/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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 18:16:56,554 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 18:16:56,624 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 18:16:56,627 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 18:16:56,628 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 18:16:56,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 18:16:56,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 18:16:56,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 18:16:56,659 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 18:16:56,662 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 18:16:56,662 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 18:16:56,662 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 18:16:56,663 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 18:16:56,664 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 18:16:56,664 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 18:16:56,664 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 18:16:56,665 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 18:16:56,665 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 18:16:56,665 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 18:16:56,665 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 18:16:56,665 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 18:16:56,666 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 18:16:56,666 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 18:16:56,666 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 18:16:56,666 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 18:16:56,666 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 18:16:56,666 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 18:16:56,667 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 18:16:56,667 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 18:16:56,667 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 18:16:56,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 18:16:56,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 18:16:56,668 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 18:16:56,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 18:16:56,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:16:56,668 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 18:16:56,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 18:16:56,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 18:16:56,669 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 18:16:56,669 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 18:16:56,669 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 18:16:56,669 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 18:16:56,669 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 18:16:56,669 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 18:16:56,670 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 18:16:56,670 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 18:16:56,670 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 18:16:56,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 18:16:56,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 18:16:56,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 18:16:56,901 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 18:16:56,901 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 18:16:56,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-16 18:16:57,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 18:16:58,190 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 18:16:58,191 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-16 18:16:58,199 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a837f4caf/224581a61839414da5b4e9506095aaf6/FLAG89834f0c5 [2023-12-16 18:16:58,210 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a837f4caf/224581a61839414da5b4e9506095aaf6 [2023-12-16 18:16:58,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 18:16:58,213 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 18:16:58,218 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 18:16:58,218 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 18:16:58,222 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 18:16:58,222 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:16:58" (1/1) ... [2023-12-16 18:16:58,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eb6c353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:16:58, skipping insertion in model container [2023-12-16 18:16:58,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:16:58" (1/1) ... [2023-12-16 18:16:58,249 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 18:16:58,371 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4373,4386] [2023-12-16 18:16:58,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:16:58,398 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 18:16:58,419 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4373,4386] [2023-12-16 18:16:58,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 18:16:58,443 INFO L206 MainTranslator]: Completed translation [2023-12-16 18:16:58,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:16:58 WrapperNode [2023-12-16 18:16:58,443 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 18:16:58,444 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 18:16:58,444 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 18:16:58,445 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 18:16:58,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:16:58" (1/1) ... [2023-12-16 18:16:58,457 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:16:58" (1/1) ... [2023-12-16 18:16:58,490 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 351 [2023-12-16 18:16:58,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 18:16:58,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 18:16:58,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 18:16:58,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 18:16:58,499 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:16:58" (1/1) ... [2023-12-16 18:16:58,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:16:58" (1/1) ... [2023-12-16 18:16:58,502 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:16:58" (1/1) ... [2023-12-16 18:16:58,519 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 18:16:58,520 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:16:58" (1/1) ... [2023-12-16 18:16:58,520 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:16:58" (1/1) ... [2023-12-16 18:16:58,525 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:16:58" (1/1) ... [2023-12-16 18:16:58,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:16:58" (1/1) ... [2023-12-16 18:16:58,541 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:16:58" (1/1) ... [2023-12-16 18:16:58,543 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:16:58" (1/1) ... [2023-12-16 18:16:58,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 18:16:58,545 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 18:16:58,545 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 18:16:58,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 18:16:58,546 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:16:58" (1/1) ... [2023-12-16 18:16:58,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 18:16:58,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 18:16:58,589 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 18:16:58,607 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 18:16:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 18:16:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 18:16:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 18:16:58,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 18:16:58,725 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 18:16:58,727 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 18:16:59,058 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 18:16:59,093 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 18:16:59,093 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 18:16:59,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:16:59 BoogieIcfgContainer [2023-12-16 18:16:59,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 18:16:59,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 18:16:59,095 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 18:16:59,098 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 18:16:59,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:16:58" (1/3) ... [2023-12-16 18:16:59,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b98d262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:16:59, skipping insertion in model container [2023-12-16 18:16:59,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:16:58" (2/3) ... [2023-12-16 18:16:59,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b98d262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:16:59, skipping insertion in model container [2023-12-16 18:16:59,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:16:59" (3/3) ... [2023-12-16 18:16:59,100 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-16 18:16:59,111 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 18:16:59,111 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 18:16:59,170 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 18:16:59,175 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;@537c7db6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 18:16:59,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 18:16:59,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 81 states have (on average 1.7037037037037037) internal successors, (138), 82 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:16:59,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-16 18:16:59,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:16:59,195 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] [2023-12-16 18:16:59,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:16:59,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:16:59,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1085213270, now seen corresponding path program 1 times [2023-12-16 18:16:59,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:16:59,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770251889] [2023-12-16 18:16:59,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:16:59,212 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 18:16:59,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:16:59,214 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 18:16:59,222 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 18:16:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:16:59,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:16:59,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:16:59,396 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 18:16:59,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:16:59,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:16:59,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770251889] [2023-12-16 18:16:59,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770251889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:16:59,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:16:59,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:16:59,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083134434] [2023-12-16 18:16:59,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:16:59,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:16:59,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:16:59,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:16:59,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:16:59,433 INFO L87 Difference]: Start difference. First operand has 83 states, 81 states have (on average 1.7037037037037037) internal successors, (138), 82 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:16:59,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:16:59,476 INFO L93 Difference]: Finished difference Result 195 states and 314 transitions. [2023-12-16 18:16:59,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:16:59,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-16 18:16:59,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:16:59,485 INFO L225 Difference]: With dead ends: 195 [2023-12-16 18:16:59,485 INFO L226 Difference]: Without dead ends: 127 [2023-12-16 18:16:59,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 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 18:16:59,489 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 100 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:16:59,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 292 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:16:59,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-12-16 18:16:59,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2023-12-16 18:16:59,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.5080645161290323) internal successors, (187), 124 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:16:59,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 187 transitions. [2023-12-16 18:16:59,523 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 187 transitions. Word has length 36 [2023-12-16 18:16:59,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:16:59,524 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 187 transitions. [2023-12-16 18:16:59,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:16:59,524 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 187 transitions. [2023-12-16 18:16:59,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 18:16:59,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:16:59,525 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 18:16:59,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 18:16:59,733 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 18:16:59,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:16:59,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:16:59,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1921613256, now seen corresponding path program 1 times [2023-12-16 18:16:59,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:16:59,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425336053] [2023-12-16 18:16:59,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:16:59,735 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 18:16:59,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:16:59,736 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 18:16:59,740 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 18:16:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:16:59,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:16:59,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:16:59,853 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 18:16:59,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:16:59,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:16:59,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425336053] [2023-12-16 18:16:59,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425336053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:16:59,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:16:59,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:16:59,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61537708] [2023-12-16 18:16:59,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:16:59,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:16:59,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:16:59,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:16:59,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:16:59,856 INFO L87 Difference]: Start difference. First operand 125 states and 187 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:16:59,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:16:59,888 INFO L93 Difference]: Finished difference Result 305 states and 471 transitions. [2023-12-16 18:16:59,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:16:59,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-16 18:16:59,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:16:59,894 INFO L225 Difference]: With dead ends: 305 [2023-12-16 18:16:59,894 INFO L226 Difference]: Without dead ends: 199 [2023-12-16 18:16:59,894 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 18:16:59,895 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 81 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:16:59,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 252 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:16:59,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-12-16 18:16:59,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2023-12-16 18:16:59,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.530612244897959) internal successors, (300), 196 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:16:59,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 300 transitions. [2023-12-16 18:16:59,907 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 300 transitions. Word has length 37 [2023-12-16 18:16:59,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:16:59,907 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 300 transitions. [2023-12-16 18:16:59,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:16:59,907 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 300 transitions. [2023-12-16 18:16:59,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-16 18:16:59,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:16:59,911 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 18:16:59,914 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 18:17:00,114 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 18:17:00,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:00,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:00,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1122057593, now seen corresponding path program 1 times [2023-12-16 18:17:00,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:00,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770296951] [2023-12-16 18:17:00,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:00,116 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 18:17:00,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:00,117 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 18:17:00,121 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 18:17:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:00,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:17:00,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:00,220 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 18:17:00,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:00,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:00,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770296951] [2023-12-16 18:17:00,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770296951] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:00,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:00,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:17:00,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185169131] [2023-12-16 18:17:00,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:00,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:17:00,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:00,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:17:00,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:00,225 INFO L87 Difference]: Start difference. First operand 197 states and 300 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:00,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:00,250 INFO L93 Difference]: Finished difference Result 489 states and 758 transitions. [2023-12-16 18:17:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:17:00,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-16 18:17:00,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:00,254 INFO L225 Difference]: With dead ends: 489 [2023-12-16 18:17:00,254 INFO L226 Difference]: Without dead ends: 311 [2023-12-16 18:17:00,255 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 18:17:00,256 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 76 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:00,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 237 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:00,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-16 18:17:00,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 309. [2023-12-16 18:17:00,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.5324675324675325) internal successors, (472), 308 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:00,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 472 transitions. [2023-12-16 18:17:00,273 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 472 transitions. Word has length 38 [2023-12-16 18:17:00,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:00,273 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 472 transitions. [2023-12-16 18:17:00,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:00,274 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 472 transitions. [2023-12-16 18:17:00,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-16 18:17:00,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:00,274 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 18:17:00,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 18:17:00,477 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 18:17:00,477 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:00,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:00,478 INFO L85 PathProgramCache]: Analyzing trace with hash -664411233, now seen corresponding path program 1 times [2023-12-16 18:17:00,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:00,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370291510] [2023-12-16 18:17:00,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:00,478 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 18:17:00,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:00,483 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 18:17:00,485 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 (5)] Waiting until timeout for monitored process [2023-12-16 18:17:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:00,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:17:00,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:00,650 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 18:17:00,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:00,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:00,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370291510] [2023-12-16 18:17:00,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [370291510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:00,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:00,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:17:00,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191423285] [2023-12-16 18:17:00,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:00,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:17:00,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:00,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:17:00,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:17:00,652 INFO L87 Difference]: Start difference. First operand 309 states and 472 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:00,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:00,694 INFO L93 Difference]: Finished difference Result 1047 states and 1615 transitions. [2023-12-16 18:17:00,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:17:00,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-16 18:17:00,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:00,697 INFO L225 Difference]: With dead ends: 1047 [2023-12-16 18:17:00,697 INFO L226 Difference]: Without dead ends: 757 [2023-12-16 18:17:00,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:17:00,699 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 323 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:00,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 328 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:00,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2023-12-16 18:17:00,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 753. [2023-12-16 18:17:00,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 752 states have (on average 1.5319148936170213) internal successors, (1152), 752 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:00,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1152 transitions. [2023-12-16 18:17:00,747 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1152 transitions. Word has length 39 [2023-12-16 18:17:00,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:00,747 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1152 transitions. [2023-12-16 18:17:00,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:00,747 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1152 transitions. [2023-12-16 18:17:00,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-16 18:17:00,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:00,748 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] [2023-12-16 18:17:00,762 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 18:17:00,950 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 18:17:00,951 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:00,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:00,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1419799384, now seen corresponding path program 1 times [2023-12-16 18:17:00,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:00,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342114915] [2023-12-16 18:17:00,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:00,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:17:00,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:00,967 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 18:17:00,968 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 18:17:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:01,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:17:01,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:01,251 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 18:17:01,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:01,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:01,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342114915] [2023-12-16 18:17:01,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342114915] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:01,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:01,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:17:01,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327467116] [2023-12-16 18:17:01,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:01,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:17:01,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:01,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:17:01,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:17:01,253 INFO L87 Difference]: Start difference. First operand 753 states and 1152 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:01,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:01,394 INFO L93 Difference]: Finished difference Result 2221 states and 3418 transitions. [2023-12-16 18:17:01,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:17:01,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-16 18:17:01,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:01,399 INFO L225 Difference]: With dead ends: 2221 [2023-12-16 18:17:01,400 INFO L226 Difference]: Without dead ends: 1487 [2023-12-16 18:17:01,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:17:01,401 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 290 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:01,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 137 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:17:01,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2023-12-16 18:17:01,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1485. [2023-12-16 18:17:01,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1484 states have (on average 1.528301886792453) internal successors, (2268), 1484 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:01,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2268 transitions. [2023-12-16 18:17:01,429 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2268 transitions. Word has length 41 [2023-12-16 18:17:01,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:01,429 INFO L495 AbstractCegarLoop]: Abstraction has 1485 states and 2268 transitions. [2023-12-16 18:17:01,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:01,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2268 transitions. [2023-12-16 18:17:01,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-16 18:17:01,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:01,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:17:01,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-16 18:17:01,633 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 18:17:01,633 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:01,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:01,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1090247795, now seen corresponding path program 1 times [2023-12-16 18:17:01,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:01,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197557098] [2023-12-16 18:17:01,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:01,635 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 18:17:01,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:01,641 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 18:17:01,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 18:17:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:01,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:17:01,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:01,883 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 18:17:01,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:01,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:01,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197557098] [2023-12-16 18:17:01,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197557098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:01,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:01,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:17:01,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408727836] [2023-12-16 18:17:01,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:01,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:17:01,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:01,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:17:01,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:17:01,886 INFO L87 Difference]: Start difference. First operand 1485 states and 2268 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:02,000 INFO L93 Difference]: Finished difference Result 5981 states and 9156 transitions. [2023-12-16 18:17:02,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:17:02,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-16 18:17:02,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:02,013 INFO L225 Difference]: With dead ends: 5981 [2023-12-16 18:17:02,013 INFO L226 Difference]: Without dead ends: 4515 [2023-12-16 18:17:02,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:17:02,020 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 261 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:02,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 642 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:17:02,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4515 states. [2023-12-16 18:17:02,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4515 to 2949. [2023-12-16 18:17:02,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2948 states have (on average 1.4993215739484396) internal successors, (4420), 2948 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 4420 transitions. [2023-12-16 18:17:02,079 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 4420 transitions. Word has length 41 [2023-12-16 18:17:02,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:02,081 INFO L495 AbstractCegarLoop]: Abstraction has 2949 states and 4420 transitions. [2023-12-16 18:17:02,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:02,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 4420 transitions. [2023-12-16 18:17:02,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-16 18:17:02,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:02,083 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] [2023-12-16 18:17:02,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-16 18:17:02,286 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 18:17:02,288 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:02,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:02,289 INFO L85 PathProgramCache]: Analyzing trace with hash 542600406, now seen corresponding path program 1 times [2023-12-16 18:17:02,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:02,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244763796] [2023-12-16 18:17:02,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:02,289 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 18:17:02,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:02,290 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 18:17:02,312 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 18:17:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:02,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 18:17:02,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:02,374 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 18:17:02,374 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:02,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:02,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244763796] [2023-12-16 18:17:02,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244763796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:02,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:02,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:17:02,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128699394] [2023-12-16 18:17:02,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:02,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 18:17:02,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:02,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 18:17:02,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 18:17:02,376 INFO L87 Difference]: Start difference. First operand 2949 states and 4420 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:02,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:02,418 INFO L93 Difference]: Finished difference Result 6071 states and 9013 transitions. [2023-12-16 18:17:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:17:02,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-16 18:17:02,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:02,433 INFO L225 Difference]: With dead ends: 6071 [2023-12-16 18:17:02,434 INFO L226 Difference]: Without dead ends: 6069 [2023-12-16 18:17:02,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 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 18:17:02,436 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 184 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:02,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 399 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:02,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6069 states. [2023-12-16 18:17:02,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6069 to 3141. [2023-12-16 18:17:02,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 3140 states have (on average 1.4687898089171973) internal successors, (4612), 3140 states have internal predecessors, (4612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 4612 transitions. [2023-12-16 18:17:02,496 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 4612 transitions. Word has length 42 [2023-12-16 18:17:02,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:02,496 INFO L495 AbstractCegarLoop]: Abstraction has 3141 states and 4612 transitions. [2023-12-16 18:17:02,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:02,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 4612 transitions. [2023-12-16 18:17:02,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-16 18:17:02,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:02,497 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] [2023-12-16 18:17:02,502 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 (8)] Forceful destruction successful, exit code 0 [2023-12-16 18:17:02,700 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 18:17:02,700 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:02,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:02,701 INFO L85 PathProgramCache]: Analyzing trace with hash -348683587, now seen corresponding path program 1 times [2023-12-16 18:17:02,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:02,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085426882] [2023-12-16 18:17:02,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:02,701 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 18:17:02,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:02,702 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 18:17:02,730 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 18:17:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:02,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:17:02,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:02,796 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 18:17:02,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:02,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:02,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085426882] [2023-12-16 18:17:02,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085426882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:02,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:02,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:17:02,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868888228] [2023-12-16 18:17:02,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:02,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:17:02,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:02,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:17:02,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:02,797 INFO L87 Difference]: Start difference. First operand 3141 states and 4612 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:02,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:02,829 INFO L93 Difference]: Finished difference Result 7603 states and 11170 transitions. [2023-12-16 18:17:02,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:17:02,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-16 18:17:02,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:02,840 INFO L225 Difference]: With dead ends: 7603 [2023-12-16 18:17:02,841 INFO L226 Difference]: Without dead ends: 4481 [2023-12-16 18:17:02,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 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 18:17:02,845 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 66 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:02,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 234 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:02,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4481 states. [2023-12-16 18:17:02,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4481 to 4479. [2023-12-16 18:17:02,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4479 states, 4478 states have (on average 1.4595801697186244) internal successors, (6536), 4478 states have internal predecessors, (6536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:02,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4479 states to 4479 states and 6536 transitions. [2023-12-16 18:17:02,905 INFO L78 Accepts]: Start accepts. Automaton has 4479 states and 6536 transitions. Word has length 43 [2023-12-16 18:17:02,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:02,906 INFO L495 AbstractCegarLoop]: Abstraction has 4479 states and 6536 transitions. [2023-12-16 18:17:02,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:02,906 INFO L276 IsEmpty]: Start isEmpty. Operand 4479 states and 6536 transitions. [2023-12-16 18:17:02,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 18:17:02,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:02,907 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:17:02,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-16 18:17:03,110 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 18:17:03,112 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:03,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:03,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1611610844, now seen corresponding path program 1 times [2023-12-16 18:17:03,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:03,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1319860198] [2023-12-16 18:17:03,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:03,130 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 18:17:03,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:03,132 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 18:17:03,176 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 18:17:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:03,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 18:17:03,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:03,671 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:03,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:17:03,865 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:03,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:03,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1319860198] [2023-12-16 18:17:03,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1319860198] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:17:03,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:17:03,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-16 18:17:03,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259666370] [2023-12-16 18:17:03,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:17:03,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:17:03,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:03,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:17:03,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:17:03,867 INFO L87 Difference]: Start difference. First operand 4479 states and 6536 transitions. Second operand has 16 states, 16 states have (on average 7.0) internal successors, (112), 15 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:09,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:09,086 INFO L93 Difference]: Finished difference Result 29254 states and 42028 transitions. [2023-12-16 18:17:09,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-16 18:17:09,087 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.0) internal successors, (112), 15 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-16 18:17:09,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:09,135 INFO L225 Difference]: With dead ends: 29254 [2023-12-16 18:17:09,135 INFO L226 Difference]: Without dead ends: 24796 [2023-12-16 18:17:09,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4688 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2821, Invalid=10061, Unknown=0, NotChecked=0, Total=12882 [2023-12-16 18:17:09,147 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 2545 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2545 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:09,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2545 Valid, 1762 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 18:17:09,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24796 states. [2023-12-16 18:17:09,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24796 to 4929. [2023-12-16 18:17:09,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4929 states, 4928 states have (on average 1.4496753246753247) internal successors, (7144), 4928 states have internal predecessors, (7144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:09,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4929 states to 4929 states and 7144 transitions. [2023-12-16 18:17:09,304 INFO L78 Accepts]: Start accepts. Automaton has 4929 states and 7144 transitions. Word has length 60 [2023-12-16 18:17:09,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:09,304 INFO L495 AbstractCegarLoop]: Abstraction has 4929 states and 7144 transitions. [2023-12-16 18:17:09,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0) internal successors, (112), 15 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:09,305 INFO L276 IsEmpty]: Start isEmpty. Operand 4929 states and 7144 transitions. [2023-12-16 18:17:09,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 18:17:09,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:09,307 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:17:09,324 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 (10)] Forceful destruction successful, exit code 0 [2023-12-16 18:17:09,510 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 18:17:09,510 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:09,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:09,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1763306829, now seen corresponding path program 1 times [2023-12-16 18:17:09,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:09,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144669746] [2023-12-16 18:17:09,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:09,514 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 18:17:09,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:09,520 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 18:17:09,527 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 18:17:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:09,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:17:09,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:09,724 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 18:17:09,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:09,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:09,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144669746] [2023-12-16 18:17:09,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144669746] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:09,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:09,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 18:17:09,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185593019] [2023-12-16 18:17:09,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:09,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:17:09,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:09,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:17:09,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:17:09,725 INFO L87 Difference]: Start difference. First operand 4929 states and 7144 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:09,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:09,899 INFO L93 Difference]: Finished difference Result 14745 states and 21390 transitions. [2023-12-16 18:17:09,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:17:09,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-16 18:17:09,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:09,915 INFO L225 Difference]: With dead ends: 14745 [2023-12-16 18:17:09,915 INFO L226 Difference]: Without dead ends: 9837 [2023-12-16 18:17:09,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:17:09,924 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 378 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:09,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 145 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:17:09,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9837 states. [2023-12-16 18:17:10,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9837 to 9835. [2023-12-16 18:17:10,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9835 states, 9834 states have (on average 1.4431563961765304) internal successors, (14192), 9834 states have internal predecessors, (14192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:10,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9835 states to 9835 states and 14192 transitions. [2023-12-16 18:17:10,044 INFO L78 Accepts]: Start accepts. Automaton has 9835 states and 14192 transitions. Word has length 60 [2023-12-16 18:17:10,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:10,045 INFO L495 AbstractCegarLoop]: Abstraction has 9835 states and 14192 transitions. [2023-12-16 18:17:10,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:10,045 INFO L276 IsEmpty]: Start isEmpty. Operand 9835 states and 14192 transitions. [2023-12-16 18:17:10,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 18:17:10,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:10,051 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:17:10,054 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 (11)] Forceful destruction successful, exit code 0 [2023-12-16 18:17:10,253 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 18:17:10,254 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:10,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:10,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1849676584, now seen corresponding path program 1 times [2023-12-16 18:17:10,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:10,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600003033] [2023-12-16 18:17:10,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:10,256 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 18:17:10,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:10,257 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 18:17:10,259 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 18:17:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:10,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 18:17:10,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:10,589 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:10,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:17:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:10,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:10,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600003033] [2023-12-16 18:17:10,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600003033] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:17:10,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:17:10,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-16 18:17:10,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010602870] [2023-12-16 18:17:10,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:17:10,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:17:10,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:10,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:17:10,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:17:10,798 INFO L87 Difference]: Start difference. First operand 9835 states and 14192 transitions. Second operand has 16 states, 16 states have (on average 6.5) internal successors, (104), 15 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:13,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:13,607 INFO L93 Difference]: Finished difference Result 33805 states and 48090 transitions. [2023-12-16 18:17:13,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-16 18:17:13,608 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 15 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-16 18:17:13,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:13,640 INFO L225 Difference]: With dead ends: 33805 [2023-12-16 18:17:13,640 INFO L226 Difference]: Without dead ends: 23991 [2023-12-16 18:17:13,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1209 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=977, Invalid=3183, Unknown=0, NotChecked=0, Total=4160 [2023-12-16 18:17:13,656 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 1535 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:13,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 1616 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 18:17:13,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23991 states. [2023-12-16 18:17:13,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23991 to 9761. [2023-12-16 18:17:13,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9761 states, 9760 states have (on average 1.4379098360655738) internal successors, (14034), 9760 states have internal predecessors, (14034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:13,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9761 states to 9761 states and 14034 transitions. [2023-12-16 18:17:13,858 INFO L78 Accepts]: Start accepts. Automaton has 9761 states and 14034 transitions. Word has length 60 [2023-12-16 18:17:13,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:13,858 INFO L495 AbstractCegarLoop]: Abstraction has 9761 states and 14034 transitions. [2023-12-16 18:17:13,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 15 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:13,859 INFO L276 IsEmpty]: Start isEmpty. Operand 9761 states and 14034 transitions. [2023-12-16 18:17:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 18:17:13,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:13,861 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:17:13,874 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 18:17:14,064 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 18:17:14,065 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:14,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:14,065 INFO L85 PathProgramCache]: Analyzing trace with hash -247028584, now seen corresponding path program 1 times [2023-12-16 18:17:14,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:14,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893795709] [2023-12-16 18:17:14,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:14,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:17:14,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:14,088 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 18:17:14,090 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 18:17:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:14,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 18:17:14,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:14,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:17:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:14,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:14,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893795709] [2023-12-16 18:17:14,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893795709] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:17:14,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:17:14,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-16 18:17:14,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823762186] [2023-12-16 18:17:14,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:17:14,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 18:17:14,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:14,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 18:17:14,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-16 18:17:14,735 INFO L87 Difference]: Start difference. First operand 9761 states and 14034 transitions. Second operand has 16 states, 16 states have (on average 6.75) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:20,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:20,409 INFO L93 Difference]: Finished difference Result 140220 states and 197318 transitions. [2023-12-16 18:17:20,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-16 18:17:20,410 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.75) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-16 18:17:20,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:20,604 INFO L225 Difference]: With dead ends: 140220 [2023-12-16 18:17:20,604 INFO L226 Difference]: Without dead ends: 130480 [2023-12-16 18:17:20,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4645 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2821, Invalid=10061, Unknown=0, NotChecked=0, Total=12882 [2023-12-16 18:17:20,649 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 2404 mSDsluCounter, 2034 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2404 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 2318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:20,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2404 Valid, 2330 Invalid, 2318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 18:17:20,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130480 states. [2023-12-16 18:17:21,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130480 to 20558. [2023-12-16 18:17:21,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20558 states, 20557 states have (on average 1.401809602568468) internal successors, (28817), 20557 states have internal predecessors, (28817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20558 states to 20558 states and 28817 transitions. [2023-12-16 18:17:21,883 INFO L78 Accepts]: Start accepts. Automaton has 20558 states and 28817 transitions. Word has length 60 [2023-12-16 18:17:21,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:21,883 INFO L495 AbstractCegarLoop]: Abstraction has 20558 states and 28817 transitions. [2023-12-16 18:17:21,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.75) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:21,883 INFO L276 IsEmpty]: Start isEmpty. Operand 20558 states and 28817 transitions. [2023-12-16 18:17:21,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 18:17:21,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:21,886 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:17:21,892 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 18:17:22,087 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 18:17:22,087 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:22,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:22,087 INFO L85 PathProgramCache]: Analyzing trace with hash -44135606, now seen corresponding path program 1 times [2023-12-16 18:17:22,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:22,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240748400] [2023-12-16 18:17:22,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:22,088 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 18:17:22,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:22,089 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 18:17:22,090 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 18:17:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:22,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:17:22,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:22,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:22,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:22,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240748400] [2023-12-16 18:17:22,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240748400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:22,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:22,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:17:22,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790424398] [2023-12-16 18:17:22,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:22,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:17:22,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:22,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:17:22,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:22,171 INFO L87 Difference]: Start difference. First operand 20558 states and 28817 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:22,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:22,258 INFO L93 Difference]: Finished difference Result 41089 states and 57604 transitions. [2023-12-16 18:17:22,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:17:22,258 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-16 18:17:22,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:22,281 INFO L225 Difference]: With dead ends: 41089 [2023-12-16 18:17:22,281 INFO L226 Difference]: Without dead ends: 20560 [2023-12-16 18:17:22,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 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 18:17:22,307 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 65 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:22,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 263 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:22,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20560 states. [2023-12-16 18:17:22,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20560 to 20390. [2023-12-16 18:17:22,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20390 states, 20389 states have (on average 1.383834420520869) internal successors, (28215), 20389 states have internal predecessors, (28215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:22,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20390 states to 20390 states and 28215 transitions. [2023-12-16 18:17:22,776 INFO L78 Accepts]: Start accepts. Automaton has 20390 states and 28215 transitions. Word has length 61 [2023-12-16 18:17:22,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:22,776 INFO L495 AbstractCegarLoop]: Abstraction has 20390 states and 28215 transitions. [2023-12-16 18:17:22,776 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:22,776 INFO L276 IsEmpty]: Start isEmpty. Operand 20390 states and 28215 transitions. [2023-12-16 18:17:22,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 18:17:22,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:22,782 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:17:22,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-16 18:17:22,984 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 18:17:22,984 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:22,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:22,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1774270321, now seen corresponding path program 1 times [2023-12-16 18:17:22,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:22,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497742316] [2023-12-16 18:17:22,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:22,985 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 18:17:22,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:22,987 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 18:17:22,988 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 18:17:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:23,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:17:23,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:23,090 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:23,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:23,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:23,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497742316] [2023-12-16 18:17:23,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497742316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:23,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:23,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:17:23,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165609744] [2023-12-16 18:17:23,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:23,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:17:23,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:23,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:17:23,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:23,092 INFO L87 Difference]: Start difference. First operand 20390 states and 28215 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:23,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:23,160 INFO L93 Difference]: Finished difference Result 28853 states and 39613 transitions. [2023-12-16 18:17:23,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:17:23,160 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-16 18:17:23,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:23,179 INFO L225 Difference]: With dead ends: 28853 [2023-12-16 18:17:23,179 INFO L226 Difference]: Without dead ends: 16959 [2023-12-16 18:17:23,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 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 18:17:23,194 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 67 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:23,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 259 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:23,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16959 states. [2023-12-16 18:17:23,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16959 to 15415. [2023-12-16 18:17:23,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15415 states, 15414 states have (on average 1.359413520176463) internal successors, (20954), 15414 states have internal predecessors, (20954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:23,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15415 states to 15415 states and 20954 transitions. [2023-12-16 18:17:23,488 INFO L78 Accepts]: Start accepts. Automaton has 15415 states and 20954 transitions. Word has length 61 [2023-12-16 18:17:23,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:23,489 INFO L495 AbstractCegarLoop]: Abstraction has 15415 states and 20954 transitions. [2023-12-16 18:17:23,489 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:23,489 INFO L276 IsEmpty]: Start isEmpty. Operand 15415 states and 20954 transitions. [2023-12-16 18:17:23,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 18:17:23,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:23,491 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:17:23,509 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 18:17:23,693 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 18:17:23,693 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:23,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:23,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1873896420, now seen corresponding path program 1 times [2023-12-16 18:17:23,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:23,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460961493] [2023-12-16 18:17:23,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:23,694 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 18:17:23,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:23,695 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 18:17:23,697 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 18:17:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:23,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 18:17:23,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 18:17:23,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:17:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 18:17:23,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:23,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460961493] [2023-12-16 18:17:23,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460961493] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:17:23,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:17:23,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-16 18:17:23,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549286936] [2023-12-16 18:17:23,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:17:23,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 18:17:23,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:23,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 18:17:23,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:17:23,879 INFO L87 Difference]: Start difference. First operand 15415 states and 20954 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:23,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:23,977 INFO L93 Difference]: Finished difference Result 48363 states and 65983 transitions. [2023-12-16 18:17:23,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:17:23,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-16 18:17:23,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:24,110 INFO L225 Difference]: With dead ends: 48363 [2023-12-16 18:17:24,111 INFO L226 Difference]: Without dead ends: 36189 [2023-12-16 18:17:24,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 18:17:24,120 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 342 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:24,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 572 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:24,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36189 states. [2023-12-16 18:17:24,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36189 to 36147. [2023-12-16 18:17:24,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36147 states, 36146 states have (on average 1.3413932385326177) internal successors, (48486), 36146 states have internal predecessors, (48486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36147 states to 36147 states and 48486 transitions. [2023-12-16 18:17:24,592 INFO L78 Accepts]: Start accepts. Automaton has 36147 states and 48486 transitions. Word has length 61 [2023-12-16 18:17:24,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:24,592 INFO L495 AbstractCegarLoop]: Abstraction has 36147 states and 48486 transitions. [2023-12-16 18:17:24,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:24,592 INFO L276 IsEmpty]: Start isEmpty. Operand 36147 states and 48486 transitions. [2023-12-16 18:17:24,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 18:17:24,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:24,594 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:17:24,599 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 18:17:24,797 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 18:17:24,797 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:24,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:24,797 INFO L85 PathProgramCache]: Analyzing trace with hash -774824593, now seen corresponding path program 1 times [2023-12-16 18:17:24,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:24,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598378645] [2023-12-16 18:17:24,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:24,798 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 18:17:24,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:24,799 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 18:17:24,803 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 18:17:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:24,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:17:24,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:24,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:24,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:24,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598378645] [2023-12-16 18:17:24,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598378645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:24,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:24,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:17:24,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030208440] [2023-12-16 18:17:24,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:24,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:17:24,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:24,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:17:24,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:24,878 INFO L87 Difference]: Start difference. First operand 36147 states and 48486 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:25,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:25,015 INFO L93 Difference]: Finished difference Result 74815 states and 99880 transitions. [2023-12-16 18:17:25,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:17:25,016 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-16 18:17:25,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:25,078 INFO L225 Difference]: With dead ends: 74815 [2023-12-16 18:17:25,078 INFO L226 Difference]: Without dead ends: 49178 [2023-12-16 18:17:25,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 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 18:17:25,104 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 62 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:25,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 222 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:25,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49178 states. [2023-12-16 18:17:25,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49178 to 49011. [2023-12-16 18:17:25,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49011 states, 49010 states have (on average 1.322832075086717) internal successors, (64832), 49010 states have internal predecessors, (64832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:25,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49011 states to 49011 states and 64832 transitions. [2023-12-16 18:17:25,950 INFO L78 Accepts]: Start accepts. Automaton has 49011 states and 64832 transitions. Word has length 61 [2023-12-16 18:17:25,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:25,951 INFO L495 AbstractCegarLoop]: Abstraction has 49011 states and 64832 transitions. [2023-12-16 18:17:25,951 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:25,951 INFO L276 IsEmpty]: Start isEmpty. Operand 49011 states and 64832 transitions. [2023-12-16 18:17:25,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 18:17:25,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:25,953 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:17:25,958 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 18:17:26,158 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 18:17:26,159 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:26,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:26,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1680834964, now seen corresponding path program 1 times [2023-12-16 18:17:26,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:26,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904892462] [2023-12-16 18:17:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:26,160 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 18:17:26,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:26,161 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 18:17:26,161 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 18:17:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:26,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:17:26,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:26,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:26,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:26,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904892462] [2023-12-16 18:17:26,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904892462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:26,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:26,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:17:26,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234832714] [2023-12-16 18:17:26,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:26,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:17:26,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:26,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:17:26,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:26,246 INFO L87 Difference]: Start difference. First operand 49011 states and 64832 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:26,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:26,540 INFO L93 Difference]: Finished difference Result 81644 states and 107436 transitions. [2023-12-16 18:17:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:17:26,540 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-16 18:17:26,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:26,588 INFO L225 Difference]: With dead ends: 81644 [2023-12-16 18:17:26,588 INFO L226 Difference]: Without dead ends: 40803 [2023-12-16 18:17:26,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 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 18:17:26,602 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 65 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:26,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 263 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:26,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40803 states. [2023-12-16 18:17:27,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40803 to 39085. [2023-12-16 18:17:27,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39085 states, 39084 states have (on average 1.2944427387166104) internal successors, (50592), 39084 states have internal predecessors, (50592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:27,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39085 states to 39085 states and 50592 transitions. [2023-12-16 18:17:27,272 INFO L78 Accepts]: Start accepts. Automaton has 39085 states and 50592 transitions. Word has length 61 [2023-12-16 18:17:27,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:27,273 INFO L495 AbstractCegarLoop]: Abstraction has 39085 states and 50592 transitions. [2023-12-16 18:17:27,273 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:27,273 INFO L276 IsEmpty]: Start isEmpty. Operand 39085 states and 50592 transitions. [2023-12-16 18:17:27,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 18:17:27,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:27,284 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:17:27,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-16 18:17:27,486 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 18:17:27,487 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:27,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:27,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1318326088, now seen corresponding path program 1 times [2023-12-16 18:17:27,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:27,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667308990] [2023-12-16 18:17:27,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:27,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:17:27,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:27,489 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 18:17:27,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-16 18:17:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:27,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 18:17:27,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:27,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:17:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:27,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:27,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667308990] [2023-12-16 18:17:27,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667308990] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:17:27,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:17:27,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-16 18:17:27,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322185491] [2023-12-16 18:17:27,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:17:27,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 18:17:27,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:27,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 18:17:27,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:17:27,726 INFO L87 Difference]: Start difference. First operand 39085 states and 50592 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:28,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:28,231 INFO L93 Difference]: Finished difference Result 108421 states and 139810 transitions. [2023-12-16 18:17:28,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 18:17:28,232 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-16 18:17:28,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:28,322 INFO L225 Difference]: With dead ends: 108421 [2023-12-16 18:17:28,322 INFO L226 Difference]: Without dead ends: 69363 [2023-12-16 18:17:28,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 18:17:28,341 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 1221 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:28,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 331 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:17:28,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69363 states. [2023-12-16 18:17:28,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69363 to 44190. [2023-12-16 18:17:28,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44190 states, 44189 states have (on average 1.2812690941184457) internal successors, (56618), 44189 states have internal predecessors, (56618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:29,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44190 states to 44190 states and 56618 transitions. [2023-12-16 18:17:29,023 INFO L78 Accepts]: Start accepts. Automaton has 44190 states and 56618 transitions. Word has length 62 [2023-12-16 18:17:29,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:29,023 INFO L495 AbstractCegarLoop]: Abstraction has 44190 states and 56618 transitions. [2023-12-16 18:17:29,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:29,024 INFO L276 IsEmpty]: Start isEmpty. Operand 44190 states and 56618 transitions. [2023-12-16 18:17:29,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 18:17:29,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:29,056 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:17:29,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-16 18:17:29,258 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 18:17:29,259 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:29,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:29,259 INFO L85 PathProgramCache]: Analyzing trace with hash 2068852225, now seen corresponding path program 1 times [2023-12-16 18:17:29,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:29,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860720866] [2023-12-16 18:17:29,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:29,260 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 18:17:29,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:29,261 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 18:17:29,280 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 18:17:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:29,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:17:29,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:29,345 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 18:17:29,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:29,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:29,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860720866] [2023-12-16 18:17:29,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860720866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:29,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:29,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:17:29,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737055482] [2023-12-16 18:17:29,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:29,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:17:29,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:29,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:17:29,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:29,348 INFO L87 Difference]: Start difference. First operand 44190 states and 56618 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:29,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:29,472 INFO L93 Difference]: Finished difference Result 60136 states and 76841 transitions. [2023-12-16 18:17:29,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:17:29,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-16 18:17:29,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:29,488 INFO L225 Difference]: With dead ends: 60136 [2023-12-16 18:17:29,488 INFO L226 Difference]: Without dead ends: 16020 [2023-12-16 18:17:29,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 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 18:17:29,509 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 42 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:29,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 203 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:29,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16020 states. [2023-12-16 18:17:29,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16020 to 14554. [2023-12-16 18:17:29,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14554 states, 14553 states have (on average 1.2558922558922558) internal successors, (18277), 14553 states have internal predecessors, (18277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14554 states to 14554 states and 18277 transitions. [2023-12-16 18:17:29,863 INFO L78 Accepts]: Start accepts. Automaton has 14554 states and 18277 transitions. Word has length 62 [2023-12-16 18:17:29,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:29,863 INFO L495 AbstractCegarLoop]: Abstraction has 14554 states and 18277 transitions. [2023-12-16 18:17:29,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:29,863 INFO L276 IsEmpty]: Start isEmpty. Operand 14554 states and 18277 transitions. [2023-12-16 18:17:29,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 18:17:29,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:29,865 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:17:29,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-16 18:17:30,067 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 18:17:30,067 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:30,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:30,068 INFO L85 PathProgramCache]: Analyzing trace with hash 976647389, now seen corresponding path program 1 times [2023-12-16 18:17:30,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:30,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932892265] [2023-12-16 18:17:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:30,068 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 18:17:30,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:30,069 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 18:17:30,071 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 18:17:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:30,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 18:17:30,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:30,249 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:30,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:17:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:30,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:30,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932892265] [2023-12-16 18:17:30,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932892265] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:17:30,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:17:30,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-16 18:17:30,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433954656] [2023-12-16 18:17:30,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:17:30,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 18:17:30,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:30,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 18:17:30,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:17:30,295 INFO L87 Difference]: Start difference. First operand 14554 states and 18277 transitions. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:30,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:30,563 INFO L93 Difference]: Finished difference Result 39141 states and 48970 transitions. [2023-12-16 18:17:30,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 18:17:30,563 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-16 18:17:30,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:30,589 INFO L225 Difference]: With dead ends: 39141 [2023-12-16 18:17:30,589 INFO L226 Difference]: Without dead ends: 24643 [2023-12-16 18:17:30,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 18:17:30,604 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 427 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:30,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 437 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 18:17:30,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24643 states. [2023-12-16 18:17:30,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24643 to 16216. [2023-12-16 18:17:30,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16216 states, 16215 states have (on average 1.2345975948196115) internal successors, (20019), 16215 states have internal predecessors, (20019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:30,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16216 states to 16216 states and 20019 transitions. [2023-12-16 18:17:30,963 INFO L78 Accepts]: Start accepts. Automaton has 16216 states and 20019 transitions. Word has length 62 [2023-12-16 18:17:30,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:30,963 INFO L495 AbstractCegarLoop]: Abstraction has 16216 states and 20019 transitions. [2023-12-16 18:17:30,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:30,963 INFO L276 IsEmpty]: Start isEmpty. Operand 16216 states and 20019 transitions. [2023-12-16 18:17:30,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 18:17:30,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:30,965 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:17:30,969 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 18:17:31,166 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 18:17:31,167 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:31,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:31,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1679878672, now seen corresponding path program 1 times [2023-12-16 18:17:31,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:31,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004123022] [2023-12-16 18:17:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:31,168 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 18:17:31,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:31,169 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 18:17:31,188 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 18:17:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:31,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 18:17:31,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:31,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:17:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:31,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:31,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004123022] [2023-12-16 18:17:31,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004123022] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:17:31,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:17:31,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-16 18:17:31,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712225475] [2023-12-16 18:17:31,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:17:31,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 18:17:31,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:31,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 18:17:31,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 18:17:31,409 INFO L87 Difference]: Start difference. First operand 16216 states and 20019 transitions. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:31,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:31,698 INFO L93 Difference]: Finished difference Result 35335 states and 43575 transitions. [2023-12-16 18:17:31,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 18:17:31,699 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-16 18:17:31,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:31,715 INFO L225 Difference]: With dead ends: 35335 [2023-12-16 18:17:31,715 INFO L226 Difference]: Without dead ends: 19250 [2023-12-16 18:17:31,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 18:17:31,722 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 521 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:31,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 193 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:17:31,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19250 states. [2023-12-16 18:17:31,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19250 to 16986. [2023-12-16 18:17:31,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16986 states, 16985 states have (on average 1.2180747718575213) internal successors, (20689), 16985 states have internal predecessors, (20689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:31,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16986 states to 16986 states and 20689 transitions. [2023-12-16 18:17:31,879 INFO L78 Accepts]: Start accepts. Automaton has 16986 states and 20689 transitions. Word has length 62 [2023-12-16 18:17:31,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:31,879 INFO L495 AbstractCegarLoop]: Abstraction has 16986 states and 20689 transitions. [2023-12-16 18:17:31,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:31,879 INFO L276 IsEmpty]: Start isEmpty. Operand 16986 states and 20689 transitions. [2023-12-16 18:17:31,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 18:17:31,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:31,881 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:17:31,885 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 18:17:32,083 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 18:17:32,083 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:32,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:32,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1836329263, now seen corresponding path program 1 times [2023-12-16 18:17:32,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:32,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97737676] [2023-12-16 18:17:32,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:32,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:17:32,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:32,085 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 18:17:32,086 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 18:17:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:32,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:17:32,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 18:17:32,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:32,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:32,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97737676] [2023-12-16 18:17:32,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97737676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:32,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:32,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:17:32,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670067179] [2023-12-16 18:17:32,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:32,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:17:32,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:32,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:17:32,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:17:32,297 INFO L87 Difference]: Start difference. First operand 16986 states and 20689 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:32,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:32,424 INFO L93 Difference]: Finished difference Result 27335 states and 33511 transitions. [2023-12-16 18:17:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:17:32,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-16 18:17:32,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:32,439 INFO L225 Difference]: With dead ends: 27335 [2023-12-16 18:17:32,439 INFO L226 Difference]: Without dead ends: 23242 [2023-12-16 18:17:32,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:17:32,443 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 251 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:32,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 446 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:17:32,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23242 states. [2023-12-16 18:17:32,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23242 to 19001. [2023-12-16 18:17:32,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19001 states, 19000 states have (on average 1.2106842105263158) internal successors, (23003), 19000 states have internal predecessors, (23003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:32,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19001 states to 19001 states and 23003 transitions. [2023-12-16 18:17:32,600 INFO L78 Accepts]: Start accepts. Automaton has 19001 states and 23003 transitions. Word has length 64 [2023-12-16 18:17:32,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:32,601 INFO L495 AbstractCegarLoop]: Abstraction has 19001 states and 23003 transitions. [2023-12-16 18:17:32,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:32,601 INFO L276 IsEmpty]: Start isEmpty. Operand 19001 states and 23003 transitions. [2023-12-16 18:17:32,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 18:17:32,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:32,603 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:17:32,605 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 18:17:32,805 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 18:17:32,805 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:32,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:32,805 INFO L85 PathProgramCache]: Analyzing trace with hash -732049210, now seen corresponding path program 1 times [2023-12-16 18:17:32,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:32,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367401535] [2023-12-16 18:17:32,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:32,806 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 18:17:32,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:32,807 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 18:17:32,828 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 18:17:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:32,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:17:32,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:33,051 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 18:17:33,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:33,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:33,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367401535] [2023-12-16 18:17:33,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367401535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:33,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:33,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:17:33,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344778251] [2023-12-16 18:17:33,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:33,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:17:33,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:33,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:17:33,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:17:33,053 INFO L87 Difference]: Start difference. First operand 19001 states and 23003 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:33,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:33,173 INFO L93 Difference]: Finished difference Result 30151 states and 36814 transitions. [2023-12-16 18:17:33,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:17:33,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-16 18:17:33,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:33,198 INFO L225 Difference]: With dead ends: 30151 [2023-12-16 18:17:33,198 INFO L226 Difference]: Without dead ends: 24821 [2023-12-16 18:17:33,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:17:33,209 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 255 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:33,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 450 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 18:17:33,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24821 states. [2023-12-16 18:17:33,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24821 to 22210. [2023-12-16 18:17:33,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22210 states, 22209 states have (on average 1.204061416542843) internal successors, (26741), 22209 states have internal predecessors, (26741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:33,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22210 states to 22210 states and 26741 transitions. [2023-12-16 18:17:33,405 INFO L78 Accepts]: Start accepts. Automaton has 22210 states and 26741 transitions. Word has length 64 [2023-12-16 18:17:33,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:33,405 INFO L495 AbstractCegarLoop]: Abstraction has 22210 states and 26741 transitions. [2023-12-16 18:17:33,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:33,406 INFO L276 IsEmpty]: Start isEmpty. Operand 22210 states and 26741 transitions. [2023-12-16 18:17:33,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 18:17:33,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:33,407 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:17:33,411 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 18:17:33,609 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 18:17:33,610 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:33,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:33,610 INFO L85 PathProgramCache]: Analyzing trace with hash 654929470, now seen corresponding path program 1 times [2023-12-16 18:17:33,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:33,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462381897] [2023-12-16 18:17:33,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:33,610 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 18:17:33,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:33,615 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 18:17:33,616 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 18:17:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:33,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:17:33,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:33,724 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 18:17:33,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:33,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:33,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462381897] [2023-12-16 18:17:33,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462381897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:33,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:33,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:17:33,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538622888] [2023-12-16 18:17:33,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:33,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:17:33,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:33,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:17:33,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:33,725 INFO L87 Difference]: Start difference. First operand 22210 states and 26741 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:33,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:33,783 INFO L93 Difference]: Finished difference Result 31950 states and 38537 transitions. [2023-12-16 18:17:33,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:17:33,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-16 18:17:33,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:33,795 INFO L225 Difference]: With dead ends: 31950 [2023-12-16 18:17:33,795 INFO L226 Difference]: Without dead ends: 12139 [2023-12-16 18:17:33,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 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 18:17:33,808 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 27 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:33,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 182 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:33,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12139 states. [2023-12-16 18:17:33,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12139 to 11531. [2023-12-16 18:17:33,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11531 states, 11530 states have (on average 1.1755420641803989) internal successors, (13554), 11530 states have internal predecessors, (13554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:33,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11531 states to 11531 states and 13554 transitions. [2023-12-16 18:17:33,954 INFO L78 Accepts]: Start accepts. Automaton has 11531 states and 13554 transitions. Word has length 64 [2023-12-16 18:17:33,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:33,954 INFO L495 AbstractCegarLoop]: Abstraction has 11531 states and 13554 transitions. [2023-12-16 18:17:33,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:33,954 INFO L276 IsEmpty]: Start isEmpty. Operand 11531 states and 13554 transitions. [2023-12-16 18:17:33,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 18:17:33,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:33,955 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 18:17:33,962 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 18:17:34,157 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 18:17:34,157 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:34,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:34,158 INFO L85 PathProgramCache]: Analyzing trace with hash 470464413, now seen corresponding path program 1 times [2023-12-16 18:17:34,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:34,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611830431] [2023-12-16 18:17:34,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:34,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:17:34,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:34,160 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 18:17:34,162 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 (26)] Waiting until timeout for monitored process [2023-12-16 18:17:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:34,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 18:17:34,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 18:17:34,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:34,372 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:34,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611830431] [2023-12-16 18:17:34,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611830431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:34,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:34,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 18:17:34,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732957701] [2023-12-16 18:17:34,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:34,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 18:17:34,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:34,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 18:17:34,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:17:34,373 INFO L87 Difference]: Start difference. First operand 11531 states and 13554 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:34,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:34,431 INFO L93 Difference]: Finished difference Result 18752 states and 22312 transitions. [2023-12-16 18:17:34,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 18:17:34,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-16 18:17:34,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:34,446 INFO L225 Difference]: With dead ends: 18752 [2023-12-16 18:17:34,446 INFO L226 Difference]: Without dead ends: 14072 [2023-12-16 18:17:34,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 18:17:34,452 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 256 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:34,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 449 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:34,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14072 states. [2023-12-16 18:17:34,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14072 to 12019. [2023-12-16 18:17:34,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12019 states, 12018 states have (on average 1.163754368447329) internal successors, (13986), 12018 states have internal predecessors, (13986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:34,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12019 states to 12019 states and 13986 transitions. [2023-12-16 18:17:34,549 INFO L78 Accepts]: Start accepts. Automaton has 12019 states and 13986 transitions. Word has length 64 [2023-12-16 18:17:34,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:34,549 INFO L495 AbstractCegarLoop]: Abstraction has 12019 states and 13986 transitions. [2023-12-16 18:17:34,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:34,549 INFO L276 IsEmpty]: Start isEmpty. Operand 12019 states and 13986 transitions. [2023-12-16 18:17:34,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-16 18:17:34,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:34,550 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:17:34,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-16 18:17:34,753 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 18:17:34,753 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:34,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:34,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1172816724, now seen corresponding path program 1 times [2023-12-16 18:17:34,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:34,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309213810] [2023-12-16 18:17:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:34,754 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 18:17:34,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:34,781 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 18:17:34,787 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 18:17:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:34,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:17:34,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:34,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:34,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:34,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309213810] [2023-12-16 18:17:34,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309213810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:34,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:34,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:17:34,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190841660] [2023-12-16 18:17:34,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:34,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:17:34,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:34,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:17:34,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:34,943 INFO L87 Difference]: Start difference. First operand 12019 states and 13986 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:34,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:34,976 INFO L93 Difference]: Finished difference Result 16073 states and 18683 transitions. [2023-12-16 18:17:34,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:17:34,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-16 18:17:34,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:34,987 INFO L225 Difference]: With dead ends: 16073 [2023-12-16 18:17:34,987 INFO L226 Difference]: Without dead ends: 11241 [2023-12-16 18:17:34,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 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 18:17:34,993 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 51 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:34,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 234 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:34,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11241 states. [2023-12-16 18:17:35,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11241 to 11239. [2023-12-16 18:17:35,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11239 states, 11238 states have (on average 1.1565225129026517) internal successors, (12997), 11238 states have internal predecessors, (12997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:35,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11239 states to 11239 states and 12997 transitions. [2023-12-16 18:17:35,102 INFO L78 Accepts]: Start accepts. Automaton has 11239 states and 12997 transitions. Word has length 69 [2023-12-16 18:17:35,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:35,102 INFO L495 AbstractCegarLoop]: Abstraction has 11239 states and 12997 transitions. [2023-12-16 18:17:35,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:35,102 INFO L276 IsEmpty]: Start isEmpty. Operand 11239 states and 12997 transitions. [2023-12-16 18:17:35,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-16 18:17:35,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:35,103 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:17:35,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-16 18:17:35,306 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 18:17:35,306 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:35,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:35,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1998809573, now seen corresponding path program 1 times [2023-12-16 18:17:35,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:35,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606943047] [2023-12-16 18:17:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:35,307 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 18:17:35,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:35,308 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 18:17:35,319 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 (28)] Waiting until timeout for monitored process [2023-12-16 18:17:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:35,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:17:35,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:35,441 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:35,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:35,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:35,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606943047] [2023-12-16 18:17:35,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606943047] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:35,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:35,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:17:35,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031990243] [2023-12-16 18:17:35,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:35,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:17:35,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:35,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:17:35,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:35,443 INFO L87 Difference]: Start difference. First operand 11239 states and 12997 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:35,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:35,489 INFO L93 Difference]: Finished difference Result 13124 states and 15100 transitions. [2023-12-16 18:17:35,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:17:35,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-16 18:17:35,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:35,497 INFO L225 Difference]: With dead ends: 13124 [2023-12-16 18:17:35,497 INFO L226 Difference]: Without dead ends: 8983 [2023-12-16 18:17:35,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 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 18:17:35,501 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 52 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:35,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 255 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:35,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8983 states. [2023-12-16 18:17:35,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8983 to 8981. [2023-12-16 18:17:35,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8981 states, 8980 states have (on average 1.1430957683741647) internal successors, (10265), 8980 states have internal predecessors, (10265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:35,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8981 states to 8981 states and 10265 transitions. [2023-12-16 18:17:35,586 INFO L78 Accepts]: Start accepts. Automaton has 8981 states and 10265 transitions. Word has length 69 [2023-12-16 18:17:35,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:35,586 INFO L495 AbstractCegarLoop]: Abstraction has 8981 states and 10265 transitions. [2023-12-16 18:17:35,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:35,586 INFO L276 IsEmpty]: Start isEmpty. Operand 8981 states and 10265 transitions. [2023-12-16 18:17:35,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 18:17:35,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:35,588 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:17:35,592 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 18:17:35,790 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 18:17:35,790 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:35,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:35,791 INFO L85 PathProgramCache]: Analyzing trace with hash -97707833, now seen corresponding path program 1 times [2023-12-16 18:17:35,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:35,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053839493] [2023-12-16 18:17:35,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:35,791 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 18:17:35,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:35,792 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 18:17:35,819 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 (29)] Waiting until timeout for monitored process [2023-12-16 18:17:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:35,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 18:17:35,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 18:17:35,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 18:17:35,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:35,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053839493] [2023-12-16 18:17:35,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053839493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 18:17:35,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 18:17:35,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 18:17:35,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282534958] [2023-12-16 18:17:35,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 18:17:35,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 18:17:35,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:35,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 18:17:35,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 18:17:35,871 INFO L87 Difference]: Start difference. First operand 8981 states and 10265 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:35,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:35,907 INFO L93 Difference]: Finished difference Result 12309 states and 14028 transitions. [2023-12-16 18:17:35,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 18:17:35,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-16 18:17:35,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:35,913 INFO L225 Difference]: With dead ends: 12309 [2023-12-16 18:17:35,913 INFO L226 Difference]: Without dead ends: 10264 [2023-12-16 18:17:35,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 68 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 18:17:35,917 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 74 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:35,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 182 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 18:17:35,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10264 states. [2023-12-16 18:17:35,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10264 to 8650. [2023-12-16 18:17:35,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8650 states, 8649 states have (on average 1.1438316568389408) internal successors, (9893), 8649 states have internal predecessors, (9893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:36,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8650 states to 8650 states and 9893 transitions. [2023-12-16 18:17:36,001 INFO L78 Accepts]: Start accepts. Automaton has 8650 states and 9893 transitions. Word has length 70 [2023-12-16 18:17:36,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:36,001 INFO L495 AbstractCegarLoop]: Abstraction has 8650 states and 9893 transitions. [2023-12-16 18:17:36,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:36,001 INFO L276 IsEmpty]: Start isEmpty. Operand 8650 states and 9893 transitions. [2023-12-16 18:17:36,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 18:17:36,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:36,003 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:17:36,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-16 18:17:36,205 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 18:17:36,205 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:36,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:36,205 INFO L85 PathProgramCache]: Analyzing trace with hash 30985211, now seen corresponding path program 1 times [2023-12-16 18:17:36,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:36,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225574859] [2023-12-16 18:17:36,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:36,206 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 18:17:36,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:36,207 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 18:17:36,225 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 18:17:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:36,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 18:17:36,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:37,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:17:38,304 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:38,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:38,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225574859] [2023-12-16 18:17:38,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225574859] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:17:38,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:17:38,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35 [2023-12-16 18:17:38,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864810294] [2023-12-16 18:17:38,305 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:17:38,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-16 18:17:38,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:38,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-16 18:17:38,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 18:17:38,306 INFO L87 Difference]: Start difference. First operand 8650 states and 9893 transitions. Second operand has 35 states, 35 states have (on average 3.742857142857143) internal successors, (131), 35 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:49,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:49,733 INFO L93 Difference]: Finished difference Result 22333 states and 25541 transitions. [2023-12-16 18:17:49,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2023-12-16 18:17:49,734 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.742857142857143) internal successors, (131), 35 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-16 18:17:49,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:49,746 INFO L225 Difference]: With dead ends: 22333 [2023-12-16 18:17:49,746 INFO L226 Difference]: Without dead ends: 15217 [2023-12-16 18:17:49,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11229 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=4617, Invalid=23775, Unknown=0, NotChecked=0, Total=28392 [2023-12-16 18:17:49,754 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 4255 mSDsluCounter, 4607 mSDsCounter, 0 mSdLazyCounter, 3005 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4255 SdHoareTripleChecker+Valid, 4923 SdHoareTripleChecker+Invalid, 3129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 3005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:49,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4255 Valid, 4923 Invalid, 3129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 3005 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-16 18:17:49,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15217 states. [2023-12-16 18:17:49,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15217 to 7654. [2023-12-16 18:17:49,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7654 states, 7653 states have (on average 1.1432118123611656) internal successors, (8749), 7653 states have internal predecessors, (8749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7654 states to 7654 states and 8749 transitions. [2023-12-16 18:17:49,824 INFO L78 Accepts]: Start accepts. Automaton has 7654 states and 8749 transitions. Word has length 70 [2023-12-16 18:17:49,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:49,824 INFO L495 AbstractCegarLoop]: Abstraction has 7654 states and 8749 transitions. [2023-12-16 18:17:49,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.742857142857143) internal successors, (131), 35 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:49,824 INFO L276 IsEmpty]: Start isEmpty. Operand 7654 states and 8749 transitions. [2023-12-16 18:17:49,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-16 18:17:49,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:49,826 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:17:49,829 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 18:17:50,029 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 18:17:50,029 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:50,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:50,029 INFO L85 PathProgramCache]: Analyzing trace with hash 474770853, now seen corresponding path program 1 times [2023-12-16 18:17:50,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:50,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108792331] [2023-12-16 18:17:50,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:50,030 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 18:17:50,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:50,031 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 18:17:50,046 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 18:17:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:50,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 18:17:50,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 60 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 18:17:50,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:17:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 60 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 18:17:50,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:50,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108792331] [2023-12-16 18:17:50,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108792331] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:17:50,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:17:50,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-16 18:17:50,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830669363] [2023-12-16 18:17:50,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:17:50,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 18:17:50,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:50,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 18:17:50,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-16 18:17:50,794 INFO L87 Difference]: Start difference. First operand 7654 states and 8749 transitions. Second operand has 18 states, 18 states have (on average 9.944444444444445) internal successors, (179), 17 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:52,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:52,309 INFO L93 Difference]: Finished difference Result 12735 states and 14567 transitions. [2023-12-16 18:17:52,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-16 18:17:52,310 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.944444444444445) internal successors, (179), 17 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-16 18:17:52,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:52,315 INFO L225 Difference]: With dead ends: 12735 [2023-12-16 18:17:52,315 INFO L226 Difference]: Without dead ends: 6343 [2023-12-16 18:17:52,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=456, Invalid=1436, Unknown=0, NotChecked=0, Total=1892 [2023-12-16 18:17:52,318 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 1133 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:52,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 1284 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 18:17:52,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6343 states. [2023-12-16 18:17:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6343 to 4156. [2023-12-16 18:17:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4156 states, 4155 states have (on average 1.1208182912154032) internal successors, (4657), 4155 states have internal predecessors, (4657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:52,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4156 states to 4156 states and 4657 transitions. [2023-12-16 18:17:52,346 INFO L78 Accepts]: Start accepts. Automaton has 4156 states and 4657 transitions. Word has length 114 [2023-12-16 18:17:52,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:52,347 INFO L495 AbstractCegarLoop]: Abstraction has 4156 states and 4657 transitions. [2023-12-16 18:17:52,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.944444444444445) internal successors, (179), 17 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:52,347 INFO L276 IsEmpty]: Start isEmpty. Operand 4156 states and 4657 transitions. [2023-12-16 18:17:52,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-16 18:17:52,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:52,348 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:17:52,351 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 18:17:52,551 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 18:17:52,551 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:52,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:52,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2073769782, now seen corresponding path program 1 times [2023-12-16 18:17:52,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:52,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312982956] [2023-12-16 18:17:52,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:52,552 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 18:17:52,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:52,553 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 18:17:52,554 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 18:17:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:52,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 18:17:52,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:53,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:17:53,528 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 40 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:53,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:53,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312982956] [2023-12-16 18:17:53,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312982956] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:17:53,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:17:53,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2023-12-16 18:17:53,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164231238] [2023-12-16 18:17:53,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:17:53,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 18:17:53,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:53,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 18:17:53,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-12-16 18:17:53,530 INFO L87 Difference]: Start difference. First operand 4156 states and 4657 transitions. Second operand has 23 states, 23 states have (on average 9.347826086956522) internal successors, (215), 23 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:55,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:55,633 INFO L93 Difference]: Finished difference Result 10617 states and 11784 transitions. [2023-12-16 18:17:55,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-16 18:17:55,633 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.347826086956522) internal successors, (215), 23 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-16 18:17:55,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:55,641 INFO L225 Difference]: With dead ends: 10617 [2023-12-16 18:17:55,641 INFO L226 Difference]: Without dead ends: 9557 [2023-12-16 18:17:55,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=780, Invalid=3126, Unknown=0, NotChecked=0, Total=3906 [2023-12-16 18:17:55,643 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1439 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 3263 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:55,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 3263 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 18:17:55,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9557 states. [2023-12-16 18:17:55,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9557 to 6048. [2023-12-16 18:17:55,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6048 states, 6047 states have (on average 1.1132793120555649) internal successors, (6732), 6047 states have internal predecessors, (6732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:55,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6048 states to 6048 states and 6732 transitions. [2023-12-16 18:17:55,694 INFO L78 Accepts]: Start accepts. Automaton has 6048 states and 6732 transitions. Word has length 114 [2023-12-16 18:17:55,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:55,694 INFO L495 AbstractCegarLoop]: Abstraction has 6048 states and 6732 transitions. [2023-12-16 18:17:55,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.347826086956522) internal successors, (215), 23 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:55,694 INFO L276 IsEmpty]: Start isEmpty. Operand 6048 states and 6732 transitions. [2023-12-16 18:17:55,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-16 18:17:55,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:55,696 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:17:55,701 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 18:17:55,899 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 18:17:55,899 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:55,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:55,899 INFO L85 PathProgramCache]: Analyzing trace with hash -919171148, now seen corresponding path program 2 times [2023-12-16 18:17:55,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:55,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122580065] [2023-12-16 18:17:55,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 18:17:55,900 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 18:17:55,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:55,901 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 18:17:55,902 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 18:17:55,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 18:17:55,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 18:17:55,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 18:17:55,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:56,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:17:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 40 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:17:56,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:56,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122580065] [2023-12-16 18:17:56,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122580065] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:17:56,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:17:56,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2023-12-16 18:17:56,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750904886] [2023-12-16 18:17:56,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:17:56,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 18:17:56,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:56,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 18:17:56,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-12-16 18:17:56,903 INFO L87 Difference]: Start difference. First operand 6048 states and 6732 transitions. Second operand has 23 states, 23 states have (on average 9.347826086956522) internal successors, (215), 23 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:58,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:17:58,903 INFO L93 Difference]: Finished difference Result 12932 states and 14316 transitions. [2023-12-16 18:17:58,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-16 18:17:58,903 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.347826086956522) internal successors, (215), 23 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-16 18:17:58,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:17:58,911 INFO L225 Difference]: With dead ends: 12932 [2023-12-16 18:17:58,911 INFO L226 Difference]: Without dead ends: 10167 [2023-12-16 18:17:58,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=737, Invalid=2923, Unknown=0, NotChecked=0, Total=3660 [2023-12-16 18:17:58,917 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 1350 mSDsluCounter, 3292 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 3494 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 18:17:58,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 3494 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 18:17:58,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10167 states. [2023-12-16 18:17:58,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10167 to 6962. [2023-12-16 18:17:58,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6962 states, 6961 states have (on average 1.1071685102715128) internal successors, (7707), 6961 states have internal predecessors, (7707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:58,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6962 states to 6962 states and 7707 transitions. [2023-12-16 18:17:58,984 INFO L78 Accepts]: Start accepts. Automaton has 6962 states and 7707 transitions. Word has length 114 [2023-12-16 18:17:58,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:17:58,984 INFO L495 AbstractCegarLoop]: Abstraction has 6962 states and 7707 transitions. [2023-12-16 18:17:58,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.347826086956522) internal successors, (215), 23 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:17:58,984 INFO L276 IsEmpty]: Start isEmpty. Operand 6962 states and 7707 transitions. [2023-12-16 18:17:58,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-16 18:17:58,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:17:58,987 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:17:58,992 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 (33)] Forceful destruction successful, exit code 0 [2023-12-16 18:17:59,190 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 18:17:59,190 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:17:59,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:17:59,190 INFO L85 PathProgramCache]: Analyzing trace with hash -199893434, now seen corresponding path program 1 times [2023-12-16 18:17:59,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:17:59,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758148855] [2023-12-16 18:17:59,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:17:59,191 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 18:17:59,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:17:59,192 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 18:17:59,193 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 18:17:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:17:59,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 18:17:59,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:17:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 46 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 18:17:59,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:17:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 46 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 18:17:59,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:17:59,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758148855] [2023-12-16 18:17:59,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758148855] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:17:59,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:17:59,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-16 18:17:59,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981219825] [2023-12-16 18:17:59,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:17:59,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 18:17:59,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:17:59,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 18:17:59,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-16 18:17:59,868 INFO L87 Difference]: Start difference. First operand 6962 states and 7707 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 17 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:01,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:01,434 INFO L93 Difference]: Finished difference Result 11476 states and 12739 transitions. [2023-12-16 18:18:01,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-16 18:18:01,435 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 17 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-16 18:18:01,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:01,443 INFO L225 Difference]: With dead ends: 11476 [2023-12-16 18:18:01,443 INFO L226 Difference]: Without dead ends: 10466 [2023-12-16 18:18:01,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=487, Invalid=1405, Unknown=0, NotChecked=0, Total=1892 [2023-12-16 18:18:01,447 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 1119 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:01,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 1167 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 18:18:01,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10466 states. [2023-12-16 18:18:01,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10466 to 6816. [2023-12-16 18:18:01,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6816 states, 6815 states have (on average 1.1038884812912693) internal successors, (7523), 6815 states have internal predecessors, (7523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:01,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6816 states to 6816 states and 7523 transitions. [2023-12-16 18:18:01,528 INFO L78 Accepts]: Start accepts. Automaton has 6816 states and 7523 transitions. Word has length 114 [2023-12-16 18:18:01,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:01,529 INFO L495 AbstractCegarLoop]: Abstraction has 6816 states and 7523 transitions. [2023-12-16 18:18:01,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 17 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:01,529 INFO L276 IsEmpty]: Start isEmpty. Operand 6816 states and 7523 transitions. [2023-12-16 18:18:01,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-16 18:18:01,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:01,531 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:18:01,536 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 18:18:01,734 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 18:18:01,734 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:01,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:01,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1521437441, now seen corresponding path program 1 times [2023-12-16 18:18:01,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:01,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960025655] [2023-12-16 18:18:01,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:01,735 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 18:18:01,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:01,736 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 18:18:01,737 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 18:18:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:01,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 18:18:01,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:02,636 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 29 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:02,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:18:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 40 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:02,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:02,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960025655] [2023-12-16 18:18:02,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960025655] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:18:02,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:18:02,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2023-12-16 18:18:02,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163430861] [2023-12-16 18:18:02,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:18:02,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 18:18:02,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:02,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 18:18:02,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-12-16 18:18:02,957 INFO L87 Difference]: Start difference. First operand 6816 states and 7523 transitions. Second operand has 23 states, 23 states have (on average 9.304347826086957) internal successors, (214), 23 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:06,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:06,869 INFO L93 Difference]: Finished difference Result 23484 states and 26199 transitions. [2023-12-16 18:18:06,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-16 18:18:06,869 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.304347826086957) internal successors, (214), 23 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-16 18:18:06,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:06,889 INFO L225 Difference]: With dead ends: 23484 [2023-12-16 18:18:06,889 INFO L226 Difference]: Without dead ends: 22351 [2023-12-16 18:18:06,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3085 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1669, Invalid=8431, Unknown=0, NotChecked=0, Total=10100 [2023-12-16 18:18:06,898 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 1751 mSDsluCounter, 3989 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 4209 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:06,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1751 Valid, 4209 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 18:18:06,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22351 states. [2023-12-16 18:18:07,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22351 to 12410. [2023-12-16 18:18:07,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12410 states, 12409 states have (on average 1.1100813925376742) internal successors, (13775), 12409 states have internal predecessors, (13775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:07,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12410 states to 12410 states and 13775 transitions. [2023-12-16 18:18:07,101 INFO L78 Accepts]: Start accepts. Automaton has 12410 states and 13775 transitions. Word has length 114 [2023-12-16 18:18:07,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:07,101 INFO L495 AbstractCegarLoop]: Abstraction has 12410 states and 13775 transitions. [2023-12-16 18:18:07,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.304347826086957) internal successors, (214), 23 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:07,102 INFO L276 IsEmpty]: Start isEmpty. Operand 12410 states and 13775 transitions. [2023-12-16 18:18:07,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-16 18:18:07,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:07,105 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:18:07,107 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 18:18:07,307 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 18:18:07,308 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:07,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:07,308 INFO L85 PathProgramCache]: Analyzing trace with hash 528741611, now seen corresponding path program 2 times [2023-12-16 18:18:07,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:07,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007279413] [2023-12-16 18:18:07,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 18:18:07,308 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 18:18:07,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:07,309 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 18:18:07,311 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 18:18:07,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 18:18:07,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 18:18:07,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 18:18:07,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 31 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:07,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:18:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 40 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 18:18:08,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:08,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007279413] [2023-12-16 18:18:08,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007279413] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:18:08,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:18:08,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2023-12-16 18:18:08,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649063783] [2023-12-16 18:18:08,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:18:08,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 18:18:08,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:08,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 18:18:08,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-12-16 18:18:08,110 INFO L87 Difference]: Start difference. First operand 12410 states and 13775 transitions. Second operand has 21 states, 21 states have (on average 10.0) internal successors, (210), 21 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:09,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 18:18:09,308 INFO L93 Difference]: Finished difference Result 22251 states and 24862 transitions. [2023-12-16 18:18:09,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-16 18:18:09,308 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.0) internal successors, (210), 21 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-16 18:18:09,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 18:18:09,321 INFO L225 Difference]: With dead ends: 22251 [2023-12-16 18:18:09,321 INFO L226 Difference]: Without dead ends: 17224 [2023-12-16 18:18:09,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=454, Invalid=1996, Unknown=0, NotChecked=0, Total=2450 [2023-12-16 18:18:09,328 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 971 mSDsluCounter, 3060 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:09,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 3371 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 18:18:09,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17224 states. [2023-12-16 18:18:09,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17224 to 14368. [2023-12-16 18:18:09,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14368 states, 14367 states have (on average 1.1080949397925801) internal successors, (15920), 14367 states have internal predecessors, (15920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:09,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14368 states to 14368 states and 15920 transitions. [2023-12-16 18:18:09,494 INFO L78 Accepts]: Start accepts. Automaton has 14368 states and 15920 transitions. Word has length 114 [2023-12-16 18:18:09,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 18:18:09,494 INFO L495 AbstractCegarLoop]: Abstraction has 14368 states and 15920 transitions. [2023-12-16 18:18:09,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.0) internal successors, (210), 21 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 18:18:09,494 INFO L276 IsEmpty]: Start isEmpty. Operand 14368 states and 15920 transitions. [2023-12-16 18:18:09,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-16 18:18:09,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 18:18:09,497 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 18:18:09,500 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 18:18:09,700 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 18:18:09,701 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 18:18:09,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 18:18:09,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1183025586, now seen corresponding path program 1 times [2023-12-16 18:18:09,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 18:18:09,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674209079] [2023-12-16 18:18:09,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 18:18:09,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 18:18:09,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 18:18:09,703 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 18:18:09,732 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 18:18:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 18:18:09,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 18:18:09,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 18:18:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 53 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 18:18:10,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 18:18:10,820 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 62 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 18:18:10,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 18:18:10,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674209079] [2023-12-16 18:18:10,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674209079] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 18:18:10,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 18:18:10,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2023-12-16 18:18:10,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834968395] [2023-12-16 18:18:10,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 18:18:10,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 18:18:10,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 18:18:10,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 18:18:10,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-12-16 18:18:10,822 INFO L87 Difference]: Start difference. First operand 14368 states and 15920 transitions. Second operand has 23 states, 23 states have (on average 8.826086956521738) internal successors, (203), 23 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 18:18:11,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 18:18:11,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=348, Invalid=1292, Unknown=0, NotChecked=0, Total=1640 [2023-12-16 18:18:11,807 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 612 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 18:18:11,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 2082 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 18:18:11,808 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 18:18:11,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2023-12-16 18:18:11,835 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 18:18:11,835 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 (37)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 18:18:12,008 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 18:18:12,009 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (14368states) and FLOYD_HOARE automaton (currently 22 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 41 known predicates. [2023-12-16 18:18:12,023 INFO L445 BasicCegarLoop]: Path program histogram: [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] [2023-12-16 18:18:12,025 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 18:18:12,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:18:12 BoogieIcfgContainer [2023-12-16 18:18:12,028 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 18:18:12,028 INFO L158 Benchmark]: Toolchain (without parser) took 73815.83ms. Allocated memory was 285.2MB in the beginning and 5.7GB in the end (delta: 5.4GB). Free memory was 229.3MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 3.8GB. Max. memory is 8.0GB. [2023-12-16 18:18:12,029 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 237.0MB. Free memory was 182.1MB in the beginning and 181.9MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 18:18:12,029 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.99ms. Allocated memory is still 285.2MB. Free memory was 229.3MB in the beginning and 212.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-16 18:18:12,029 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.17ms. Allocated memory is still 285.2MB. Free memory was 212.5MB in the beginning and 210.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 18:18:12,029 INFO L158 Benchmark]: Boogie Preprocessor took 53.80ms. Allocated memory is still 285.2MB. Free memory was 210.4MB in the beginning and 207.3MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 18:18:12,029 INFO L158 Benchmark]: RCFGBuilder took 548.29ms. Allocated memory is still 285.2MB. Free memory was 207.3MB in the beginning and 181.1MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-16 18:18:12,029 INFO L158 Benchmark]: TraceAbstraction took 72932.86ms. Allocated memory was 285.2MB in the beginning and 5.7GB in the end (delta: 5.4GB). Free memory was 180.0MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 3.8GB. Max. memory is 8.0GB. [2023-12-16 18:18:12,030 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 237.0MB. Free memory was 182.1MB in the beginning and 181.9MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 225.99ms. Allocated memory is still 285.2MB. Free memory was 229.3MB in the beginning and 212.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.17ms. Allocated memory is still 285.2MB. Free memory was 212.5MB in the beginning and 210.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 53.80ms. Allocated memory is still 285.2MB. Free memory was 210.4MB in the beginning and 207.3MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 548.29ms. Allocated memory is still 285.2MB. Free memory was 207.3MB in the beginning and 181.1MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * TraceAbstraction took 72932.86ms. Allocated memory was 285.2MB in the beginning and 5.7GB in the end (delta: 5.4GB). Free memory was 180.0MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 3.8GB. 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: 212]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 212). Cancelled while NwaCegarLoop was constructing difference of abstraction (14368states) and FLOYD_HOARE automaton (currently 22 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 41 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 72.9s, OverallIterations: 36, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 42.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24651 SdHoareTripleChecker+Valid, 14.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24651 mSDsluCounter, 37108 SdHoareTripleChecker+Invalid, 13.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31224 mSDsCounter, 419 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15204 IncrementalHoareTripleChecker+Invalid, 15623 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 419 mSolverCounterUnsat, 5884 mSDtfsCounter, 15204 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4433 GetRequests, 3512 SyntacticMatches, 0 SemanticMatches, 920 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28085 ImplicationChecksByTransitivity, 26.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49011occurred in iteration=16, InterpolantAutomatonStates: 768, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.8s AutomataMinimizationTime, 35 MinimizatonAttempts, 233542 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 2442 NumberOfCodeBlocks, 2442 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 3686 ConstructedInterpolants, 763 QuantifiedInterpolants, 30818 SizeOfPredicates, 104 NumberOfNonLiveVariables, 5271 ConjunctsInSsa, 207 ConjunctsInUnsatCore, 51 InterpolantComputations, 21 PerfectInterpolantSequences, 878/1505 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