,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1855246568, now seen corresponding path program 1 times [2023-12-16 08:09:09,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:09,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933838922] [2023-12-16 08:09:09,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:09,085 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:09,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:09,086 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:09,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-12-16 08:09:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:09,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:09,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:09,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:09,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:09,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:09,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933838922] [2023-12-16 08:09:09,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933838922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:09,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:09,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:09,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691176651] [2023-12-16 08:09:09,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:09,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:09,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:09,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:09,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:09,219 INFO L87 Difference]: Start difference. First operand 3963 states and 5005 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:09,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:09,467 INFO L93 Difference]: Finished difference Result 7940 states and 10113 transitions. [2023-12-16 08:09:09,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:09:09,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:09:09,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:09,474 INFO L225 Difference]: With dead ends: 7940 [2023-12-16 08:09:09,474 INFO L226 Difference]: Without dead ends: 3995 [2023-12-16 08:09:09,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:09,482 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 20 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:09,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1205 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:09:09,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2023-12-16 08:09:09,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3967. [2023-12-16 08:09:09,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3967 states, 3744 states have (on average 1.263087606837607) internal successors, (4729), 3748 states have internal predecessors, (4729), 120 states have call successors, (120), 101 states have call predecessors, (120), 102 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2023-12-16 08:09:09,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3967 states to 3967 states and 4969 transitions. [2023-12-16 08:09:09,653 INFO L78 Accepts]: Start accepts. Automaton has 3967 states and 4969 transitions. Word has length 142 [2023-12-16 08:09:09,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:09,655 INFO L495 AbstractCegarLoop]: Abstraction has 3967 states and 4969 transitions. [2023-12-16 08:09:09,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:09,655 INFO L276 IsEmpty]: Start isEmpty. Operand 3967 states and 4969 transitions. [2023-12-16 08:09:09,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:09:09,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:09,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:09,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:09,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:09,863 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:09,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:09,863 INFO L85 PathProgramCache]: Analyzing trace with hash -979227562, now seen corresponding path program 1 times [2023-12-16 08:09:09,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:09,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551423196] [2023-12-16 08:09:09,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:09,864 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 [2023-12-16 08:09:09,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:09,865 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:09,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-12-16 08:09:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:10,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:10,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:10,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:10,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:10,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551423196] [2023-12-16 08:09:10,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551423196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:10,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:10,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:10,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608667077] [2023-12-16 08:09:10,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:10,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:10,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:10,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:10,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:10,016 INFO L87 Difference]: Start difference. First operand 3967 states and 4969 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:10,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:10,308 INFO L93 Difference]: Finished difference Result 7956 states and 10051 transitions. [2023-12-16 08:09:10,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:09:10,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:09:10,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:10,315 INFO L225 Difference]: With dead ends: 7956 [2023-12-16 08:09:10,315 INFO L226 Difference]: Without dead ends: 4007 [2023-12-16 08:09:10,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:10,320 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 11 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:10,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1206 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:09:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4007 states. [2023-12-16 08:09:10,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4007 to 3975. [2023-12-16 08:09:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3975 states, 3752 states have (on average 1.2523987206823028) internal successors, (4699), 3756 states have internal predecessors, (4699), 120 states have call successors, (120), 101 states have call predecessors, (120), 102 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2023-12-16 08:09:10,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3975 states to 3975 states and 4939 transitions. [2023-12-16 08:09:10,483 INFO L78 Accepts]: Start accepts. Automaton has 3975 states and 4939 transitions. Word has length 142 [2023-12-16 08:09:10,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:10,483 INFO L495 AbstractCegarLoop]: Abstraction has 3975 states and 4939 transitions. [2023-12-16 08:09:10,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:10,484 INFO L276 IsEmpty]: Start isEmpty. Operand 3975 states and 4939 transitions. [2023-12-16 08:09:10,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:09:10,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:10,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:10,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:10,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:10,689 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:10,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:10,690 INFO L85 PathProgramCache]: Analyzing trace with hash -994746280, now seen corresponding path program 1 times [2023-12-16 08:09:10,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:10,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637255365] [2023-12-16 08:09:10,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:10,690 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 [2023-12-16 08:09:10,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:10,692 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 08:09:10,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-12-16 08:09:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:10,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 08:09:10,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:10,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:10,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:10,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637255365] [2023-12-16 08:09:10,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637255365] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:10,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:10,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:10,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128953509] [2023-12-16 08:09:10,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:10,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:10,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:10,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:10,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:10,827 INFO L87 Difference]: Start difference. First operand 3975 states and 4939 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:11,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:11,061 INFO L93 Difference]: Finished difference Result 7948 states and 9959 transitions. [2023-12-16 08:09:11,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:09:11,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:09:11,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:11,067 INFO L225 Difference]: With dead ends: 7948 [2023-12-16 08:09:11,067 INFO L226 Difference]: Without dead ends: 3991 [2023-12-16 08:09:11,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:11,072 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 2 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:11,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1207 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:09:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3991 states. [2023-12-16 08:09:11,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3991 to 3983. [2023-12-16 08:09:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3983 states, 3760 states have (on average 1.241755319148936) internal successors, (4669), 3764 states have internal predecessors, (4669), 120 states have call successors, (120), 101 states have call predecessors, (120), 102 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2023-12-16 08:09:11,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3983 states to 3983 states and 4909 transitions. [2023-12-16 08:09:11,282 INFO L78 Accepts]: Start accepts. Automaton has 3983 states and 4909 transitions. Word has length 142 [2023-12-16 08:09:11,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:11,282 INFO L495 AbstractCegarLoop]: Abstraction has 3983 states and 4909 transitions. [2023-12-16 08:09:11,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:11,282 INFO L276 IsEmpty]: Start isEmpty. Operand 3983 states and 4909 transitions. [2023-12-16 08:09:11,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:09:11,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:11,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:11,290 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 (46)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:11,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:11,488 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:11,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:11,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1250833174, now seen corresponding path program 1 times [2023-12-16 08:09:11,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:11,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930655586] [2023-12-16 08:09:11,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:11,490 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 [2023-12-16 08:09:11,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:11,496 INFO L229 MonitoredProcess]: Starting monitored process 47 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) [2023-12-16 08:09:11,499 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 (47)] Waiting until timeout for monitored process [2023-12-16 08:09:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:11,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 08:09:11,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:11,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:11,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:11,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930655586] [2023-12-16 08:09:11,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930655586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:11,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:11,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:11,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852028424] [2023-12-16 08:09:11,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:11,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:09:11,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:11,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:09:11,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:11,815 INFO L87 Difference]: Start difference. First operand 3983 states and 4909 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:12,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:12,343 INFO L93 Difference]: Finished difference Result 7949 states and 9802 transitions. [2023-12-16 08:09:12,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:09:12,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:09:12,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:12,350 INFO L225 Difference]: With dead ends: 7949 [2023-12-16 08:09:12,350 INFO L226 Difference]: Without dead ends: 3983 [2023-12-16 08:09:12,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:09:12,354 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 495 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:12,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 677 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:09:12,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2023-12-16 08:09:12,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3983. [2023-12-16 08:09:12,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3983 states, 3760 states have (on average 1.238031914893617) internal successors, (4655), 3764 states have internal predecessors, (4655), 120 states have call successors, (120), 101 states have call predecessors, (120), 102 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2023-12-16 08:09:12,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3983 states to 3983 states and 4895 transitions. [2023-12-16 08:09:12,574 INFO L78 Accepts]: Start accepts. Automaton has 3983 states and 4895 transitions. Word has length 142 [2023-12-16 08:09:12,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:12,574 INFO L495 AbstractCegarLoop]: Abstraction has 3983 states and 4895 transitions. [2023-12-16 08:09:12,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:12,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3983 states and 4895 transitions. [2023-12-16 08:09:12,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:09:12,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:12,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:12,588 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 (47)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:12,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:12,780 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:12,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:12,781 INFO L85 PathProgramCache]: Analyzing trace with hash 221473876, now seen corresponding path program 1 times [2023-12-16 08:09:12,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:12,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643078831] [2023-12-16 08:09:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:12,781 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 [2023-12-16 08:09:12,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:12,782 INFO L229 MonitoredProcess]: Starting monitored process 48 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) [2023-12-16 08:09:12,784 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 (48)] Waiting until timeout for monitored process [2023-12-16 08:09:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:12,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 08:09:12,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:13,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:13,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:13,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:13,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643078831] [2023-12-16 08:09:13,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643078831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:13,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:13,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:13,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697474142] [2023-12-16 08:09:13,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:13,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:09:13,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:13,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:09:13,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:13,028 INFO L87 Difference]: Start difference. First operand 3983 states and 4895 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:13,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:13,460 INFO L93 Difference]: Finished difference Result 7949 states and 9774 transitions. [2023-12-16 08:09:13,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 08:09:13,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:09:13,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:13,467 INFO L225 Difference]: With dead ends: 7949 [2023-12-16 08:09:13,467 INFO L226 Difference]: Without dead ends: 3983 [2023-12-16 08:09:13,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 08:09:13,471 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 482 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:13,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 670 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:09:13,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2023-12-16 08:09:13,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3983. [2023-12-16 08:09:13,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3983 states, 3760 states have (on average 1.2343085106382978) internal successors, (4641), 3764 states have internal predecessors, (4641), 120 states have call successors, (120), 101 states have call predecessors, (120), 102 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2023-12-16 08:09:13,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3983 states to 3983 states and 4881 transitions. [2023-12-16 08:09:13,673 INFO L78 Accepts]: Start accepts. Automaton has 3983 states and 4881 transitions. Word has length 142 [2023-12-16 08:09:13,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:13,673 INFO L495 AbstractCegarLoop]: Abstraction has 3983 states and 4881 transitions. [2023-12-16 08:09:13,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:13,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3983 states and 4881 transitions. [2023-12-16 08:09:13,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:09:13,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:13,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:13,684 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 (48)] Ended with exit code 0 [2023-12-16 08:09:13,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:13,879 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:13,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:13,880 INFO L85 PathProgramCache]: Analyzing trace with hash 244106130, now seen corresponding path program 1 times [2023-12-16 08:09:13,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:13,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275615321] [2023-12-16 08:09:13,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:13,880 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 [2023-12-16 08:09:13,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:13,882 INFO L229 MonitoredProcess]: Starting monitored process 49 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) [2023-12-16 08:09:13,884 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 (49)] Waiting until timeout for monitored process [2023-12-16 08:09:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:14,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 08:09:14,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:14,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:14,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:14,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:14,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275615321] [2023-12-16 08:09:14,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275615321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:14,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:14,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:14,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930409633] [2023-12-16 08:09:14,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:14,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 08:09:14,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:14,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 08:09:14,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:14,105 INFO L87 Difference]: Start difference. First operand 3983 states and 4881 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:14,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:14,598 INFO L93 Difference]: Finished difference Result 8223 states and 10093 transitions. [2023-12-16 08:09:14,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 08:09:14,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-16 08:09:14,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:14,606 INFO L225 Difference]: With dead ends: 8223 [2023-12-16 08:09:14,606 INFO L226 Difference]: Without dead ends: 4257 [2023-12-16 08:09:14,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 08:09:14,611 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 571 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:14,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 665 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:09:14,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4257 states. [2023-12-16 08:09:14,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4257 to 4213. [2023-12-16 08:09:14,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4213 states, 3986 states have (on average 1.219016557952835) internal successors, (4859), 3990 states have internal predecessors, (4859), 120 states have call successors, (120), 105 states have call predecessors, (120), 106 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2023-12-16 08:09:14,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4213 states to 4213 states and 5099 transitions. [2023-12-16 08:09:14,820 INFO L78 Accepts]: Start accepts. Automaton has 4213 states and 5099 transitions. Word has length 142 [2023-12-16 08:09:14,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:14,820 INFO L495 AbstractCegarLoop]: Abstraction has 4213 states and 5099 transitions. [2023-12-16 08:09:14,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 08:09:14,820 INFO L276 IsEmpty]: Start isEmpty. Operand 4213 states and 5099 transitions. [2023-12-16 08:09:14,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 08:09:14,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:14,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:14,827 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 (49)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:15,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:15,026 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:15,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:15,027 INFO L85 PathProgramCache]: Analyzing trace with hash 462960848, now seen corresponding path program 1 times [2023-12-16 08:09:15,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:15,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308299880] [2023-12-16 08:09:15,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:15,027 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 [2023-12-16 08:09:15,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:15,030 INFO L229 MonitoredProcess]: Starting monitored process 50 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) [2023-12-16 08:09:15,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2023-12-16 08:09:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:15,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:09:15,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 08:09:15,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:15,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:15,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308299880] [2023-12-16 08:09:15,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308299880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:15,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:15,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 08:09:15,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981744527] [2023-12-16 08:09:15,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:15,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:09:15,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:15,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:09:15,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:15,269 INFO L87 Difference]: Start difference. First operand 4213 states and 5099 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-16 08:09:15,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:15,756 INFO L93 Difference]: Finished difference Result 12512 states and 15201 transitions. [2023-12-16 08:09:15,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:09:15,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 142 [2023-12-16 08:09:15,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:15,787 INFO L225 Difference]: With dead ends: 12512 [2023-12-16 08:09:15,787 INFO L226 Difference]: Without dead ends: 8317 [2023-12-16 08:09:15,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:15,810 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 273 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:15,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 753 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 08:09:15,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8317 states. [2023-12-16 08:09:16,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8317 to 8313. [2023-12-16 08:09:16,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8313 states, 7866 states have (on average 1.2098906687007374) internal successors, (9517), 7876 states have internal predecessors, (9517), 234 states have call successors, (234), 209 states have call predecessors, (234), 212 states have return successors, (236), 228 states have call predecessors, (236), 232 states have call successors, (236) [2023-12-16 08:09:16,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8313 states to 8313 states and 9987 transitions. [2023-12-16 08:09:16,267 INFO L78 Accepts]: Start accepts. Automaton has 8313 states and 9987 transitions. Word has length 142 [2023-12-16 08:09:16,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:16,268 INFO L495 AbstractCegarLoop]: Abstraction has 8313 states and 9987 transitions. [2023-12-16 08:09:16,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-16 08:09:16,268 INFO L276 IsEmpty]: Start isEmpty. Operand 8313 states and 9987 transitions. [2023-12-16 08:09:16,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-16 08:09:16,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:16,277 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, 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] [2023-12-16 08:09:16,296 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 (50)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:16,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:16,482 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:16,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:16,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1040238751, now seen corresponding path program 1 times [2023-12-16 08:09:16,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:16,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177193045] [2023-12-16 08:09:16,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:16,483 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 [2023-12-16 08:09:16,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:16,484 INFO L229 MonitoredProcess]: Starting monitored process 51 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) [2023-12-16 08:09:16,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2023-12-16 08:09:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:16,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 08:09:16,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-16 08:09:16,926 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:16,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:16,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177193045] [2023-12-16 08:09:16,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177193045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:16,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:16,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:16,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467087909] [2023-12-16 08:09:16,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:16,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:16,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:16,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:16,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:16,927 INFO L87 Difference]: Start difference. First operand 8313 states and 9987 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 08:09:17,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:17,999 INFO L93 Difference]: Finished difference Result 24657 states and 29577 transitions. [2023-12-16 08:09:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:09:18,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 228 [2023-12-16 08:09:18,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:18,026 INFO L225 Difference]: With dead ends: 24657 [2023-12-16 08:09:18,027 INFO L226 Difference]: Without dead ends: 16363 [2023-12-16 08:09:18,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:18,037 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 581 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:18,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 884 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:09:18,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16363 states. [2023-12-16 08:09:18,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16363 to 16359. [2023-12-16 08:09:18,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16359 states, 15488 states have (on average 1.2035769628099173) internal successors, (18641), 15514 states have internal predecessors, (18641), 446 states have call successors, (446), 401 states have call predecessors, (446), 424 states have return successors, (492), 444 states have call predecessors, (492), 444 states have call successors, (492) [2023-12-16 08:09:18,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16359 states to 16359 states and 19579 transitions. [2023-12-16 08:09:18,853 INFO L78 Accepts]: Start accepts. Automaton has 16359 states and 19579 transitions. Word has length 228 [2023-12-16 08:09:18,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:18,854 INFO L495 AbstractCegarLoop]: Abstraction has 16359 states and 19579 transitions. [2023-12-16 08:09:18,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 08:09:18,854 INFO L276 IsEmpty]: Start isEmpty. Operand 16359 states and 19579 transitions. [2023-12-16 08:09:18,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-16 08:09:18,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:18,861 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, 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] [2023-12-16 08:09:18,866 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 (51)] Ended with exit code 0 [2023-12-16 08:09:19,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:19,066 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:19,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:19,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1247589412, now seen corresponding path program 1 times [2023-12-16 08:09:19,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:19,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139557435] [2023-12-16 08:09:19,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:19,067 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 [2023-12-16 08:09:19,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:19,069 INFO L229 MonitoredProcess]: Starting monitored process 52 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) [2023-12-16 08:09:19,077 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 (52)] Waiting until timeout for monitored process [2023-12-16 08:09:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:19,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 08:09:19,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:19,447 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-16 08:09:19,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:19,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:19,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139557435] [2023-12-16 08:09:19,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139557435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:19,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:19,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:19,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461566492] [2023-12-16 08:09:19,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:19,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:19,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:19,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:19,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:19,449 INFO L87 Difference]: Start difference. First operand 16359 states and 19579 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 08:09:21,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:21,204 INFO L93 Difference]: Finished difference Result 48135 states and 57575 transitions. [2023-12-16 08:09:21,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:09:21,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 230 [2023-12-16 08:09:21,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:21,256 INFO L225 Difference]: With dead ends: 48135 [2023-12-16 08:09:21,257 INFO L226 Difference]: Without dead ends: 31795 [2023-12-16 08:09:21,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:21,273 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 556 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:21,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1121 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:09:21,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31795 states. [2023-12-16 08:09:22,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31795 to 31791. [2023-12-16 08:09:22,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31791 states, 30101 states have (on average 1.200259127603734) internal successors, (36129), 30160 states have internal predecessors, (36129), 857 states have call successors, (857), 769 states have call predecessors, (857), 832 states have return successors, (991), 863 states have call predecessors, (991), 855 states have call successors, (991) [2023-12-16 08:09:22,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31791 states to 31791 states and 37977 transitions. [2023-12-16 08:09:22,776 INFO L78 Accepts]: Start accepts. Automaton has 31791 states and 37977 transitions. Word has length 230 [2023-12-16 08:09:22,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:22,777 INFO L495 AbstractCegarLoop]: Abstraction has 31791 states and 37977 transitions. [2023-12-16 08:09:22,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 08:09:22,777 INFO L276 IsEmpty]: Start isEmpty. Operand 31791 states and 37977 transitions. [2023-12-16 08:09:22,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-16 08:09:22,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:22,790 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, 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] [2023-12-16 08:09:22,796 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 (52)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:22,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:22,996 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:22,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:22,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1341248282, now seen corresponding path program 1 times [2023-12-16 08:09:22,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:22,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686002730] [2023-12-16 08:09:22,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:22,997 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 [2023-12-16 08:09:22,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:22,998 INFO L229 MonitoredProcess]: Starting monitored process 53 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) [2023-12-16 08:09:22,999 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 (53)] Waiting until timeout for monitored process [2023-12-16 08:09:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:23,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:09:23,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-16 08:09:23,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:23,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:23,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686002730] [2023-12-16 08:09:23,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686002730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:23,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:23,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:09:23,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734813670] [2023-12-16 08:09:23,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:23,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:09:23,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:23,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:09:23,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:23,149 INFO L87 Difference]: Start difference. First operand 31791 states and 37977 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 08:09:24,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:24,745 INFO L93 Difference]: Finished difference Result 63551 states and 75900 transitions. [2023-12-16 08:09:24,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:09:24,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 230 [2023-12-16 08:09:24,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:24,799 INFO L225 Difference]: With dead ends: 63551 [2023-12-16 08:09:24,799 INFO L226 Difference]: Without dead ends: 31779 [2023-12-16 08:09:24,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:24,828 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 425 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:24,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 394 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 08:09:24,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31779 states. [2023-12-16 08:09:26,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31779 to 31779. [2023-12-16 08:09:26,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31779 states, 30092 states have (on average 1.2000531702778148) internal successors, (36112), 30150 states have internal predecessors, (36112), 854 states have call successors, (854), 769 states have call predecessors, (854), 832 states have return successors, (988), 860 states have call predecessors, (988), 852 states have call successors, (988) [2023-12-16 08:09:26,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31779 states to 31779 states and 37954 transitions. [2023-12-16 08:09:26,592 INFO L78 Accepts]: Start accepts. Automaton has 31779 states and 37954 transitions. Word has length 230 [2023-12-16 08:09:26,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:26,593 INFO L495 AbstractCegarLoop]: Abstraction has 31779 states and 37954 transitions. [2023-12-16 08:09:26,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 08:09:26,593 INFO L276 IsEmpty]: Start isEmpty. Operand 31779 states and 37954 transitions. [2023-12-16 08:09:26,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-16 08:09:26,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:26,607 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:26,624 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 (53)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:26,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:26,812 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:26,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:26,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1316064097, now seen corresponding path program 1 times [2023-12-16 08:09:26,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:26,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845705905] [2023-12-16 08:09:26,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:26,813 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 [2023-12-16 08:09:26,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:26,814 INFO L229 MonitoredProcess]: Starting monitored process 54 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) [2023-12-16 08:09:26,815 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 (54)] Waiting until timeout for monitored process [2023-12-16 08:09:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:27,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 08:09:27,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-16 08:09:27,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:27,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:27,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845705905] [2023-12-16 08:09:27,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845705905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:27,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:27,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:27,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772581472] [2023-12-16 08:09:27,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:27,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:27,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:27,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:27,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:27,211 INFO L87 Difference]: Start difference. First operand 31779 states and 37954 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 08:09:30,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:30,333 INFO L93 Difference]: Finished difference Result 93454 states and 111564 transitions. [2023-12-16 08:09:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:09:30,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 232 [2023-12-16 08:09:30,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:30,462 INFO L225 Difference]: With dead ends: 93454 [2023-12-16 08:09:30,462 INFO L226 Difference]: Without dead ends: 61694 [2023-12-16 08:09:30,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:30,483 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 548 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:30,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 1088 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 08:09:30,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61694 states. [2023-12-16 08:09:33,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61694 to 61690. [2023-12-16 08:09:34,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61690 states, 58416 states have (on average 1.1977198027937552) internal successors, (69966), 58547 states have internal predecessors, (69966), 1641 states have call successors, (1641), 1473 states have call predecessors, (1641), 1632 states have return successors, (1967), 1671 states have call predecessors, (1967), 1639 states have call successors, (1967) [2023-12-16 08:09:34,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61690 states to 61690 states and 73574 transitions. [2023-12-16 08:09:34,114 INFO L78 Accepts]: Start accepts. Automaton has 61690 states and 73574 transitions. Word has length 232 [2023-12-16 08:09:34,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:34,114 INFO L495 AbstractCegarLoop]: Abstraction has 61690 states and 73574 transitions. [2023-12-16 08:09:34,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 08:09:34,114 INFO L276 IsEmpty]: Start isEmpty. Operand 61690 states and 73574 transitions. [2023-12-16 08:09:34,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-16 08:09:34,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:34,138 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:34,144 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 (54)] Ended with exit code 0 [2023-12-16 08:09:34,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:34,344 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:34,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:34,344 INFO L85 PathProgramCache]: Analyzing trace with hash -34346013, now seen corresponding path program 1 times [2023-12-16 08:09:34,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:34,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482068362] [2023-12-16 08:09:34,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:34,345 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 [2023-12-16 08:09:34,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:34,346 INFO L229 MonitoredProcess]: Starting monitored process 55 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) [2023-12-16 08:09:34,348 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 (55)] Waiting until timeout for monitored process [2023-12-16 08:09:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:34,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 08:09:34,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-16 08:09:34,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:34,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:34,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482068362] [2023-12-16 08:09:34,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482068362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:34,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:34,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 08:09:34,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468887971] [2023-12-16 08:09:34,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:34,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 08:09:34,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:34,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 08:09:34,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:34,539 INFO L87 Difference]: Start difference. First operand 61690 states and 73574 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 08:09:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 08:09:37,645 INFO L93 Difference]: Finished difference Result 123350 states and 147097 transitions. [2023-12-16 08:09:37,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 08:09:37,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 232 [2023-12-16 08:09:37,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 08:09:37,765 INFO L225 Difference]: With dead ends: 123350 [2023-12-16 08:09:37,765 INFO L226 Difference]: Without dead ends: 61679 [2023-12-16 08:09:37,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 08:09:37,813 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 423 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:37,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 393 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 08:09:37,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61679 states. [2023-12-16 08:09:41,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61679 to 61679. [2023-12-16 08:09:41,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61679 states, 58408 states have (on average 1.197627037392138) internal successors, (69951), 58538 states have internal predecessors, (69951), 1638 states have call successors, (1638), 1473 states have call predecessors, (1638), 1632 states have return successors, (1964), 1668 states have call predecessors, (1964), 1636 states have call successors, (1964) [2023-12-16 08:09:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61679 states to 61679 states and 73553 transitions. [2023-12-16 08:09:41,367 INFO L78 Accepts]: Start accepts. Automaton has 61679 states and 73553 transitions. Word has length 232 [2023-12-16 08:09:41,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 08:09:41,367 INFO L495 AbstractCegarLoop]: Abstraction has 61679 states and 73553 transitions. [2023-12-16 08:09:41,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 08:09:41,367 INFO L276 IsEmpty]: Start isEmpty. Operand 61679 states and 73553 transitions. [2023-12-16 08:09:41,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-16 08:09:41,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 08:09:41,388 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 08:09:41,393 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 (55)] Forceful destruction successful, exit code 0 [2023-12-16 08:09:41,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:41,594 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 08:09:41,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 08:09:41,594 INFO L85 PathProgramCache]: Analyzing trace with hash 505986716, now seen corresponding path program 1 times [2023-12-16 08:09:41,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 08:09:41,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128240235] [2023-12-16 08:09:41,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 08:09:41,595 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 [2023-12-16 08:09:41,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 08:09:41,596 INFO L229 MonitoredProcess]: Starting monitored process 56 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) [2023-12-16 08:09:41,627 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 (56)] Waiting until timeout for monitored process [2023-12-16 08:09:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 08:09:41,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 08:09:41,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 08:09:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-16 08:09:41,951 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 08:09:41,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 08:09:41,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128240235] [2023-12-16 08:09:41,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128240235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 08:09:41,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 08:09:41,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 08:09:41,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658596558] [2023-12-16 08:09:41,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 08:09:41,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 08:09:41,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 08:09:41,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 08:09:41,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 08:09:41,953 INFO L87 Difference]: Start difference. First operand 61679 states and 73553 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Received shutdown request... [2023-12-16 08:09:44,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 08:09:44,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 08:09:44,254 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 489 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 08:09:44,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 842 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 08:09:44,255 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 08:09:44,260 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 (56)] Ended with exit code 0 [2023-12-16 08:09:44,290 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 08:09:44,290 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 08:09:44,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 08:09:44,462 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (61679states) and FLOYD_HOARE automaton (currently 5 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (44483 states constructed, input type IntersectNwa). [2023-12-16 08:09:44,463 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 08:09:44,466 INFO L445 BasicCegarLoop]: Path program histogram: [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] [2023-12-16 08:09:44,467 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 08:09:44,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 08:09:44 BoogieIcfgContainer [2023-12-16 08:09:44,469 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 08:09:44,469 INFO L158 Benchmark]: Toolchain (without parser) took 68349.82ms. Allocated memory was 295.7MB in the beginning and 6.3GB in the end (delta: 6.0GB). Free memory was 258.8MB in the beginning and 5.6GB in the end (delta: -5.3GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-16 08:09:44,469 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 190.8MB. Free memory is still 138.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 08:09:44,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.11ms. Allocated memory is still 295.7MB. Free memory was 258.8MB in the beginning and 232.6MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-16 08:09:44,469 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.33ms. Allocated memory is still 295.7MB. Free memory was 232.6MB in the beginning and 227.9MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 08:09:44,469 INFO L158 Benchmark]: Boogie Preprocessor took 141.86ms. Allocated memory is still 295.7MB. Free memory was 227.9MB in the beginning and 222.1MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 08:09:44,469 INFO L158 Benchmark]: RCFGBuilder took 914.30ms. Allocated memory is still 295.7MB. Free memory was 222.1MB in the beginning and 232.8MB in the end (delta: -10.7MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. [2023-12-16 08:09:44,469 INFO L158 Benchmark]: TraceAbstraction took 66760.71ms. Allocated memory was 295.7MB in the beginning and 6.3GB in the end (delta: 6.0GB). Free memory was 232.3MB in the beginning and 5.6GB in the end (delta: -5.3GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-16 08:09:44,470 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 190.8MB. Free memory is still 138.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 444.11ms. Allocated memory is still 295.7MB. Free memory was 258.8MB in the beginning and 232.6MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 83.33ms. Allocated memory is still 295.7MB. Free memory was 232.6MB in the beginning and 227.9MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 141.86ms. Allocated memory is still 295.7MB. Free memory was 227.9MB in the beginning and 222.1MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 914.30ms. Allocated memory is still 295.7MB. Free memory was 222.1MB in the beginning and 232.8MB in the end (delta: -10.7MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. * TraceAbstraction took 66760.71ms. Allocated memory was 295.7MB in the beginning and 6.3GB in the end (delta: 6.0GB). Free memory was 232.3MB in the beginning and 5.6GB in the end (delta: -5.3GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 390]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 390). Cancelled while NwaCegarLoop was constructing difference of abstraction (61679states) and FLOYD_HOARE automaton (currently 5 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (44483 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 27). Cancelled while NwaCegarLoop was constructing difference of abstraction (61679states) and FLOYD_HOARE automaton (currently 5 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (44483 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 373 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 66.7s, OverallIterations: 55, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 28.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24984 SdHoareTripleChecker+Valid, 11.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24548 mSDsluCounter, 48991 SdHoareTripleChecker+Invalid, 9.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27439 mSDsCounter, 1213 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15629 IncrementalHoareTripleChecker+Invalid, 16842 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1213 mSolverCounterUnsat, 21552 mSDtfsCounter, 15629 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7364 GetRequests, 7214 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61690occurred in iteration=53, InterpolantAutomatonStates: 223, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 15.5s AutomataMinimizationTime, 54 MinimizatonAttempts, 1765 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.4s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 7266 NumberOfCodeBlocks, 7266 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 7330 ConstructedInterpolants, 0 QuantifiedInterpolants, 12622 SizeOfPredicates, 14 NumberOfNonLiveVariables, 20094 ConjunctsInSsa, 215 ConjunctsInUnsatCore, 57 InterpolantComputations, 54 PerfectInterpolantSequences, 641/667 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown