/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.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 09:39:17,557 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 09:39:17,622 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 09:39:17,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 09:39:17,627 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 09:39:17,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 09:39:17,648 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 09:39:17,648 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 09:39:17,649 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 09:39:17,651 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 09:39:17,652 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 09:39:17,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 09:39:17,652 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 09:39:17,653 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 09:39:17,653 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 09:39:17,654 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 09:39:17,654 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 09:39:17,654 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 09:39:17,655 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 09:39:17,655 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 09:39:17,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 09:39:17,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 09:39:17,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 09:39:17,656 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 09:39:17,656 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 09:39:17,656 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 09:39:17,656 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 09:39:17,656 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 09:39:17,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 09:39:17,657 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 09:39:17,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 09:39:17,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 09:39:17,657 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 09:39:17,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 09:39:17,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 09:39:17,658 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 09:39:17,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 09:39:17,658 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 09:39:17,658 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 09:39:17,658 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 09:39:17,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 09:39:17,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 09:39:17,659 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 09:39:17,659 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 09:39:17,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 09:39:17,659 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 09:39:17,659 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 09:39:17,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 09:39:17,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 09:39:17,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 09:39:17,851 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 09:39:17,852 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 09:39:17,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-25 09:39:18,851 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 09:39:19,053 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 09:39:19,053 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-25 09:39:19,061 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b67fc11fb/047156b0e80d4b66bdf0b0fb4436cb5c/FLAGa84a448f1 [2023-12-25 09:39:19,080 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b67fc11fb/047156b0e80d4b66bdf0b0fb4436cb5c [2023-12-25 09:39:19,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 09:39:19,083 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 09:39:19,085 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 09:39:19,085 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 09:39:19,089 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 09:39:19,089 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:39:19" (1/1) ... [2023-12-25 09:39:19,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@470d38ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:39:19, skipping insertion in model container [2023-12-25 09:39:19,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:39:19" (1/1) ... [2023-12-25 09:39:19,134 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 09:39:19,293 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.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7107,7120] [2023-12-25 09:39:19,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 09:39:19,345 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 09:39:19,384 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.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7107,7120] [2023-12-25 09:39:19,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 09:39:19,425 INFO L206 MainTranslator]: Completed translation [2023-12-25 09:39:19,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:39:19 WrapperNode [2023-12-25 09:39:19,426 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 09:39:19,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 09:39:19,426 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 09:39:19,426 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 09:39:19,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:39:19" (1/1) ... [2023-12-25 09:39:19,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:39:19" (1/1) ... [2023-12-25 09:39:19,467 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 675 [2023-12-25 09:39:19,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 09:39:19,468 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 09:39:19,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 09:39:19,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 09:39:19,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:39:19" (1/1) ... [2023-12-25 09:39:19,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:39:19" (1/1) ... [2023-12-25 09:39:19,482 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:39:19" (1/1) ... [2023-12-25 09:39:19,494 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]. [2023-12-25 09:39:19,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:39:19" (1/1) ... [2023-12-25 09:39:19,494 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:39:19" (1/1) ... [2023-12-25 09:39:19,502 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:39:19" (1/1) ... [2023-12-25 09:39:19,505 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:39:19" (1/1) ... [2023-12-25 09:39:19,507 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:39:19" (1/1) ... [2023-12-25 09:39:19,509 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:39:19" (1/1) ... [2023-12-25 09:39:19,512 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 09:39:19,513 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 09:39:19,513 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 09:39:19,513 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 09:39:19,513 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:39:19" (1/1) ... [2023-12-25 09:39:19,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 09:39:19,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 09:39:19,551 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) [2023-12-25 09:39:19,578 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 [2023-12-25 09:39:19,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 09:39:19,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 09:39:19,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 09:39:19,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 09:39:19,689 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 09:39:19,691 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 09:39:20,154 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 09:39:20,188 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 09:39:20,188 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 09:39:20,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:39:20 BoogieIcfgContainer [2023-12-25 09:39:20,188 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 09:39:20,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 09:39:20,190 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 09:39:20,192 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 09:39:20,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 09:39:19" (1/3) ... [2023-12-25 09:39:20,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7440d88a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:39:20, skipping insertion in model container [2023-12-25 09:39:20,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:39:19" (2/3) ... [2023-12-25 09:39:20,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7440d88a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:39:20, skipping insertion in model container [2023-12-25 09:39:20,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:39:20" (3/3) ... [2023-12-25 09:39:20,196 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-25 09:39:20,208 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 09:39:20,208 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 09:39:20,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 09:39:20,258 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;@5292783b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 09:39:20,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 09:39:20,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 168 states, 166 states have (on average 1.7289156626506024) internal successors, (287), 167 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:20,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-25 09:39:20,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:20,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:20,272 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:20,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:20,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1574066593, now seen corresponding path program 1 times [2023-12-25 09:39:20,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:20,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790277978] [2023-12-25 09:39:20,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:20,286 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 [2023-12-25 09:39:20,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:20,287 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) [2023-12-25 09:39:20,296 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 [2023-12-25 09:39:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:20,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 09:39:20,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:20,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:20,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:20,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790277978] [2023-12-25 09:39:20,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790277978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:20,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:20,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 09:39:20,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920418162] [2023-12-25 09:39:20,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:20,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 09:39:20,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:20,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 09:39:20,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:20,643 INFO L87 Difference]: Start difference. First operand has 168 states, 166 states have (on average 1.7289156626506024) internal successors, (287), 167 states have internal predecessors, (287), 0 states have call successors, (0), 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 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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) [2023-12-25 09:39:20,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:20,861 INFO L93 Difference]: Finished difference Result 577 states and 956 transitions. [2023-12-25 09:39:20,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 09:39:20,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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 [2023-12-25 09:39:20,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:20,880 INFO L225 Difference]: With dead ends: 577 [2023-12-25 09:39:20,880 INFO L226 Difference]: Without dead ends: 456 [2023-12-25 09:39:20,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:20,885 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 894 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:20,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 1193 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:39:20,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-12-25 09:39:20,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 450. [2023-12-25 09:39:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.510022271714922) internal successors, (678), 449 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:20,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 678 transitions. [2023-12-25 09:39:20,923 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 678 transitions. Word has length 62 [2023-12-25 09:39:20,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:20,924 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 678 transitions. [2023-12-25 09:39:20,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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) [2023-12-25 09:39:20,924 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 678 transitions. [2023-12-25 09:39:20,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-25 09:39:20,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:20,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:20,931 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 [2023-12-25 09:39:21,128 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 [2023-12-25 09:39:21,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:21,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:21,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1316703024, now seen corresponding path program 1 times [2023-12-25 09:39:21,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:21,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148771350] [2023-12-25 09:39:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:21,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:39:21,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:21,132 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) [2023-12-25 09:39:21,145 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 [2023-12-25 09:39:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:21,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:39:21,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:21,487 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:21,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:21,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148771350] [2023-12-25 09:39:21,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148771350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:21,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:21,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:39:21,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847123638] [2023-12-25 09:39:21,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:21,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:39:21,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:21,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:39:21,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:39:21,489 INFO L87 Difference]: Start difference. First operand 450 states and 678 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 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) [2023-12-25 09:39:21,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:21,712 INFO L93 Difference]: Finished difference Result 1135 states and 1747 transitions. [2023-12-25 09:39:21,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:39:21,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 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 63 [2023-12-25 09:39:21,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:21,715 INFO L225 Difference]: With dead ends: 1135 [2023-12-25 09:39:21,715 INFO L226 Difference]: Without dead ends: 730 [2023-12-25 09:39:21,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:21,717 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 572 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:21,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 233 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:39:21,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-12-25 09:39:21,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 728. [2023-12-25 09:39:21,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 727 states have (on average 1.530949105914718) internal successors, (1113), 727 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:21,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1113 transitions. [2023-12-25 09:39:21,745 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1113 transitions. Word has length 63 [2023-12-25 09:39:21,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:21,746 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1113 transitions. [2023-12-25 09:39:21,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 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) [2023-12-25 09:39:21,746 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1113 transitions. [2023-12-25 09:39:21,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-25 09:39:21,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:21,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:21,757 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 [2023-12-25 09:39:21,957 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 [2023-12-25 09:39:21,957 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:21,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:21,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1965572338, now seen corresponding path program 1 times [2023-12-25 09:39:21,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:21,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467448664] [2023-12-25 09:39:21,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:21,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:39:21,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:21,959 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) [2023-12-25 09:39:21,981 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 [2023-12-25 09:39:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:22,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:39:22,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:22,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:22,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:22,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467448664] [2023-12-25 09:39:22,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467448664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:22,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:22,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:39:22,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603876812] [2023-12-25 09:39:22,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:22,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:39:22,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:22,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:39:22,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:39:22,183 INFO L87 Difference]: Start difference. First operand 728 states and 1113 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 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) [2023-12-25 09:39:22,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:22,377 INFO L93 Difference]: Finished difference Result 1858 states and 2893 transitions. [2023-12-25 09:39:22,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:39:22,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 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 63 [2023-12-25 09:39:22,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:22,381 INFO L225 Difference]: With dead ends: 1858 [2023-12-25 09:39:22,381 INFO L226 Difference]: Without dead ends: 1225 [2023-12-25 09:39:22,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:22,384 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 846 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:22,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 239 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:39:22,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2023-12-25 09:39:22,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1223. [2023-12-25 09:39:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1222 states have (on average 1.5450081833060556) internal successors, (1888), 1222 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1888 transitions. [2023-12-25 09:39:22,401 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1888 transitions. Word has length 63 [2023-12-25 09:39:22,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:22,401 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1888 transitions. [2023-12-25 09:39:22,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 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) [2023-12-25 09:39:22,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1888 transitions. [2023-12-25 09:39:22,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-25 09:39:22,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:22,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:22,408 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 [2023-12-25 09:39:22,607 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 [2023-12-25 09:39:22,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:22,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:22,608 INFO L85 PathProgramCache]: Analyzing trace with hash 916139007, now seen corresponding path program 1 times [2023-12-25 09:39:22,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:22,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231629106] [2023-12-25 09:39:22,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:22,609 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 [2023-12-25 09:39:22,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:22,610 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) [2023-12-25 09:39:22,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-25 09:39:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:22,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:39:22,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:22,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:22,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:22,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231629106] [2023-12-25 09:39:22,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231629106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:22,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:22,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:39:22,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783409991] [2023-12-25 09:39:22,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:22,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:39:22,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:22,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:39:22,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:39:22,855 INFO L87 Difference]: Start difference. First operand 1223 states and 1888 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 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) [2023-12-25 09:39:23,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:23,049 INFO L93 Difference]: Finished difference Result 3392 states and 5293 transitions. [2023-12-25 09:39:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:39:23,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 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 63 [2023-12-25 09:39:23,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:23,055 INFO L225 Difference]: With dead ends: 3392 [2023-12-25 09:39:23,055 INFO L226 Difference]: Without dead ends: 2237 [2023-12-25 09:39:23,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:23,057 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 678 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:23,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 235 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:39:23,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2023-12-25 09:39:23,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 2235. [2023-12-25 09:39:23,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 2234 states have (on average 1.5505819158460161) internal successors, (3464), 2234 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:23,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 3464 transitions. [2023-12-25 09:39:23,088 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 3464 transitions. Word has length 63 [2023-12-25 09:39:23,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:23,089 INFO L495 AbstractCegarLoop]: Abstraction has 2235 states and 3464 transitions. [2023-12-25 09:39:23,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 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) [2023-12-25 09:39:23,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 3464 transitions. [2023-12-25 09:39:23,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-25 09:39:23,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:23,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:23,095 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 [2023-12-25 09:39:23,292 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 [2023-12-25 09:39:23,293 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:23,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:23,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1404229037, now seen corresponding path program 1 times [2023-12-25 09:39:23,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:23,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174332031] [2023-12-25 09:39:23,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:23,294 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 [2023-12-25 09:39:23,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:23,295 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) [2023-12-25 09:39:23,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-25 09:39:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:23,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 09:39:23,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:23,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:23,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:23,748 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:23,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174332031] [2023-12-25 09:39:23,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174332031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:23,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:23,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 09:39:23,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783468876] [2023-12-25 09:39:23,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:23,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 09:39:23,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:23,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 09:39:23,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-25 09:39:23,750 INFO L87 Difference]: Start difference. First operand 2235 states and 3464 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 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) [2023-12-25 09:39:24,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:24,942 INFO L93 Difference]: Finished difference Result 4968 states and 7735 transitions. [2023-12-25 09:39:24,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 09:39:24,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 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 [2023-12-25 09:39:24,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:24,951 INFO L225 Difference]: With dead ends: 4968 [2023-12-25 09:39:24,951 INFO L226 Difference]: Without dead ends: 3650 [2023-12-25 09:39:24,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-12-25 09:39:24,954 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1710 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:24,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1710 Valid, 1030 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 09:39:24,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2023-12-25 09:39:24,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 2301. [2023-12-25 09:39:24,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 2300 states have (on average 1.5443478260869565) internal successors, (3552), 2300 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:24,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 3552 transitions. [2023-12-25 09:39:24,994 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 3552 transitions. Word has length 64 [2023-12-25 09:39:24,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:24,995 INFO L495 AbstractCegarLoop]: Abstraction has 2301 states and 3552 transitions. [2023-12-25 09:39:24,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 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) [2023-12-25 09:39:24,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 3552 transitions. [2023-12-25 09:39:24,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-25 09:39:24,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:24,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:25,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-25 09:39:25,198 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 [2023-12-25 09:39:25,198 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:25,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:25,199 INFO L85 PathProgramCache]: Analyzing trace with hash 142391827, now seen corresponding path program 1 times [2023-12-25 09:39:25,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:25,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078786431] [2023-12-25 09:39:25,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:25,199 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 [2023-12-25 09:39:25,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:25,200 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) [2023-12-25 09:39:25,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-25 09:39:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:25,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 09:39:25,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:25,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:25,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:25,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078786431] [2023-12-25 09:39:25,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078786431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:25,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:25,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 09:39:25,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957895556] [2023-12-25 09:39:25,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:25,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 09:39:25,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:25,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 09:39:25,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-25 09:39:25,525 INFO L87 Difference]: Start difference. First operand 2301 states and 3552 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 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) [2023-12-25 09:39:26,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:26,584 INFO L93 Difference]: Finished difference Result 2937 states and 4527 transitions. [2023-12-25 09:39:26,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 09:39:26,584 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 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 [2023-12-25 09:39:26,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:26,590 INFO L225 Difference]: With dead ends: 2937 [2023-12-25 09:39:26,590 INFO L226 Difference]: Without dead ends: 2601 [2023-12-25 09:39:26,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-12-25 09:39:26,591 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 1185 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:26,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 987 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 09:39:26,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2023-12-25 09:39:26,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 2301. [2023-12-25 09:39:26,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 2300 states have (on average 1.5434782608695652) internal successors, (3550), 2300 states have internal predecessors, (3550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:26,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 3550 transitions. [2023-12-25 09:39:26,618 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 3550 transitions. Word has length 64 [2023-12-25 09:39:26,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:26,618 INFO L495 AbstractCegarLoop]: Abstraction has 2301 states and 3550 transitions. [2023-12-25 09:39:26,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 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) [2023-12-25 09:39:26,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 3550 transitions. [2023-12-25 09:39:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-25 09:39:26,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:26,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:26,624 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 [2023-12-25 09:39:26,821 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 [2023-12-25 09:39:26,823 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:26,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:26,823 INFO L85 PathProgramCache]: Analyzing trace with hash -61911501, now seen corresponding path program 1 times [2023-12-25 09:39:26,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:26,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014229224] [2023-12-25 09:39:26,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:26,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:39:26,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:26,825 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) [2023-12-25 09:39:26,825 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 [2023-12-25 09:39:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:26,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 09:39:26,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:27,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:27,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:27,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014229224] [2023-12-25 09:39:27,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014229224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:27,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:27,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 09:39:27,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256047312] [2023-12-25 09:39:27,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:27,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 09:39:27,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:27,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 09:39:27,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-25 09:39:27,268 INFO L87 Difference]: Start difference. First operand 2301 states and 3550 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 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) [2023-12-25 09:39:28,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:28,441 INFO L93 Difference]: Finished difference Result 4028 states and 6225 transitions. [2023-12-25 09:39:28,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 09:39:28,441 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 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 [2023-12-25 09:39:28,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:28,449 INFO L225 Difference]: With dead ends: 4028 [2023-12-25 09:39:28,450 INFO L226 Difference]: Without dead ends: 3216 [2023-12-25 09:39:28,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-12-25 09:39:28,454 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 1189 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:28,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 1060 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 09:39:28,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2023-12-25 09:39:28,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 2386. [2023-12-25 09:39:28,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2386 states, 2385 states have (on average 1.5358490566037737) internal successors, (3663), 2385 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:28,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 3663 transitions. [2023-12-25 09:39:28,490 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 3663 transitions. Word has length 64 [2023-12-25 09:39:28,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:28,490 INFO L495 AbstractCegarLoop]: Abstraction has 2386 states and 3663 transitions. [2023-12-25 09:39:28,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 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) [2023-12-25 09:39:28,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 3663 transitions. [2023-12-25 09:39:28,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-25 09:39:28,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:28,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:28,496 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 [2023-12-25 09:39:28,694 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 [2023-12-25 09:39:28,695 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:28,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:28,696 INFO L85 PathProgramCache]: Analyzing trace with hash -359353295, now seen corresponding path program 1 times [2023-12-25 09:39:28,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:28,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567612071] [2023-12-25 09:39:28,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:28,696 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 [2023-12-25 09:39:28,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:28,697 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) [2023-12-25 09:39:28,698 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 [2023-12-25 09:39:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:28,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:39:28,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:28,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:28,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:28,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567612071] [2023-12-25 09:39:28,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567612071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:28,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:28,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:39:28,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225708767] [2023-12-25 09:39:28,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:28,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:39:28,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:28,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:39:28,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:39:28,915 INFO L87 Difference]: Start difference. First operand 2386 states and 3663 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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) [2023-12-25 09:39:29,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:29,104 INFO L93 Difference]: Finished difference Result 6422 states and 9922 transitions. [2023-12-25 09:39:29,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:39:29,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 [2023-12-25 09:39:29,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:29,113 INFO L225 Difference]: With dead ends: 6422 [2023-12-25 09:39:29,113 INFO L226 Difference]: Without dead ends: 4083 [2023-12-25 09:39:29,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:29,116 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 936 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:29,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 238 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:39:29,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4083 states. [2023-12-25 09:39:29,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4083 to 4081. [2023-12-25 09:39:29,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4081 states, 4080 states have (on average 1.5387254901960785) internal successors, (6278), 4080 states have internal predecessors, (6278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:29,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4081 states to 4081 states and 6278 transitions. [2023-12-25 09:39:29,156 INFO L78 Accepts]: Start accepts. Automaton has 4081 states and 6278 transitions. Word has length 64 [2023-12-25 09:39:29,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:29,156 INFO L495 AbstractCegarLoop]: Abstraction has 4081 states and 6278 transitions. [2023-12-25 09:39:29,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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) [2023-12-25 09:39:29,157 INFO L276 IsEmpty]: Start isEmpty. Operand 4081 states and 6278 transitions. [2023-12-25 09:39:29,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-25 09:39:29,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:29,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:29,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-25 09:39:29,360 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 [2023-12-25 09:39:29,361 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:29,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:29,361 INFO L85 PathProgramCache]: Analyzing trace with hash 587870286, now seen corresponding path program 1 times [2023-12-25 09:39:29,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:29,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993121293] [2023-12-25 09:39:29,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:29,362 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 [2023-12-25 09:39:29,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:29,362 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) [2023-12-25 09:39:29,365 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 [2023-12-25 09:39:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:29,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 09:39:29,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:29,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:29,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:29,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993121293] [2023-12-25 09:39:29,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993121293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:29,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:29,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 09:39:29,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256838807] [2023-12-25 09:39:29,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:29,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 09:39:29,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:29,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 09:39:29,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:29,803 INFO L87 Difference]: Start difference. First operand 4081 states and 6278 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:29,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:29,904 INFO L93 Difference]: Finished difference Result 17732 states and 27559 transitions. [2023-12-25 09:39:29,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 09:39:29,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-25 09:39:29,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:29,935 INFO L225 Difference]: With dead ends: 17732 [2023-12-25 09:39:29,935 INFO L226 Difference]: Without dead ends: 14258 [2023-12-25 09:39:29,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:29,945 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 692 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:29,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 899 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:39:29,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14258 states. [2023-12-25 09:39:30,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14258 to 7869. [2023-12-25 09:39:30,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7869 states, 7868 states have (on average 1.5320284697508897) internal successors, (12054), 7868 states have internal predecessors, (12054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:30,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7869 states to 7869 states and 12054 transitions. [2023-12-25 09:39:30,065 INFO L78 Accepts]: Start accepts. Automaton has 7869 states and 12054 transitions. Word has length 65 [2023-12-25 09:39:30,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:30,066 INFO L495 AbstractCegarLoop]: Abstraction has 7869 states and 12054 transitions. [2023-12-25 09:39:30,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:30,066 INFO L276 IsEmpty]: Start isEmpty. Operand 7869 states and 12054 transitions. [2023-12-25 09:39:30,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-25 09:39:30,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:30,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:30,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-25 09:39:30,270 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 [2023-12-25 09:39:30,270 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:30,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:30,271 INFO L85 PathProgramCache]: Analyzing trace with hash 781767457, now seen corresponding path program 1 times [2023-12-25 09:39:30,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:30,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035260344] [2023-12-25 09:39:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:30,271 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 [2023-12-25 09:39:30,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:30,272 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) [2023-12-25 09:39:30,273 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 [2023-12-25 09:39:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:30,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 09:39:30,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:30,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:30,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:30,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:30,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035260344] [2023-12-25 09:39:30,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035260344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:30,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:30,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:39:30,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992753169] [2023-12-25 09:39:30,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:30,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:39:30,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:30,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:39:30,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:39:30,360 INFO L87 Difference]: Start difference. First operand 7869 states and 12054 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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) [2023-12-25 09:39:30,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:30,414 INFO L93 Difference]: Finished difference Result 15039 states and 23055 transitions. [2023-12-25 09:39:30,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:39:30,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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 66 [2023-12-25 09:39:30,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:30,442 INFO L225 Difference]: With dead ends: 15039 [2023-12-25 09:39:30,442 INFO L226 Difference]: Without dead ends: 15037 [2023-12-25 09:39:30,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:39:30,448 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 230 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:30,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 697 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:39:30,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2023-12-25 09:39:30,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 8093. [2023-12-25 09:39:30,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8093 states, 8092 states have (on average 1.5173010380622838) internal successors, (12278), 8092 states have internal predecessors, (12278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:30,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8093 states to 8093 states and 12278 transitions. [2023-12-25 09:39:30,606 INFO L78 Accepts]: Start accepts. Automaton has 8093 states and 12278 transitions. Word has length 66 [2023-12-25 09:39:30,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:30,606 INFO L495 AbstractCegarLoop]: Abstraction has 8093 states and 12278 transitions. [2023-12-25 09:39:30,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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) [2023-12-25 09:39:30,607 INFO L276 IsEmpty]: Start isEmpty. Operand 8093 states and 12278 transitions. [2023-12-25 09:39:30,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-25 09:39:30,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:30,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:30,622 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 [2023-12-25 09:39:30,814 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 [2023-12-25 09:39:30,814 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:30,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:30,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1273718427, now seen corresponding path program 1 times [2023-12-25 09:39:30,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:30,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630251801] [2023-12-25 09:39:30,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:30,815 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 [2023-12-25 09:39:30,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:30,816 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) [2023-12-25 09:39:30,819 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 (12)] Waiting until timeout for monitored process [2023-12-25 09:39:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:30,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:39:30,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:30,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:30,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:30,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630251801] [2023-12-25 09:39:30,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630251801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:30,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:30,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:39:30,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118395352] [2023-12-25 09:39:30,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:30,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:39:30,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:30,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:39:30,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:39:30,957 INFO L87 Difference]: Start difference. First operand 8093 states and 12278 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:31,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:31,011 INFO L93 Difference]: Finished difference Result 21233 states and 32296 transitions. [2023-12-25 09:39:31,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:39:31,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-25 09:39:31,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:31,034 INFO L225 Difference]: With dead ends: 21233 [2023-12-25 09:39:31,034 INFO L226 Difference]: Without dead ends: 14063 [2023-12-25 09:39:31,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:39:31,044 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 158 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:31,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 569 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:39:31,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14063 states. [2023-12-25 09:39:31,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14063 to 13957. [2023-12-25 09:39:31,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13957 states, 13956 states have (on average 1.503439380911436) internal successors, (20982), 13956 states have internal predecessors, (20982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:31,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13957 states to 13957 states and 20982 transitions. [2023-12-25 09:39:31,193 INFO L78 Accepts]: Start accepts. Automaton has 13957 states and 20982 transitions. Word has length 67 [2023-12-25 09:39:31,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:31,193 INFO L495 AbstractCegarLoop]: Abstraction has 13957 states and 20982 transitions. [2023-12-25 09:39:31,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:31,193 INFO L276 IsEmpty]: Start isEmpty. Operand 13957 states and 20982 transitions. [2023-12-25 09:39:31,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-25 09:39:31,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:31,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:31,199 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 [2023-12-25 09:39:31,396 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 [2023-12-25 09:39:31,397 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:31,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:31,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1507383957, now seen corresponding path program 1 times [2023-12-25 09:39:31,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:31,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859181572] [2023-12-25 09:39:31,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:31,397 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 [2023-12-25 09:39:31,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:31,398 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) [2023-12-25 09:39:31,399 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 [2023-12-25 09:39:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:31,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:39:31,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:31,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:31,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:31,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859181572] [2023-12-25 09:39:31,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859181572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:31,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:31,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:39:31,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529690057] [2023-12-25 09:39:31,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:31,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:39:31,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:31,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:39:31,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:39:31,506 INFO L87 Difference]: Start difference. First operand 13957 states and 20982 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:31,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:31,614 INFO L93 Difference]: Finished difference Result 25361 states and 38159 transitions. [2023-12-25 09:39:31,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:39:31,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-25 09:39:31,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:31,637 INFO L225 Difference]: With dead ends: 25361 [2023-12-25 09:39:31,638 INFO L226 Difference]: Without dead ends: 17035 [2023-12-25 09:39:31,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:39:31,646 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 148 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:31,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 452 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:39:31,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17035 states. [2023-12-25 09:39:31,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17035 to 16817. [2023-12-25 09:39:31,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16817 states, 16816 states have (on average 1.4811489058039962) internal successors, (24907), 16816 states have internal predecessors, (24907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:31,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16817 states to 16817 states and 24907 transitions. [2023-12-25 09:39:31,821 INFO L78 Accepts]: Start accepts. Automaton has 16817 states and 24907 transitions. Word has length 67 [2023-12-25 09:39:31,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:31,821 INFO L495 AbstractCegarLoop]: Abstraction has 16817 states and 24907 transitions. [2023-12-25 09:39:31,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:31,821 INFO L276 IsEmpty]: Start isEmpty. Operand 16817 states and 24907 transitions. [2023-12-25 09:39:31,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-25 09:39:31,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:31,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:31,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-25 09:39:32,036 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 [2023-12-25 09:39:32,037 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:32,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:32,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1111780341, now seen corresponding path program 1 times [2023-12-25 09:39:32,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:32,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976078921] [2023-12-25 09:39:32,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:32,038 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 [2023-12-25 09:39:32,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:32,039 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) [2023-12-25 09:39:32,042 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 [2023-12-25 09:39:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:32,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:39:32,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:32,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:32,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:32,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976078921] [2023-12-25 09:39:32,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976078921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:32,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:32,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:39:32,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113799241] [2023-12-25 09:39:32,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:32,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:39:32,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:32,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:39:32,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:39:32,124 INFO L87 Difference]: Start difference. First operand 16817 states and 24907 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:32,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:32,203 INFO L93 Difference]: Finished difference Result 37670 states and 55841 transitions. [2023-12-25 09:39:32,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:39:32,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-25 09:39:32,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:32,230 INFO L225 Difference]: With dead ends: 37670 [2023-12-25 09:39:32,231 INFO L226 Difference]: Without dead ends: 23114 [2023-12-25 09:39:32,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:39:32,248 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 163 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:32,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 450 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:39:32,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23114 states. [2023-12-25 09:39:32,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23114 to 16686. [2023-12-25 09:39:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16686 states, 16685 states have (on average 1.4625711717111178) internal successors, (24403), 16685 states have internal predecessors, (24403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16686 states to 16686 states and 24403 transitions. [2023-12-25 09:39:32,563 INFO L78 Accepts]: Start accepts. Automaton has 16686 states and 24403 transitions. Word has length 67 [2023-12-25 09:39:32,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:32,563 INFO L495 AbstractCegarLoop]: Abstraction has 16686 states and 24403 transitions. [2023-12-25 09:39:32,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:32,564 INFO L276 IsEmpty]: Start isEmpty. Operand 16686 states and 24403 transitions. [2023-12-25 09:39:32,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-25 09:39:32,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:32,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:32,576 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 [2023-12-25 09:39:32,768 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 [2023-12-25 09:39:32,768 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:32,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:32,769 INFO L85 PathProgramCache]: Analyzing trace with hash -5065132, now seen corresponding path program 1 times [2023-12-25 09:39:32,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:32,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512647521] [2023-12-25 09:39:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:32,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:39:32,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:32,771 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) [2023-12-25 09:39:32,772 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 [2023-12-25 09:39:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:32,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:39:32,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:32,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:32,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:32,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512647521] [2023-12-25 09:39:32,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512647521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:32,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:32,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:39:32,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532779163] [2023-12-25 09:39:32,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:32,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:39:32,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:32,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:39:32,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:39:32,872 INFO L87 Difference]: Start difference. First operand 16686 states and 24403 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:32,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:32,923 INFO L93 Difference]: Finished difference Result 22882 states and 33320 transitions. [2023-12-25 09:39:32,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:39:32,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-25 09:39:32,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:32,939 INFO L225 Difference]: With dead ends: 22882 [2023-12-25 09:39:32,940 INFO L226 Difference]: Without dead ends: 17040 [2023-12-25 09:39:32,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:39:32,949 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 135 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:32,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 434 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:39:32,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17040 states. [2023-12-25 09:39:33,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17040 to 15374. [2023-12-25 09:39:33,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15374 states, 15373 states have (on average 1.4325765953294738) internal successors, (22023), 15373 states have internal predecessors, (22023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:33,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15374 states to 15374 states and 22023 transitions. [2023-12-25 09:39:33,187 INFO L78 Accepts]: Start accepts. Automaton has 15374 states and 22023 transitions. Word has length 67 [2023-12-25 09:39:33,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:33,187 INFO L495 AbstractCegarLoop]: Abstraction has 15374 states and 22023 transitions. [2023-12-25 09:39:33,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:33,188 INFO L276 IsEmpty]: Start isEmpty. Operand 15374 states and 22023 transitions. [2023-12-25 09:39:33,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-25 09:39:33,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:33,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:33,200 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 [2023-12-25 09:39:33,390 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 [2023-12-25 09:39:33,390 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:33,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:33,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1345977939, now seen corresponding path program 1 times [2023-12-25 09:39:33,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:33,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034207196] [2023-12-25 09:39:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:33,391 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 [2023-12-25 09:39:33,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:33,437 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) [2023-12-25 09:39:33,438 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 [2023-12-25 09:39:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:33,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 09:39:33,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:33,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:33,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:33,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034207196] [2023-12-25 09:39:33,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034207196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:33,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:33,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 09:39:33,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399459361] [2023-12-25 09:39:33,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:33,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 09:39:33,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:33,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 09:39:33,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:33,626 INFO L87 Difference]: Start difference. First operand 15374 states and 22023 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:34,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:34,051 INFO L93 Difference]: Finished difference Result 76265 states and 109275 transitions. [2023-12-25 09:39:34,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 09:39:34,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-12-25 09:39:34,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:34,124 INFO L225 Difference]: With dead ends: 76265 [2023-12-25 09:39:34,124 INFO L226 Difference]: Without dead ends: 61678 [2023-12-25 09:39:34,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-25 09:39:34,145 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 1622 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:34,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 501 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:39:34,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61678 states. [2023-12-25 09:39:34,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61678 to 15243. [2023-12-25 09:39:34,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15243 states, 15242 states have (on average 1.4263220049862222) internal successors, (21740), 15242 states have internal predecessors, (21740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:34,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15243 states to 15243 states and 21740 transitions. [2023-12-25 09:39:34,651 INFO L78 Accepts]: Start accepts. Automaton has 15243 states and 21740 transitions. Word has length 68 [2023-12-25 09:39:34,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:34,651 INFO L495 AbstractCegarLoop]: Abstraction has 15243 states and 21740 transitions. [2023-12-25 09:39:34,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:34,651 INFO L276 IsEmpty]: Start isEmpty. Operand 15243 states and 21740 transitions. [2023-12-25 09:39:34,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-25 09:39:34,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:34,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:34,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-25 09:39:34,858 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 [2023-12-25 09:39:34,858 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:34,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:34,859 INFO L85 PathProgramCache]: Analyzing trace with hash -337734033, now seen corresponding path program 1 times [2023-12-25 09:39:34,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:34,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844932933] [2023-12-25 09:39:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:34,859 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:39:34,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:34,860 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) [2023-12-25 09:39:34,862 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 [2023-12-25 09:39:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:34,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 09:39:34,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:35,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:35,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:35,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:35,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844932933] [2023-12-25 09:39:35,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844932933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:35,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:35,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 09:39:35,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804164621] [2023-12-25 09:39:35,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:35,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 09:39:35,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:35,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 09:39:35,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:35,045 INFO L87 Difference]: Start difference. First operand 15243 states and 21740 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:35,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:35,422 INFO L93 Difference]: Finished difference Result 69508 states and 98505 transitions. [2023-12-25 09:39:35,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 09:39:35,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-12-25 09:39:35,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:35,488 INFO L225 Difference]: With dead ends: 69508 [2023-12-25 09:39:35,489 INFO L226 Difference]: Without dead ends: 55206 [2023-12-25 09:39:35,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-25 09:39:35,592 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 1499 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:35,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 519 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:39:35,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55206 states. [2023-12-25 09:39:35,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55206 to 15485. [2023-12-25 09:39:35,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15485 states, 15484 states have (on average 1.411715319039008) internal successors, (21859), 15484 states have internal predecessors, (21859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:35,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15485 states to 15485 states and 21859 transitions. [2023-12-25 09:39:35,927 INFO L78 Accepts]: Start accepts. Automaton has 15485 states and 21859 transitions. Word has length 68 [2023-12-25 09:39:35,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:35,927 INFO L495 AbstractCegarLoop]: Abstraction has 15485 states and 21859 transitions. [2023-12-25 09:39:35,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:35,928 INFO L276 IsEmpty]: Start isEmpty. Operand 15485 states and 21859 transitions. [2023-12-25 09:39:35,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-25 09:39:35,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:35,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:35,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-25 09:39:36,134 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 [2023-12-25 09:39:36,134 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:36,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:36,134 INFO L85 PathProgramCache]: Analyzing trace with hash -533764226, now seen corresponding path program 1 times [2023-12-25 09:39:36,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:36,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224341789] [2023-12-25 09:39:36,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:36,135 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 [2023-12-25 09:39:36,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:36,136 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) [2023-12-25 09:39:36,136 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 [2023-12-25 09:39:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:36,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 09:39:36,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:36,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:36,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:36,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224341789] [2023-12-25 09:39:36,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224341789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:36,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:36,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 09:39:36,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050893859] [2023-12-25 09:39:36,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:36,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 09:39:36,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:36,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 09:39:36,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:36,320 INFO L87 Difference]: Start difference. First operand 15485 states and 21859 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:36,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:36,829 INFO L93 Difference]: Finished difference Result 89201 states and 125305 transitions. [2023-12-25 09:39:36,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 09:39:36,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-12-25 09:39:36,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:36,911 INFO L225 Difference]: With dead ends: 89201 [2023-12-25 09:39:36,911 INFO L226 Difference]: Without dead ends: 74782 [2023-12-25 09:39:36,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-25 09:39:36,926 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 1190 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:36,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 593 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:39:37,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74782 states. [2023-12-25 09:39:37,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74782 to 15683. [2023-12-25 09:39:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15683 states, 15682 states have (on average 1.3847085830888917) internal successors, (21715), 15682 states have internal predecessors, (21715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:37,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15683 states to 15683 states and 21715 transitions. [2023-12-25 09:39:37,503 INFO L78 Accepts]: Start accepts. Automaton has 15683 states and 21715 transitions. Word has length 68 [2023-12-25 09:39:37,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:37,504 INFO L495 AbstractCegarLoop]: Abstraction has 15683 states and 21715 transitions. [2023-12-25 09:39:37,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:37,504 INFO L276 IsEmpty]: Start isEmpty. Operand 15683 states and 21715 transitions. [2023-12-25 09:39:37,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-25 09:39:37,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:37,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:37,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-25 09:39:37,709 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 [2023-12-25 09:39:37,710 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:37,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:37,710 INFO L85 PathProgramCache]: Analyzing trace with hash 125167748, now seen corresponding path program 1 times [2023-12-25 09:39:37,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:37,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426355425] [2023-12-25 09:39:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:37,710 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 [2023-12-25 09:39:37,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:37,711 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) [2023-12-25 09:39:37,712 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 [2023-12-25 09:39:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:37,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:39:37,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:37,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:37,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:37,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426355425] [2023-12-25 09:39:37,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426355425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:37,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:37,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:39:37,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091617761] [2023-12-25 09:39:37,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:37,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:39:37,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:37,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:39:37,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:39:37,799 INFO L87 Difference]: Start difference. First operand 15683 states and 21715 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:37,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:37,867 INFO L93 Difference]: Finished difference Result 29790 states and 41331 transitions. [2023-12-25 09:39:37,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:39:37,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-12-25 09:39:37,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:37,884 INFO L225 Difference]: With dead ends: 29790 [2023-12-25 09:39:37,884 INFO L226 Difference]: Without dead ends: 17096 [2023-12-25 09:39:37,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:39:37,895 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 148 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:37,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 503 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:39:37,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17096 states. [2023-12-25 09:39:38,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17096 to 16926. [2023-12-25 09:39:38,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16926 states, 16925 states have (on average 1.3523781388478582) internal successors, (22889), 16925 states have internal predecessors, (22889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:38,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16926 states to 16926 states and 22889 transitions. [2023-12-25 09:39:38,118 INFO L78 Accepts]: Start accepts. Automaton has 16926 states and 22889 transitions. Word has length 68 [2023-12-25 09:39:38,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:38,118 INFO L495 AbstractCegarLoop]: Abstraction has 16926 states and 22889 transitions. [2023-12-25 09:39:38,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:38,118 INFO L276 IsEmpty]: Start isEmpty. Operand 16926 states and 22889 transitions. [2023-12-25 09:39:38,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-25 09:39:38,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:38,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:38,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-25 09:39:38,323 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 [2023-12-25 09:39:38,323 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:38,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:38,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1790888741, now seen corresponding path program 1 times [2023-12-25 09:39:38,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:38,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074816917] [2023-12-25 09:39:38,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:38,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:39:38,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:38,325 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) [2023-12-25 09:39:38,328 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 [2023-12-25 09:39:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:38,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 09:39:38,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:38,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:38,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:38,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:38,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074816917] [2023-12-25 09:39:38,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074816917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:38,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:38,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 09:39:38,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359289578] [2023-12-25 09:39:38,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:38,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 09:39:38,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:38,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 09:39:38,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:38,502 INFO L87 Difference]: Start difference. First operand 16926 states and 22889 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:38,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:38,919 INFO L93 Difference]: Finished difference Result 66735 states and 90232 transitions. [2023-12-25 09:39:38,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 09:39:38,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-12-25 09:39:38,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:38,979 INFO L225 Difference]: With dead ends: 66735 [2023-12-25 09:39:38,979 INFO L226 Difference]: Without dead ends: 50996 [2023-12-25 09:39:38,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-25 09:39:38,994 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 956 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:38,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 438 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:39:39,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50996 states. [2023-12-25 09:39:39,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50996 to 16848. [2023-12-25 09:39:39,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16848 states, 16847 states have (on average 1.3373894461922005) internal successors, (22531), 16847 states have internal predecessors, (22531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:39,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16848 states to 16848 states and 22531 transitions. [2023-12-25 09:39:39,401 INFO L78 Accepts]: Start accepts. Automaton has 16848 states and 22531 transitions. Word has length 68 [2023-12-25 09:39:39,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:39,402 INFO L495 AbstractCegarLoop]: Abstraction has 16848 states and 22531 transitions. [2023-12-25 09:39:39,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:39,402 INFO L276 IsEmpty]: Start isEmpty. Operand 16848 states and 22531 transitions. [2023-12-25 09:39:39,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-25 09:39:39,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:39,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:39,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-25 09:39:39,605 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 [2023-12-25 09:39:39,605 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:39,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:39,606 INFO L85 PathProgramCache]: Analyzing trace with hash -758045582, now seen corresponding path program 1 times [2023-12-25 09:39:39,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:39,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875815675] [2023-12-25 09:39:39,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:39,606 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 [2023-12-25 09:39:39,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:39,607 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) [2023-12-25 09:39:39,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-25 09:39:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:39,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 09:39:39,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:39,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:39,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:39,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:39,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875815675] [2023-12-25 09:39:39,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875815675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:39,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:39,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 09:39:39,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901743939] [2023-12-25 09:39:39,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:39,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 09:39:39,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:39,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 09:39:39,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:39,957 INFO L87 Difference]: Start difference. First operand 16848 states and 22531 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:40,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:40,099 INFO L93 Difference]: Finished difference Result 32754 states and 44348 transitions. [2023-12-25 09:39:40,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 09:39:40,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 [2023-12-25 09:39:40,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:40,131 INFO L225 Difference]: With dead ends: 32754 [2023-12-25 09:39:40,131 INFO L226 Difference]: Without dead ends: 28072 [2023-12-25 09:39:40,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:40,144 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 627 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:40,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 942 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:39:40,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28072 states. [2023-12-25 09:39:40,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28072 to 20062. [2023-12-25 09:39:40,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20062 states, 20061 states have (on average 1.3356263396640247) internal successors, (26794), 20061 states have internal predecessors, (26794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:40,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20062 states to 20062 states and 26794 transitions. [2023-12-25 09:39:40,442 INFO L78 Accepts]: Start accepts. Automaton has 20062 states and 26794 transitions. Word has length 70 [2023-12-25 09:39:40,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:40,442 INFO L495 AbstractCegarLoop]: Abstraction has 20062 states and 26794 transitions. [2023-12-25 09:39:40,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:40,442 INFO L276 IsEmpty]: Start isEmpty. Operand 20062 states and 26794 transitions. [2023-12-25 09:39:40,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-25 09:39:40,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:40,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:40,448 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 [2023-12-25 09:39:40,647 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 [2023-12-25 09:39:40,648 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:40,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:40,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1754271555, now seen corresponding path program 1 times [2023-12-25 09:39:40,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:40,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432053163] [2023-12-25 09:39:40,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:40,648 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 [2023-12-25 09:39:40,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:40,649 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) [2023-12-25 09:39:40,650 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 [2023-12-25 09:39:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:40,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 09:39:40,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:41,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:41,033 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:41,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432053163] [2023-12-25 09:39:41,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432053163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:41,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:41,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 09:39:41,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991589134] [2023-12-25 09:39:41,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:41,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 09:39:41,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:41,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 09:39:41,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:41,037 INFO L87 Difference]: Start difference. First operand 20062 states and 26794 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:41,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:41,235 INFO L93 Difference]: Finished difference Result 31620 states and 42663 transitions. [2023-12-25 09:39:41,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 09:39:41,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 [2023-12-25 09:39:41,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:41,278 INFO L225 Difference]: With dead ends: 31620 [2023-12-25 09:39:41,278 INFO L226 Difference]: Without dead ends: 29444 [2023-12-25 09:39:41,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:41,288 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 626 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:41,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 946 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:39:41,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29444 states. [2023-12-25 09:39:41,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29444 to 21440. [2023-12-25 09:39:41,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21440 states, 21439 states have (on average 1.3347171043425532) internal successors, (28615), 21439 states have internal predecessors, (28615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21440 states to 21440 states and 28615 transitions. [2023-12-25 09:39:41,517 INFO L78 Accepts]: Start accepts. Automaton has 21440 states and 28615 transitions. Word has length 70 [2023-12-25 09:39:41,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:41,517 INFO L495 AbstractCegarLoop]: Abstraction has 21440 states and 28615 transitions. [2023-12-25 09:39:41,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 21440 states and 28615 transitions. [2023-12-25 09:39:41,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-25 09:39:41,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:41,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:41,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-12-25 09:39:41,720 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 [2023-12-25 09:39:41,721 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:41,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:41,721 INFO L85 PathProgramCache]: Analyzing trace with hash 133225457, now seen corresponding path program 1 times [2023-12-25 09:39:41,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:41,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252847514] [2023-12-25 09:39:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:41,721 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 [2023-12-25 09:39:41,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:41,722 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) [2023-12-25 09:39:41,723 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 [2023-12-25 09:39:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:41,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 09:39:41,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:42,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:42,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:42,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252847514] [2023-12-25 09:39:42,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252847514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:42,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:42,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 09:39:42,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570782066] [2023-12-25 09:39:42,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:42,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 09:39:42,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:42,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 09:39:42,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-25 09:39:42,292 INFO L87 Difference]: Start difference. First operand 21440 states and 28615 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:43,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:43,402 INFO L93 Difference]: Finished difference Result 61350 states and 82128 transitions. [2023-12-25 09:39:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 09:39:43,404 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 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 [2023-12-25 09:39:43,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:43,453 INFO L225 Difference]: With dead ends: 61350 [2023-12-25 09:39:43,453 INFO L226 Difference]: Without dead ends: 41300 [2023-12-25 09:39:43,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-12-25 09:39:43,478 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 1451 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:43,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 1096 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 09:39:43,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41300 states. [2023-12-25 09:39:43,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41300 to 21195. [2023-12-25 09:39:43,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21195 states, 21194 states have (on average 1.333773709540436) internal successors, (28268), 21194 states have internal predecessors, (28268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:43,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21195 states to 21195 states and 28268 transitions. [2023-12-25 09:39:43,830 INFO L78 Accepts]: Start accepts. Automaton has 21195 states and 28268 transitions. Word has length 70 [2023-12-25 09:39:43,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:43,830 INFO L495 AbstractCegarLoop]: Abstraction has 21195 states and 28268 transitions. [2023-12-25 09:39:43,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:43,831 INFO L276 IsEmpty]: Start isEmpty. Operand 21195 states and 28268 transitions. [2023-12-25 09:39:43,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-25 09:39:43,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:43,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:43,835 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 (23)] Ended with exit code 0 [2023-12-25 09:39:44,033 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 [2023-12-25 09:39:44,034 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:44,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:44,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1616408271, now seen corresponding path program 1 times [2023-12-25 09:39:44,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:44,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282947473] [2023-12-25 09:39:44,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:44,034 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 [2023-12-25 09:39:44,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:44,035 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) [2023-12-25 09:39:44,036 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 [2023-12-25 09:39:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:44,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 09:39:44,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:44,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:44,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:44,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:44,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282947473] [2023-12-25 09:39:44,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282947473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:44,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:44,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 09:39:44,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961289911] [2023-12-25 09:39:44,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:44,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 09:39:44,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:44,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 09:39:44,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:44,380 INFO L87 Difference]: Start difference. First operand 21195 states and 28268 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:44,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:44,498 INFO L93 Difference]: Finished difference Result 39094 states and 52822 transitions. [2023-12-25 09:39:44,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 09:39:44,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-25 09:39:44,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:44,528 INFO L225 Difference]: With dead ends: 39094 [2023-12-25 09:39:44,528 INFO L226 Difference]: Without dead ends: 31531 [2023-12-25 09:39:44,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:44,540 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 803 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:44,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 874 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:39:44,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31531 states. [2023-12-25 09:39:44,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31531 to 24605. [2023-12-25 09:39:44,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24605 states, 24604 states have (on average 1.3336449357827995) internal successors, (32813), 24604 states have internal predecessors, (32813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:44,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24605 states to 24605 states and 32813 transitions. [2023-12-25 09:39:44,871 INFO L78 Accepts]: Start accepts. Automaton has 24605 states and 32813 transitions. Word has length 71 [2023-12-25 09:39:44,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:44,872 INFO L495 AbstractCegarLoop]: Abstraction has 24605 states and 32813 transitions. [2023-12-25 09:39:44,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:44,872 INFO L276 IsEmpty]: Start isEmpty. Operand 24605 states and 32813 transitions. [2023-12-25 09:39:44,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-25 09:39:44,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:44,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:44,876 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 (24)] Ended with exit code 0 [2023-12-25 09:39:45,074 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 [2023-12-25 09:39:45,075 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:45,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:45,075 INFO L85 PathProgramCache]: Analyzing trace with hash -550083880, now seen corresponding path program 1 times [2023-12-25 09:39:45,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:45,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409124388] [2023-12-25 09:39:45,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:45,076 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:39:45,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:45,076 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) [2023-12-25 09:39:45,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-25 09:39:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:45,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 09:39:45,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:45,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:45,428 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:45,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409124388] [2023-12-25 09:39:45,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409124388] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:45,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:45,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 09:39:45,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712538313] [2023-12-25 09:39:45,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:45,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 09:39:45,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:45,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 09:39:45,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:45,429 INFO L87 Difference]: Start difference. First operand 24605 states and 32813 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:45,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:45,556 INFO L93 Difference]: Finished difference Result 44973 states and 60636 transitions. [2023-12-25 09:39:45,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 09:39:45,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-25 09:39:45,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:45,590 INFO L225 Difference]: With dead ends: 44973 [2023-12-25 09:39:45,590 INFO L226 Difference]: Without dead ends: 34077 [2023-12-25 09:39:45,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:39:45,605 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 640 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:45,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 914 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:39:45,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34077 states. [2023-12-25 09:39:45,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34077 to 25897. [2023-12-25 09:39:45,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25897 states, 25896 states have (on average 1.332213469261662) internal successors, (34499), 25896 states have internal predecessors, (34499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25897 states to 25897 states and 34499 transitions. [2023-12-25 09:39:45,905 INFO L78 Accepts]: Start accepts. Automaton has 25897 states and 34499 transitions. Word has length 71 [2023-12-25 09:39:45,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:45,906 INFO L495 AbstractCegarLoop]: Abstraction has 25897 states and 34499 transitions. [2023-12-25 09:39:45,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 25897 states and 34499 transitions. [2023-12-25 09:39:45,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-25 09:39:45,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:45,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:45,912 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 (25)] Ended with exit code 0 [2023-12-25 09:39:46,110 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 [2023-12-25 09:39:46,110 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:46,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:46,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1018398001, now seen corresponding path program 1 times [2023-12-25 09:39:46,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:46,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904965205] [2023-12-25 09:39:46,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:46,111 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 [2023-12-25 09:39:46,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:46,112 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) [2023-12-25 09:39:46,113 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 [2023-12-25 09:39:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:46,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-25 09:39:46,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:47,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:47,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:47,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:47,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904965205] [2023-12-25 09:39:47,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904965205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:47,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:47,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-25 09:39:47,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467979075] [2023-12-25 09:39:47,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:47,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 09:39:47,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:47,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 09:39:47,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-12-25 09:39:47,412 INFO L87 Difference]: Start difference. First operand 25897 states and 34499 transitions. Second operand has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:49,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:49,884 INFO L93 Difference]: Finished difference Result 98014 states and 131908 transitions. [2023-12-25 09:39:49,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-25 09:39:49,884 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-25 09:39:49,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:49,974 INFO L225 Difference]: With dead ends: 98014 [2023-12-25 09:39:49,975 INFO L226 Difference]: Without dead ends: 74854 [2023-12-25 09:39:50,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2023-12-25 09:39:50,008 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 1472 mSDsluCounter, 3247 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 3613 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:50,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 3613 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-25 09:39:50,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74854 states. [2023-12-25 09:39:50,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74854 to 70340. [2023-12-25 09:39:50,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70340 states, 70339 states have (on average 1.3436216039466014) internal successors, (94509), 70339 states have internal predecessors, (94509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70340 states to 70340 states and 94509 transitions. [2023-12-25 09:39:50,737 INFO L78 Accepts]: Start accepts. Automaton has 70340 states and 94509 transitions. Word has length 75 [2023-12-25 09:39:50,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:50,738 INFO L495 AbstractCegarLoop]: Abstraction has 70340 states and 94509 transitions. [2023-12-25 09:39:50,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:50,738 INFO L276 IsEmpty]: Start isEmpty. Operand 70340 states and 94509 transitions. [2023-12-25 09:39:50,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-25 09:39:50,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:50,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:50,748 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 (26)] Ended with exit code 0 [2023-12-25 09:39:50,943 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 [2023-12-25 09:39:50,943 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:50,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:50,944 INFO L85 PathProgramCache]: Analyzing trace with hash 499307479, now seen corresponding path program 1 times [2023-12-25 09:39:50,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:50,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76753139] [2023-12-25 09:39:50,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:50,944 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 [2023-12-25 09:39:50,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:50,945 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) [2023-12-25 09:39:50,946 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 [2023-12-25 09:39:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:51,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-25 09:39:51,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:51,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:51,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:51,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:51,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76753139] [2023-12-25 09:39:51,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76753139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:51,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:51,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-25 09:39:51,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122668963] [2023-12-25 09:39:51,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:51,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 09:39:51,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:51,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 09:39:51,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-12-25 09:39:51,991 INFO L87 Difference]: Start difference. First operand 70340 states and 94509 transitions. Second operand has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:54,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:54,182 INFO L93 Difference]: Finished difference Result 240881 states and 325087 transitions. [2023-12-25 09:39:54,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 09:39:54,183 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-25 09:39:54,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:54,704 INFO L225 Difference]: With dead ends: 240881 [2023-12-25 09:39:54,704 INFO L226 Difference]: Without dead ends: 188368 [2023-12-25 09:39:54,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2023-12-25 09:39:54,744 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1094 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:54,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 3054 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 09:39:54,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188368 states. [2023-12-25 09:39:56,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188368 to 80069. [2023-12-25 09:39:56,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80069 states, 80068 states have (on average 1.3553229754708498) internal successors, (108518), 80068 states have internal predecessors, (108518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:56,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80069 states to 80069 states and 108518 transitions. [2023-12-25 09:39:56,316 INFO L78 Accepts]: Start accepts. Automaton has 80069 states and 108518 transitions. Word has length 76 [2023-12-25 09:39:56,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:56,317 INFO L495 AbstractCegarLoop]: Abstraction has 80069 states and 108518 transitions. [2023-12-25 09:39:56,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:56,317 INFO L276 IsEmpty]: Start isEmpty. Operand 80069 states and 108518 transitions. [2023-12-25 09:39:56,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-25 09:39:56,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:56,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:56,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-12-25 09:39:56,520 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 [2023-12-25 09:39:56,520 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:56,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:56,521 INFO L85 PathProgramCache]: Analyzing trace with hash 311731105, now seen corresponding path program 1 times [2023-12-25 09:39:56,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:56,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266313314] [2023-12-25 09:39:56,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:56,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:39:56,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:56,522 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) [2023-12-25 09:39:56,523 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 [2023-12-25 09:39:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:56,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:39:56,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:56,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:56,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:56,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:56,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266313314] [2023-12-25 09:39:56,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266313314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:56,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:56,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:39:56,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142292255] [2023-12-25 09:39:56,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:56,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:39:56,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:56,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:39:56,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:39:56,613 INFO L87 Difference]: Start difference. First operand 80069 states and 108518 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:57,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:57,026 INFO L93 Difference]: Finished difference Result 107723 states and 145548 transitions. [2023-12-25 09:39:57,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:39:57,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-12-25 09:39:57,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:57,109 INFO L225 Difference]: With dead ends: 107723 [2023-12-25 09:39:57,109 INFO L226 Difference]: Without dead ends: 75303 [2023-12-25 09:39:57,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:39:57,131 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 144 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:57,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 516 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:39:57,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75303 states. [2023-12-25 09:39:57,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75303 to 75301. [2023-12-25 09:39:57,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75301 states, 75300 states have (on average 1.3369986719787517) internal successors, (100676), 75300 states have internal predecessors, (100676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:57,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75301 states to 75301 states and 100676 transitions. [2023-12-25 09:39:57,986 INFO L78 Accepts]: Start accepts. Automaton has 75301 states and 100676 transitions. Word has length 79 [2023-12-25 09:39:57,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:57,986 INFO L495 AbstractCegarLoop]: Abstraction has 75301 states and 100676 transitions. [2023-12-25 09:39:57,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:57,987 INFO L276 IsEmpty]: Start isEmpty. Operand 75301 states and 100676 transitions. [2023-12-25 09:39:57,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-25 09:39:57,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:57,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:57,992 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 (28)] Ended with exit code 0 [2023-12-25 09:39:58,190 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 [2023-12-25 09:39:58,190 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:58,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:58,191 INFO L85 PathProgramCache]: Analyzing trace with hash 69529100, now seen corresponding path program 1 times [2023-12-25 09:39:58,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:58,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015657124] [2023-12-25 09:39:58,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:58,191 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 [2023-12-25 09:39:58,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:58,192 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) [2023-12-25 09:39:58,204 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 [2023-12-25 09:39:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:58,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:39:58,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:39:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:39:58,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:39:58,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:39:58,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015657124] [2023-12-25 09:39:58,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015657124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:39:58,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:39:58,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:39:58,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682870253] [2023-12-25 09:39:58,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:39:58,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:39:58,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:39:58,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:39:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:39:58,298 INFO L87 Difference]: Start difference. First operand 75301 states and 100676 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:58,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:39:58,676 INFO L93 Difference]: Finished difference Result 86417 states and 115201 transitions. [2023-12-25 09:39:58,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:39:58,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-25 09:39:58,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:39:58,762 INFO L225 Difference]: With dead ends: 86417 [2023-12-25 09:39:58,762 INFO L226 Difference]: Without dead ends: 62412 [2023-12-25 09:39:58,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:39:58,774 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 122 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:39:58,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 488 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:39:58,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62412 states. [2023-12-25 09:39:59,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62412 to 41873. [2023-12-25 09:39:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41873 states, 41872 states have (on average 1.3203572793274743) internal successors, (55286), 41872 states have internal predecessors, (55286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:59,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41873 states to 41873 states and 55286 transitions. [2023-12-25 09:39:59,371 INFO L78 Accepts]: Start accepts. Automaton has 41873 states and 55286 transitions. Word has length 80 [2023-12-25 09:39:59,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:39:59,371 INFO L495 AbstractCegarLoop]: Abstraction has 41873 states and 55286 transitions. [2023-12-25 09:39:59,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:39:59,371 INFO L276 IsEmpty]: Start isEmpty. Operand 41873 states and 55286 transitions. [2023-12-25 09:39:59,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-25 09:39:59,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:39:59,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:39:59,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-12-25 09:39:59,575 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 [2023-12-25 09:39:59,575 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:39:59,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:39:59,575 INFO L85 PathProgramCache]: Analyzing trace with hash -807768363, now seen corresponding path program 1 times [2023-12-25 09:39:59,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:39:59,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046877017] [2023-12-25 09:39:59,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:39:59,576 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:39:59,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:39:59,577 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) [2023-12-25 09:39:59,578 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 [2023-12-25 09:39:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:39:59,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 09:39:59,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:40:00,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:40:00,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:40:00,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:40:00,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046877017] [2023-12-25 09:40:00,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046877017] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:40:00,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:40:00,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 09:40:00,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976487481] [2023-12-25 09:40:00,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:40:00,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 09:40:00,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:40:00,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 09:40:00,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-25 09:40:00,253 INFO L87 Difference]: Start difference. First operand 41873 states and 55286 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:00,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:40:00,916 INFO L93 Difference]: Finished difference Result 64231 states and 84929 transitions. [2023-12-25 09:40:00,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 09:40:00,917 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-12-25 09:40:00,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:40:00,980 INFO L225 Difference]: With dead ends: 64231 [2023-12-25 09:40:00,980 INFO L226 Difference]: Without dead ends: 51465 [2023-12-25 09:40:00,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-12-25 09:40:00,999 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 1221 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 09:40:00,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 1765 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 09:40:01,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51465 states. [2023-12-25 09:40:01,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51465 to 41832. [2023-12-25 09:40:01,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41832 states, 41831 states have (on average 1.3204800267744017) internal successors, (55237), 41831 states have internal predecessors, (55237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:01,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41832 states to 41832 states and 55237 transitions. [2023-12-25 09:40:01,460 INFO L78 Accepts]: Start accepts. Automaton has 41832 states and 55237 transitions. Word has length 81 [2023-12-25 09:40:01,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:40:01,461 INFO L495 AbstractCegarLoop]: Abstraction has 41832 states and 55237 transitions. [2023-12-25 09:40:01,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:01,461 INFO L276 IsEmpty]: Start isEmpty. Operand 41832 states and 55237 transitions. [2023-12-25 09:40:01,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-25 09:40:01,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:40:01,468 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:40:01,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-25 09:40:01,670 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 [2023-12-25 09:40:01,670 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:40:01,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:40:01,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1901503926, now seen corresponding path program 1 times [2023-12-25 09:40:01,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:40:01,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116767281] [2023-12-25 09:40:01,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:40:01,671 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 [2023-12-25 09:40:01,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:40:01,672 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) [2023-12-25 09:40:01,673 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 [2023-12-25 09:40:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:40:01,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:40:01,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:40:01,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:40:01,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:40:01,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:40:01,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116767281] [2023-12-25 09:40:01,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116767281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:40:01,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:40:01,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:40:01,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243145132] [2023-12-25 09:40:01,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:40:01,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:40:01,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:40:01,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:40:01,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:40:01,769 INFO L87 Difference]: Start difference. First operand 41832 states and 55237 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:01,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:40:01,941 INFO L93 Difference]: Finished difference Result 92425 states and 123272 transitions. [2023-12-25 09:40:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:40:01,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-25 09:40:01,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:40:02,193 INFO L225 Difference]: With dead ends: 92425 [2023-12-25 09:40:02,193 INFO L226 Difference]: Without dead ends: 64221 [2023-12-25 09:40:02,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:40:02,214 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 130 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:40:02,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 416 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:40:02,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64221 states. [2023-12-25 09:40:02,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64221 to 64219. [2023-12-25 09:40:02,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64219 states, 64218 states have (on average 1.3207044753807344) internal successors, (84813), 64218 states have internal predecessors, (84813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:02,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64219 states to 64219 states and 84813 transitions. [2023-12-25 09:40:02,905 INFO L78 Accepts]: Start accepts. Automaton has 64219 states and 84813 transitions. Word has length 89 [2023-12-25 09:40:02,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:40:02,905 INFO L495 AbstractCegarLoop]: Abstraction has 64219 states and 84813 transitions. [2023-12-25 09:40:02,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:02,905 INFO L276 IsEmpty]: Start isEmpty. Operand 64219 states and 84813 transitions. [2023-12-25 09:40:02,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-25 09:40:02,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:40:02,910 INFO L195 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:40:02,912 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 [2023-12-25 09:40:03,112 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 [2023-12-25 09:40:03,112 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:40:03,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:40:03,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1176433756, now seen corresponding path program 1 times [2023-12-25 09:40:03,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:40:03,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385176174] [2023-12-25 09:40:03,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:40:03,113 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 [2023-12-25 09:40:03,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:40:03,114 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) [2023-12-25 09:40:03,115 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 [2023-12-25 09:40:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:40:03,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:40:03,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:40:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:40:03,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:40:03,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:40:03,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385176174] [2023-12-25 09:40:03,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385176174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:40:03,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:40:03,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:40:03,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585917558] [2023-12-25 09:40:03,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:40:03,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:40:03,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:40:03,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:40:03,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:40:03,207 INFO L87 Difference]: Start difference. First operand 64219 states and 84813 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:40:03,663 INFO L93 Difference]: Finished difference Result 179163 states and 236637 transitions. [2023-12-25 09:40:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:40:03,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2023-12-25 09:40:03,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:40:03,803 INFO L225 Difference]: With dead ends: 179163 [2023-12-25 09:40:03,803 INFO L226 Difference]: Without dead ends: 115620 [2023-12-25 09:40:03,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:40:03,855 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 125 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:40:03,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 402 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:40:03,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115620 states. [2023-12-25 09:40:05,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115620 to 115618. [2023-12-25 09:40:05,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115618 states, 115617 states have (on average 1.3066331075879845) internal successors, (151069), 115617 states have internal predecessors, (151069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:05,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115618 states to 115618 states and 151069 transitions. [2023-12-25 09:40:05,298 INFO L78 Accepts]: Start accepts. Automaton has 115618 states and 151069 transitions. Word has length 93 [2023-12-25 09:40:05,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:40:05,298 INFO L495 AbstractCegarLoop]: Abstraction has 115618 states and 151069 transitions. [2023-12-25 09:40:05,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:05,298 INFO L276 IsEmpty]: Start isEmpty. Operand 115618 states and 151069 transitions. [2023-12-25 09:40:05,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-25 09:40:05,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:40:05,302 INFO L195 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:40:05,306 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 [2023-12-25 09:40:05,504 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 [2023-12-25 09:40:05,504 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:40:05,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:40:05,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1390643614, now seen corresponding path program 1 times [2023-12-25 09:40:05,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:40:05,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910632349] [2023-12-25 09:40:05,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:40:05,505 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 [2023-12-25 09:40:05,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:40:05,506 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) [2023-12-25 09:40:05,507 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 [2023-12-25 09:40:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:40:05,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:40:05,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:40:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:40:05,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:40:05,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:40:05,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910632349] [2023-12-25 09:40:05,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910632349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:40:05,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:40:05,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:40:05,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743118249] [2023-12-25 09:40:05,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:40:05,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:40:05,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:40:05,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:40:05,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:40:05,600 INFO L87 Difference]: Start difference. First operand 115618 states and 151069 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:06,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:40:06,462 INFO L93 Difference]: Finished difference Result 296730 states and 388287 transitions. [2023-12-25 09:40:06,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:40:06,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-25 09:40:06,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:40:06,682 INFO L225 Difference]: With dead ends: 296730 [2023-12-25 09:40:06,682 INFO L226 Difference]: Without dead ends: 181788 [2023-12-25 09:40:06,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:40:06,983 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 118 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:40:06,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 388 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:40:07,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181788 states. [2023-12-25 09:40:08,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181788 to 172006. [2023-12-25 09:40:08,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172006 states, 172005 states have (on average 1.2953402517368682) internal successors, (222805), 172005 states have internal predecessors, (222805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:09,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172006 states to 172006 states and 222805 transitions. [2023-12-25 09:40:09,120 INFO L78 Accepts]: Start accepts. Automaton has 172006 states and 222805 transitions. Word has length 94 [2023-12-25 09:40:09,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:40:09,120 INFO L495 AbstractCegarLoop]: Abstraction has 172006 states and 222805 transitions. [2023-12-25 09:40:09,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:09,120 INFO L276 IsEmpty]: Start isEmpty. Operand 172006 states and 222805 transitions. [2023-12-25 09:40:09,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-25 09:40:09,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:40:09,140 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:40:09,152 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 [2023-12-25 09:40:09,352 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 [2023-12-25 09:40:09,352 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:40:09,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:40:09,353 INFO L85 PathProgramCache]: Analyzing trace with hash -2070929324, now seen corresponding path program 1 times [2023-12-25 09:40:09,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:40:09,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323884805] [2023-12-25 09:40:09,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:40:09,353 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 [2023-12-25 09:40:09,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:40:09,354 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) [2023-12-25 09:40:09,356 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 [2023-12-25 09:40:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:40:09,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:40:09,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:40:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-25 09:40:09,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:40:09,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:40:09,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323884805] [2023-12-25 09:40:09,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323884805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:40:09,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:40:09,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:40:09,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820694391] [2023-12-25 09:40:09,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:40:09,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:40:09,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:40:09,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:40:09,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:40:09,481 INFO L87 Difference]: Start difference. First operand 172006 states and 222805 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:09,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:40:09,934 INFO L93 Difference]: Finished difference Result 201627 states and 260898 transitions. [2023-12-25 09:40:09,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:40:09,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-25 09:40:09,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:40:10,330 INFO L225 Difference]: With dead ends: 201627 [2023-12-25 09:40:10,330 INFO L226 Difference]: Without dead ends: 113994 [2023-12-25 09:40:10,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:40:10,375 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 117 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:40:10,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 472 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:40:10,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113994 states. [2023-12-25 09:40:11,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113994 to 96237. [2023-12-25 09:40:11,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96237 states, 96236 states have (on average 1.2864416642420715) internal successors, (123802), 96236 states have internal predecessors, (123802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:11,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96237 states to 96237 states and 123802 transitions. [2023-12-25 09:40:11,578 INFO L78 Accepts]: Start accepts. Automaton has 96237 states and 123802 transitions. Word has length 111 [2023-12-25 09:40:11,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:40:11,578 INFO L495 AbstractCegarLoop]: Abstraction has 96237 states and 123802 transitions. [2023-12-25 09:40:11,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:11,578 INFO L276 IsEmpty]: Start isEmpty. Operand 96237 states and 123802 transitions. [2023-12-25 09:40:11,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-25 09:40:11,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:40:11,586 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:40:11,589 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 [2023-12-25 09:40:11,788 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 [2023-12-25 09:40:11,789 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:40:11,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:40:11,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1949961602, now seen corresponding path program 1 times [2023-12-25 09:40:11,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:40:11,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211325479] [2023-12-25 09:40:11,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:40:11,790 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 [2023-12-25 09:40:11,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:40:11,791 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) [2023-12-25 09:40:11,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-25 09:40:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:40:11,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:40:11,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:40:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-25 09:40:11,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:40:11,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:40:11,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211325479] [2023-12-25 09:40:11,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211325479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:40:11,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:40:11,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:40:11,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527546224] [2023-12-25 09:40:11,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:40:11,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:40:11,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:40:11,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:40:11,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:40:11,891 INFO L87 Difference]: Start difference. First operand 96237 states and 123802 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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) [2023-12-25 09:40:12,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:40:12,623 INFO L93 Difference]: Finished difference Result 264533 states and 340704 transitions. [2023-12-25 09:40:12,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:40:12,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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 111 [2023-12-25 09:40:12,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:40:12,802 INFO L225 Difference]: With dead ends: 264533 [2023-12-25 09:40:12,803 INFO L226 Difference]: Without dead ends: 168889 [2023-12-25 09:40:12,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:40:12,857 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 113 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:40:12,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 380 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:40:12,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168889 states. [2023-12-25 09:40:14,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168889 to 168887. [2023-12-25 09:40:14,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168887 states, 168886 states have (on average 1.2726217685302512) internal successors, (214928), 168886 states have internal predecessors, (214928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:14,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168887 states to 168887 states and 214928 transitions. [2023-12-25 09:40:14,796 INFO L78 Accepts]: Start accepts. Automaton has 168887 states and 214928 transitions. Word has length 111 [2023-12-25 09:40:14,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:40:14,796 INFO L495 AbstractCegarLoop]: Abstraction has 168887 states and 214928 transitions. [2023-12-25 09:40:14,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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) [2023-12-25 09:40:14,797 INFO L276 IsEmpty]: Start isEmpty. Operand 168887 states and 214928 transitions. [2023-12-25 09:40:14,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-25 09:40:14,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:40:14,804 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:40:14,807 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 [2023-12-25 09:40:15,007 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 [2023-12-25 09:40:15,007 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:40:15,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:40:15,009 INFO L85 PathProgramCache]: Analyzing trace with hash 665844692, now seen corresponding path program 1 times [2023-12-25 09:40:15,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:40:15,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318064155] [2023-12-25 09:40:15,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:40:15,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:40:15,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:40:15,011 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) [2023-12-25 09:40:15,024 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 [2023-12-25 09:40:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:40:15,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 09:40:15,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:40:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:40:15,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:40:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:40:16,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:40:16,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318064155] [2023-12-25 09:40:16,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318064155] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:40:16,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:40:16,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 09:40:16,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370294955] [2023-12-25 09:40:16,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:40:16,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 09:40:16,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:40:16,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 09:40:16,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 09:40:16,132 INFO L87 Difference]: Start difference. First operand 168887 states and 214928 transitions. Second operand has 16 states, 16 states have (on average 13.5) internal successors, (216), 15 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:18,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:40:18,828 INFO L93 Difference]: Finished difference Result 450044 states and 570864 transitions. [2023-12-25 09:40:18,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-25 09:40:18,828 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.5) internal successors, (216), 15 states have internal predecessors, (216), 0 states have call successors, (0), 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 [2023-12-25 09:40:18,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:40:19,445 INFO L225 Difference]: With dead ends: 450044 [2023-12-25 09:40:19,446 INFO L226 Difference]: Without dead ends: 283122 [2023-12-25 09:40:19,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=441, Invalid=1041, Unknown=0, NotChecked=0, Total=1482 [2023-12-25 09:40:19,511 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1643 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:40:19,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1643 Valid, 1742 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 09:40:19,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283122 states. [2023-12-25 09:40:21,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283122 to 198605. [2023-12-25 09:40:21,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198605 states, 198604 states have (on average 1.2653018066101387) internal successors, (251294), 198604 states have internal predecessors, (251294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:22,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198605 states to 198605 states and 251294 transitions. [2023-12-25 09:40:22,075 INFO L78 Accepts]: Start accepts. Automaton has 198605 states and 251294 transitions. Word has length 114 [2023-12-25 09:40:22,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:40:22,075 INFO L495 AbstractCegarLoop]: Abstraction has 198605 states and 251294 transitions. [2023-12-25 09:40:22,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.5) internal successors, (216), 15 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:22,075 INFO L276 IsEmpty]: Start isEmpty. Operand 198605 states and 251294 transitions. [2023-12-25 09:40:22,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-25 09:40:22,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:40:22,083 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:40:22,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2023-12-25 09:40:22,283 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 [2023-12-25 09:40:22,283 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:40:22,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:40:22,283 INFO L85 PathProgramCache]: Analyzing trace with hash -135001814, now seen corresponding path program 1 times [2023-12-25 09:40:22,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:40:22,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493854502] [2023-12-25 09:40:22,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:40:22,284 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 [2023-12-25 09:40:22,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:40:22,285 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) [2023-12-25 09:40:22,285 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 [2023-12-25 09:40:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:40:22,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 09:40:22,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:40:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:40:23,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:40:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:40:23,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:40:23,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493854502] [2023-12-25 09:40:23,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493854502] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:40:23,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:40:23,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 09:40:23,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149380691] [2023-12-25 09:40:23,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:40:23,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 09:40:23,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:40:23,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 09:40:23,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 09:40:23,281 INFO L87 Difference]: Start difference. First operand 198605 states and 251294 transitions. Second operand has 16 states, 16 states have (on average 13.0) internal successors, (208), 15 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:25,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:40:25,915 INFO L93 Difference]: Finished difference Result 517473 states and 653326 transitions. [2023-12-25 09:40:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-25 09:40:25,916 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.0) internal successors, (208), 15 states have internal predecessors, (208), 0 states have call successors, (0), 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 [2023-12-25 09:40:25,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:40:26,637 INFO L225 Difference]: With dead ends: 517473 [2023-12-25 09:40:26,637 INFO L226 Difference]: Without dead ends: 340569 [2023-12-25 09:40:26,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=354, Invalid=906, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 09:40:26,697 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1688 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:40:26,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 1825 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 09:40:26,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340569 states. [2023-12-25 09:40:29,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340569 to 232259. [2023-12-25 09:40:29,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232259 states, 232258 states have (on average 1.2631986842218568) internal successors, (293388), 232258 states have internal predecessors, (293388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:29,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232259 states to 232259 states and 293388 transitions. [2023-12-25 09:40:29,735 INFO L78 Accepts]: Start accepts. Automaton has 232259 states and 293388 transitions. Word has length 114 [2023-12-25 09:40:29,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:40:29,735 INFO L495 AbstractCegarLoop]: Abstraction has 232259 states and 293388 transitions. [2023-12-25 09:40:29,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.0) internal successors, (208), 15 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:29,735 INFO L276 IsEmpty]: Start isEmpty. Operand 232259 states and 293388 transitions. [2023-12-25 09:40:29,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-25 09:40:29,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:40:29,743 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:40:29,748 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 [2023-12-25 09:40:29,946 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 [2023-12-25 09:40:29,946 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:40:29,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:40:29,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1560734562, now seen corresponding path program 1 times [2023-12-25 09:40:29,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:40:29,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121169540] [2023-12-25 09:40:29,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:40:29,947 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:40:29,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:40:29,948 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:40:29,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-25 09:40:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:40:30,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 09:40:30,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:40:30,839 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:40:30,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:40:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:40:31,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:40:31,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121169540] [2023-12-25 09:40:31,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121169540] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:40:31,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:40:31,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-25 09:40:31,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476734332] [2023-12-25 09:40:31,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:40:31,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 09:40:31,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:40:31,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 09:40:31,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-25 09:40:31,061 INFO L87 Difference]: Start difference. First operand 232259 states and 293388 transitions. Second operand has 16 states, 16 states have (on average 13.75) internal successors, (220), 15 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:34,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:40:34,516 INFO L93 Difference]: Finished difference Result 614726 states and 774476 transitions. [2023-12-25 09:40:34,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-25 09:40:34,517 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.75) internal successors, (220), 15 states have internal predecessors, (220), 0 states have call successors, (0), 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 [2023-12-25 09:40:34,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:40:35,067 INFO L225 Difference]: With dead ends: 614726 [2023-12-25 09:40:35,067 INFO L226 Difference]: Without dead ends: 383060 [2023-12-25 09:40:35,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=441, Invalid=1041, Unknown=0, NotChecked=0, Total=1482 [2023-12-25 09:40:35,183 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 2114 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2114 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:40:35,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2114 Valid, 2107 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-25 09:40:35,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383060 states. [2023-12-25 09:40:38,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383060 to 248925. [2023-12-25 09:40:38,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248925 states, 248924 states have (on average 1.2587697449824042) internal successors, (313338), 248924 states have internal predecessors, (313338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:38,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248925 states to 248925 states and 313338 transitions. [2023-12-25 09:40:38,955 INFO L78 Accepts]: Start accepts. Automaton has 248925 states and 313338 transitions. Word has length 114 [2023-12-25 09:40:38,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:40:38,955 INFO L495 AbstractCegarLoop]: Abstraction has 248925 states and 313338 transitions. [2023-12-25 09:40:38,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.75) internal successors, (220), 15 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:38,955 INFO L276 IsEmpty]: Start isEmpty. Operand 248925 states and 313338 transitions. [2023-12-25 09:40:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-25 09:40:38,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:40:38,963 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:40:38,969 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 (38)] Forceful destruction successful, exit code 0 [2023-12-25 09:40:39,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:40:39,167 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:40:39,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:40:39,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1797185761, now seen corresponding path program 1 times [2023-12-25 09:40:39,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:40:39,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638116756] [2023-12-25 09:40:39,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:40:39,168 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 [2023-12-25 09:40:39,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:40:39,169 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:40:39,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-25 09:40:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:40:39,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:40:39,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:40:39,271 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:40:39,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:40:39,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:40:39,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638116756] [2023-12-25 09:40:39,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638116756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:40:39,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:40:39,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:40:39,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879483760] [2023-12-25 09:40:39,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:40:39,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:40:39,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:40:39,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:40:39,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:40:39,273 INFO L87 Difference]: Start difference. First operand 248925 states and 313338 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 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) [2023-12-25 09:40:40,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:40:40,941 INFO L93 Difference]: Finished difference Result 488707 states and 616696 transitions. [2023-12-25 09:40:40,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:40:40,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 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 115 [2023-12-25 09:40:40,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:40:41,282 INFO L225 Difference]: With dead ends: 488707 [2023-12-25 09:40:41,283 INFO L226 Difference]: Without dead ends: 240375 [2023-12-25 09:40:41,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:40:41,345 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 109 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:40:41,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 394 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:40:41,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240375 states. [2023-12-25 09:40:43,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240375 to 221601. [2023-12-25 09:40:43,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221601 states, 221600 states have (on average 1.2430324909747292) internal successors, (275456), 221600 states have internal predecessors, (275456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:44,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221601 states to 221601 states and 275456 transitions. [2023-12-25 09:40:44,437 INFO L78 Accepts]: Start accepts. Automaton has 221601 states and 275456 transitions. Word has length 115 [2023-12-25 09:40:44,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:40:44,438 INFO L495 AbstractCegarLoop]: Abstraction has 221601 states and 275456 transitions. [2023-12-25 09:40:44,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 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) [2023-12-25 09:40:44,438 INFO L276 IsEmpty]: Start isEmpty. Operand 221601 states and 275456 transitions. [2023-12-25 09:40:44,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-25 09:40:44,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:40:44,458 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:40:44,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-12-25 09:40:44,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:40:44,664 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:40:44,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:40:44,665 INFO L85 PathProgramCache]: Analyzing trace with hash -467352603, now seen corresponding path program 1 times [2023-12-25 09:40:44,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:40:44,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246358486] [2023-12-25 09:40:44,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:40:44,665 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 [2023-12-25 09:40:44,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:40:44,666 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:40:44,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-25 09:40:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:40:44,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:40:44,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:40:44,918 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 09:40:44,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:40:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 09:40:45,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:40:45,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246358486] [2023-12-25 09:40:45,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246358486] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:40:45,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:40:45,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-25 09:40:45,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679427748] [2023-12-25 09:40:45,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:40:45,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 09:40:45,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:40:45,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 09:40:45,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-25 09:40:45,066 INFO L87 Difference]: Start difference. First operand 221601 states and 275456 transitions. Second operand has 8 states, 8 states have (on average 26.875) internal successors, (215), 8 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) [2023-12-25 09:40:47,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:40:47,494 INFO L93 Difference]: Finished difference Result 711117 states and 888412 transitions. [2023-12-25 09:40:47,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 09:40:47,495 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.875) internal successors, (215), 8 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 115 [2023-12-25 09:40:47,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:40:48,284 INFO L225 Difference]: With dead ends: 711117 [2023-12-25 09:40:48,284 INFO L226 Difference]: Without dead ends: 534641 [2023-12-25 09:40:48,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-25 09:40:48,390 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 511 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:40:48,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1060 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:40:48,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534641 states. [2023-12-25 09:40:53,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534641 to 532059. [2023-12-25 09:40:54,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532059 states, 532058 states have (on average 1.219867006980442) internal successors, (649040), 532058 states have internal predecessors, (649040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:55,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532059 states to 532059 states and 649040 transitions. [2023-12-25 09:40:55,308 INFO L78 Accepts]: Start accepts. Automaton has 532059 states and 649040 transitions. Word has length 115 [2023-12-25 09:40:55,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:40:55,308 INFO L495 AbstractCegarLoop]: Abstraction has 532059 states and 649040 transitions. [2023-12-25 09:40:55,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.875) internal successors, (215), 8 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) [2023-12-25 09:40:55,308 INFO L276 IsEmpty]: Start isEmpty. Operand 532059 states and 649040 transitions. [2023-12-25 09:40:55,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-25 09:40:55,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:40:55,320 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:40:55,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-12-25 09:40:55,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:40:55,523 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:40:55,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:40:55,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1555020541, now seen corresponding path program 1 times [2023-12-25 09:40:55,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:40:55,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999937723] [2023-12-25 09:40:55,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:40:55,524 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 [2023-12-25 09:40:55,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:40:55,525 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:40:55,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-25 09:40:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:40:55,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:40:55,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:40:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:40:55,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:40:55,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:40:55,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999937723] [2023-12-25 09:40:55,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [999937723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:40:55,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:40:55,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:40:55,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922356211] [2023-12-25 09:40:55,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:40:55,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:40:55,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:40:55,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:40:55,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:40:55,635 INFO L87 Difference]: Start difference. First operand 532059 states and 649040 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:40:58,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:40:58,098 INFO L93 Difference]: Finished difference Result 738955 states and 902523 transitions. [2023-12-25 09:40:58,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:40:58,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2023-12-25 09:40:58,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:40:58,387 INFO L225 Difference]: With dead ends: 738955 [2023-12-25 09:40:58,387 INFO L226 Difference]: Without dead ends: 207489 [2023-12-25 09:40:58,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:40:58,497 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 100 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:40:58,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 366 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:40:58,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207489 states. [2023-12-25 09:41:00,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207489 to 207487. [2023-12-25 09:41:00,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207487 states, 207486 states have (on average 1.2057825588232458) internal successors, (250183), 207486 states have internal predecessors, (250183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:00,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207487 states to 207487 states and 250183 transitions. [2023-12-25 09:41:00,930 INFO L78 Accepts]: Start accepts. Automaton has 207487 states and 250183 transitions. Word has length 122 [2023-12-25 09:41:00,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:41:00,930 INFO L495 AbstractCegarLoop]: Abstraction has 207487 states and 250183 transitions. [2023-12-25 09:41:00,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:00,930 INFO L276 IsEmpty]: Start isEmpty. Operand 207487 states and 250183 transitions. [2023-12-25 09:41:00,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-25 09:41:00,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:41:00,937 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:41:00,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2023-12-25 09:41:01,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:41:01,138 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:41:01,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:41:01,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1215331218, now seen corresponding path program 1 times [2023-12-25 09:41:01,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:41:01,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624949218] [2023-12-25 09:41:01,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:41:01,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:41:01,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:41:01,140 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:41:01,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-25 09:41:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:41:01,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 09:41:01,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:41:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:41:01,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:41:01,438 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:41:01,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:41:01,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624949218] [2023-12-25 09:41:01,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624949218] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:41:01,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:41:01,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-25 09:41:01,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041341809] [2023-12-25 09:41:01,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:41:01,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 09:41:01,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:41:01,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 09:41:01,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-25 09:41:01,439 INFO L87 Difference]: Start difference. First operand 207487 states and 250183 transitions. Second operand has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:02,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:41:02,493 INFO L93 Difference]: Finished difference Result 352401 states and 423683 transitions. [2023-12-25 09:41:02,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 09:41:02,494 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 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 125 [2023-12-25 09:41:02,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:41:02,720 INFO L225 Difference]: With dead ends: 352401 [2023-12-25 09:41:02,720 INFO L226 Difference]: Without dead ends: 181880 [2023-12-25 09:41:03,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-25 09:41:03,065 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 1329 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:41:03,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 522 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:41:03,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181880 states. [2023-12-25 09:41:04,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181880 to 167572. [2023-12-25 09:41:04,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167572 states, 167571 states have (on average 1.1917038150992714) internal successors, (199695), 167571 states have internal predecessors, (199695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:04,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167572 states to 167572 states and 199695 transitions. [2023-12-25 09:41:04,912 INFO L78 Accepts]: Start accepts. Automaton has 167572 states and 199695 transitions. Word has length 125 [2023-12-25 09:41:04,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:41:04,912 INFO L495 AbstractCegarLoop]: Abstraction has 167572 states and 199695 transitions. [2023-12-25 09:41:04,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:04,912 INFO L276 IsEmpty]: Start isEmpty. Operand 167572 states and 199695 transitions. [2023-12-25 09:41:05,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-25 09:41:05,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:41:05,182 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:41:05,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-12-25 09:41:05,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:41:05,382 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:41:05,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:41:05,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1718377762, now seen corresponding path program 1 times [2023-12-25 09:41:05,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:41:05,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991604892] [2023-12-25 09:41:05,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:41:05,383 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 [2023-12-25 09:41:05,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:41:05,385 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:41:05,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-25 09:41:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:41:05,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 09:41:05,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:41:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:41:05,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:41:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:41:05,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:41:05,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991604892] [2023-12-25 09:41:05,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991604892] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:41:05,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:41:05,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-25 09:41:05,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646020384] [2023-12-25 09:41:05,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:41:05,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 09:41:05,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:41:05,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 09:41:05,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-25 09:41:05,688 INFO L87 Difference]: Start difference. First operand 167572 states and 199695 transitions. Second operand has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:06,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:41:06,741 INFO L93 Difference]: Finished difference Result 352846 states and 419448 transitions. [2023-12-25 09:41:06,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 09:41:06,741 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 0 states have call successors, (0), 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 125 [2023-12-25 09:41:06,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:41:07,017 INFO L225 Difference]: With dead ends: 352846 [2023-12-25 09:41:07,017 INFO L226 Difference]: Without dead ends: 219426 [2023-12-25 09:41:07,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-25 09:41:07,100 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1536 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:41:07,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 552 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:41:07,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219426 states. [2023-12-25 09:41:08,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219426 to 168201. [2023-12-25 09:41:08,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168201 states, 168200 states have (on average 1.183781212841855) internal successors, (199112), 168200 states have internal predecessors, (199112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:09,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168201 states to 168201 states and 199112 transitions. [2023-12-25 09:41:09,365 INFO L78 Accepts]: Start accepts. Automaton has 168201 states and 199112 transitions. Word has length 125 [2023-12-25 09:41:09,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:41:09,365 INFO L495 AbstractCegarLoop]: Abstraction has 168201 states and 199112 transitions. [2023-12-25 09:41:09,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:09,365 INFO L276 IsEmpty]: Start isEmpty. Operand 168201 states and 199112 transitions. [2023-12-25 09:41:09,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-25 09:41:09,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:41:09,372 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:41:09,390 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 (43)] Forceful destruction successful, exit code 0 [2023-12-25 09:41:09,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:41:09,575 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:41:09,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:41:09,576 INFO L85 PathProgramCache]: Analyzing trace with hash 2017705560, now seen corresponding path program 1 times [2023-12-25 09:41:09,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:41:09,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956246074] [2023-12-25 09:41:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:41:09,576 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:41:09,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:41:09,577 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:41:09,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-12-25 09:41:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:41:09,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 09:41:09,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:41:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:41:10,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:41:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:41:10,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:41:10,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956246074] [2023-12-25 09:41:10,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956246074] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:41:10,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:41:10,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-25 09:41:10,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045475517] [2023-12-25 09:41:10,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:41:10,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 09:41:10,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:41:10,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 09:41:10,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2023-12-25 09:41:10,850 INFO L87 Difference]: Start difference. First operand 168201 states and 199112 transitions. Second operand has 26 states, 26 states have (on average 9.038461538461538) internal successors, (235), 25 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:18,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:41:18,583 INFO L93 Difference]: Finished difference Result 399765 states and 474852 transitions. [2023-12-25 09:41:18,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-25 09:41:18,583 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.038461538461538) internal successors, (235), 25 states have internal predecessors, (235), 0 states have call successors, (0), 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 126 [2023-12-25 09:41:18,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:41:18,918 INFO L225 Difference]: With dead ends: 399765 [2023-12-25 09:41:18,919 INFO L226 Difference]: Without dead ends: 272704 [2023-12-25 09:41:18,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2526 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1717, Invalid=7403, Unknown=0, NotChecked=0, Total=9120 [2023-12-25 09:41:18,987 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 4524 mSDsluCounter, 4684 mSDsCounter, 0 mSdLazyCounter, 4415 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4524 SdHoareTripleChecker+Valid, 5104 SdHoareTripleChecker+Invalid, 4437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 4415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-25 09:41:18,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4524 Valid, 5104 Invalid, 4437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 4415 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-25 09:41:19,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272704 states. [2023-12-25 09:41:20,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272704 to 158024. [2023-12-25 09:41:20,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158024 states, 158023 states have (on average 1.1811824860937965) internal successors, (186654), 158023 states have internal predecessors, (186654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:21,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158024 states to 158024 states and 186654 transitions. [2023-12-25 09:41:21,437 INFO L78 Accepts]: Start accepts. Automaton has 158024 states and 186654 transitions. Word has length 126 [2023-12-25 09:41:21,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:41:21,438 INFO L495 AbstractCegarLoop]: Abstraction has 158024 states and 186654 transitions. [2023-12-25 09:41:21,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.038461538461538) internal successors, (235), 25 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:21,438 INFO L276 IsEmpty]: Start isEmpty. Operand 158024 states and 186654 transitions. [2023-12-25 09:41:21,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-25 09:41:21,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:41:21,445 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:41:21,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2023-12-25 09:41:21,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:41:21,646 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:41:21,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:41:21,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2031397990, now seen corresponding path program 1 times [2023-12-25 09:41:21,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:41:21,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325666491] [2023-12-25 09:41:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:41:21,647 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 [2023-12-25 09:41:21,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:41:21,648 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:41:21,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-12-25 09:41:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:41:21,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 09:41:21,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:41:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:41:21,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:41:21,948 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:41:21,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:41:21,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325666491] [2023-12-25 09:41:21,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325666491] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:41:21,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:41:21,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-25 09:41:21,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373872447] [2023-12-25 09:41:21,948 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:41:21,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 09:41:21,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:41:21,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 09:41:21,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-25 09:41:21,949 INFO L87 Difference]: Start difference. First operand 158024 states and 186654 transitions. Second operand has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:22,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:41:22,883 INFO L93 Difference]: Finished difference Result 316815 states and 373173 transitions. [2023-12-25 09:41:22,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 09:41:22,884 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 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 127 [2023-12-25 09:41:22,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:41:23,088 INFO L225 Difference]: With dead ends: 316815 [2023-12-25 09:41:23,088 INFO L226 Difference]: Without dead ends: 184416 [2023-12-25 09:41:23,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-25 09:41:23,166 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 889 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:41:23,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 520 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:41:23,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184416 states. [2023-12-25 09:41:24,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184416 to 149140. [2023-12-25 09:41:24,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149140 states, 149139 states have (on average 1.1666767243980447) internal successors, (173997), 149139 states have internal predecessors, (173997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:25,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149140 states to 149140 states and 173997 transitions. [2023-12-25 09:41:25,040 INFO L78 Accepts]: Start accepts. Automaton has 149140 states and 173997 transitions. Word has length 127 [2023-12-25 09:41:25,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:41:25,040 INFO L495 AbstractCegarLoop]: Abstraction has 149140 states and 173997 transitions. [2023-12-25 09:41:25,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:25,041 INFO L276 IsEmpty]: Start isEmpty. Operand 149140 states and 173997 transitions. [2023-12-25 09:41:25,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-25 09:41:25,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:41:25,046 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:41:25,049 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 (45)] Ended with exit code 0 [2023-12-25 09:41:25,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:41:25,247 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:41:25,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:41:25,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2084865613, now seen corresponding path program 1 times [2023-12-25 09:41:25,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:41:25,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055906175] [2023-12-25 09:41:25,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:41:25,248 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 [2023-12-25 09:41:25,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:41:25,249 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:41:25,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-12-25 09:41:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:41:25,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 09:41:25,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:41:25,747 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:41:25,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:41:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:41:25,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:41:25,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055906175] [2023-12-25 09:41:25,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055906175] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:41:25,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:41:25,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-25 09:41:25,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573859976] [2023-12-25 09:41:25,801 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:41:25,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 09:41:25,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:41:25,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 09:41:25,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-25 09:41:25,801 INFO L87 Difference]: Start difference. First operand 149140 states and 173997 transitions. Second operand has 9 states, 9 states have (on average 27.22222222222222) internal successors, (245), 9 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:26,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:41:26,793 INFO L93 Difference]: Finished difference Result 300817 states and 350902 transitions. [2023-12-25 09:41:26,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 09:41:26,793 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 27.22222222222222) internal successors, (245), 9 states have internal predecessors, (245), 0 states have call successors, (0), 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 127 [2023-12-25 09:41:26,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:41:27,016 INFO L225 Difference]: With dead ends: 300817 [2023-12-25 09:41:27,016 INFO L226 Difference]: Without dead ends: 178975 [2023-12-25 09:41:27,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-25 09:41:27,076 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 1033 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 09:41:27,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 515 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 09:41:27,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178975 states. [2023-12-25 09:41:28,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178975 to 159736. [2023-12-25 09:41:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159736 states, 159735 states have (on average 1.1566219050302062) internal successors, (184753), 159735 states have internal predecessors, (184753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:29,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159736 states to 159736 states and 184753 transitions. [2023-12-25 09:41:29,058 INFO L78 Accepts]: Start accepts. Automaton has 159736 states and 184753 transitions. Word has length 127 [2023-12-25 09:41:29,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:41:29,058 INFO L495 AbstractCegarLoop]: Abstraction has 159736 states and 184753 transitions. [2023-12-25 09:41:29,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.22222222222222) internal successors, (245), 9 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:29,059 INFO L276 IsEmpty]: Start isEmpty. Operand 159736 states and 184753 transitions. [2023-12-25 09:41:29,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-25 09:41:29,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:41:29,066 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:41:29,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2023-12-25 09:41:29,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:41:29,267 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:41:29,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:41:29,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1114144804, now seen corresponding path program 1 times [2023-12-25 09:41:29,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:41:29,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155642568] [2023-12-25 09:41:29,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:41:29,268 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:41:29,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:41:29,269 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:41:29,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-12-25 09:41:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:41:29,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:41:29,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:41:29,399 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 09:41:29,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:41:29,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:41:29,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155642568] [2023-12-25 09:41:29,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155642568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:41:29,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:41:29,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:41:29,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608020132] [2023-12-25 09:41:29,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:41:29,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:41:29,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:41:29,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:41:29,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:41:29,400 INFO L87 Difference]: Start difference. First operand 159736 states and 184753 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:30,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:41:30,203 INFO L93 Difference]: Finished difference Result 276797 states and 320433 transitions. [2023-12-25 09:41:30,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:41:30,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 130 [2023-12-25 09:41:30,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:41:30,481 INFO L225 Difference]: With dead ends: 276797 [2023-12-25 09:41:30,481 INFO L226 Difference]: Without dead ends: 224924 [2023-12-25 09:41:30,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:41:30,539 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 134 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:41:30,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 330 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:41:30,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224924 states. [2023-12-25 09:41:32,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224924 to 136793. [2023-12-25 09:41:32,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136793 states, 136792 states have (on average 1.1531449207555997) internal successors, (157741), 136792 states have internal predecessors, (157741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:32,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136793 states to 136793 states and 157741 transitions. [2023-12-25 09:41:32,436 INFO L78 Accepts]: Start accepts. Automaton has 136793 states and 157741 transitions. Word has length 130 [2023-12-25 09:41:32,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:41:32,437 INFO L495 AbstractCegarLoop]: Abstraction has 136793 states and 157741 transitions. [2023-12-25 09:41:32,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:32,437 INFO L276 IsEmpty]: Start isEmpty. Operand 136793 states and 157741 transitions. [2023-12-25 09:41:32,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-25 09:41:32,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:41:32,443 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:41:32,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2023-12-25 09:41:32,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:41:32,643 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:41:32,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:41:32,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1243687128, now seen corresponding path program 1 times [2023-12-25 09:41:32,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:41:32,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199049235] [2023-12-25 09:41:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:41:32,644 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 [2023-12-25 09:41:32,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:41:32,646 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:41:32,646 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 (48)] Waiting until timeout for monitored process [2023-12-25 09:41:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:41:32,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 09:41:32,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:41:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:41:33,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:41:33,960 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:41:33,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:41:33,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199049235] [2023-12-25 09:41:33,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199049235] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:41:33,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:41:33,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2023-12-25 09:41:33,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613929059] [2023-12-25 09:41:33,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:41:33,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 09:41:33,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:41:33,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 09:41:33,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-12-25 09:41:33,962 INFO L87 Difference]: Start difference. First operand 136793 states and 157741 transitions. Second operand has 23 states, 23 states have (on average 10.565217391304348) internal successors, (243), 23 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:39,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:41:39,187 INFO L93 Difference]: Finished difference Result 296990 states and 339380 transitions. [2023-12-25 09:41:39,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-25 09:41:39,188 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.565217391304348) internal successors, (243), 23 states have internal predecessors, (243), 0 states have call successors, (0), 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 131 [2023-12-25 09:41:39,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:41:39,767 INFO L225 Difference]: With dead ends: 296990 [2023-12-25 09:41:39,768 INFO L226 Difference]: Without dead ends: 271119 [2023-12-25 09:41:39,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1215, Invalid=3755, Unknown=0, NotChecked=0, Total=4970 [2023-12-25 09:41:39,872 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 2810 mSDsluCounter, 7482 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2810 SdHoareTripleChecker+Valid, 7981 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:41:39,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2810 Valid, 7981 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 09:41:40,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271119 states. [2023-12-25 09:41:41,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271119 to 168543. [2023-12-25 09:41:41,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168543 states, 168542 states have (on average 1.1478088547661711) internal successors, (193454), 168542 states have internal predecessors, (193454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:42,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168543 states to 168543 states and 193454 transitions. [2023-12-25 09:41:42,039 INFO L78 Accepts]: Start accepts. Automaton has 168543 states and 193454 transitions. Word has length 131 [2023-12-25 09:41:42,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:41:42,039 INFO L495 AbstractCegarLoop]: Abstraction has 168543 states and 193454 transitions. [2023-12-25 09:41:42,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.565217391304348) internal successors, (243), 23 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:42,040 INFO L276 IsEmpty]: Start isEmpty. Operand 168543 states and 193454 transitions. [2023-12-25 09:41:42,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-25 09:41:42,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:41:42,048 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:41:42,053 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 (48)] Forceful destruction successful, exit code 0 [2023-12-25 09:41:42,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:41:42,250 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:41:42,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:41:42,250 INFO L85 PathProgramCache]: Analyzing trace with hash -401688290, now seen corresponding path program 1 times [2023-12-25 09:41:42,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:41:42,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448395461] [2023-12-25 09:41:42,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:41:42,251 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 [2023-12-25 09:41:42,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:41:42,252 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:41:42,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2023-12-25 09:41:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:41:42,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 09:41:42,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:41:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:41:43,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:41:43,399 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:41:43,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:41:43,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448395461] [2023-12-25 09:41:43,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448395461] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:41:43,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:41:43,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2023-12-25 09:41:43,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919829616] [2023-12-25 09:41:43,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:41:43,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 09:41:43,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:41:43,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 09:41:43,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-12-25 09:41:43,401 INFO L87 Difference]: Start difference. First operand 168543 states and 193454 transitions. Second operand has 23 states, 23 states have (on average 10.478260869565217) internal successors, (241), 23 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:47,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:41:47,123 INFO L93 Difference]: Finished difference Result 367397 states and 421964 transitions. [2023-12-25 09:41:47,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-25 09:41:47,124 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.478260869565217) internal successors, (241), 23 states have internal predecessors, (241), 0 states have call successors, (0), 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 133 [2023-12-25 09:41:47,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:41:47,508 INFO L225 Difference]: With dead ends: 367397 [2023-12-25 09:41:47,508 INFO L226 Difference]: Without dead ends: 323442 [2023-12-25 09:41:47,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=856, Invalid=2804, Unknown=0, NotChecked=0, Total=3660 [2023-12-25 09:41:47,601 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 2642 mSDsluCounter, 6514 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2642 SdHoareTripleChecker+Valid, 7011 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:41:47,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2642 Valid, 7011 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 09:41:47,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323442 states. [2023-12-25 09:41:49,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323442 to 221796. [2023-12-25 09:41:50,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221796 states, 221795 states have (on average 1.1427714781667757) internal successors, (253461), 221795 states have internal predecessors, (253461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:50,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221796 states to 221796 states and 253461 transitions. [2023-12-25 09:41:50,667 INFO L78 Accepts]: Start accepts. Automaton has 221796 states and 253461 transitions. Word has length 133 [2023-12-25 09:41:50,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:41:50,668 INFO L495 AbstractCegarLoop]: Abstraction has 221796 states and 253461 transitions. [2023-12-25 09:41:50,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.478260869565217) internal successors, (241), 23 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:50,668 INFO L276 IsEmpty]: Start isEmpty. Operand 221796 states and 253461 transitions. [2023-12-25 09:41:50,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-25 09:41:50,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:41:50,675 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:41:50,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2023-12-25 09:41:50,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:41:50,876 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:41:50,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:41:50,877 INFO L85 PathProgramCache]: Analyzing trace with hash 92058372, now seen corresponding path program 1 times [2023-12-25 09:41:50,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:41:50,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795128006] [2023-12-25 09:41:50,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:41:50,877 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 [2023-12-25 09:41:50,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:41:50,878 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:41:50,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2023-12-25 09:41:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:41:50,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 09:41:50,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:41:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:41:51,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:41:52,188 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:41:52,188 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:41:52,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795128006] [2023-12-25 09:41:52,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795128006] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:41:52,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:41:52,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2023-12-25 09:41:52,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969344823] [2023-12-25 09:41:52,188 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:41:52,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 09:41:52,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:41:52,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 09:41:52,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-12-25 09:41:52,189 INFO L87 Difference]: Start difference. First operand 221796 states and 253461 transitions. Second operand has 23 states, 23 states have (on average 10.652173913043478) internal successors, (245), 23 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:55,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:41:55,263 INFO L93 Difference]: Finished difference Result 392138 states and 447919 transitions. [2023-12-25 09:41:55,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-25 09:41:55,264 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.652173913043478) internal successors, (245), 23 states have internal predecessors, (245), 0 states have call successors, (0), 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 133 [2023-12-25 09:41:55,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:41:55,658 INFO L225 Difference]: With dead ends: 392138 [2023-12-25 09:41:55,658 INFO L226 Difference]: Without dead ends: 327283 [2023-12-25 09:41:55,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=732, Invalid=2574, Unknown=0, NotChecked=0, Total=3306 [2023-12-25 09:41:55,733 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 3711 mSDsluCounter, 6712 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3711 SdHoareTripleChecker+Valid, 7236 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 09:41:55,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3711 Valid, 7236 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 09:41:55,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327283 states. [2023-12-25 09:41:58,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327283 to 251453. [2023-12-25 09:41:58,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251453 states, 251452 states have (on average 1.1379149897395924) internal successors, (286131), 251452 states have internal predecessors, (286131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:58,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251453 states to 251453 states and 286131 transitions. [2023-12-25 09:41:58,901 INFO L78 Accepts]: Start accepts. Automaton has 251453 states and 286131 transitions. Word has length 133 [2023-12-25 09:41:58,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:41:58,902 INFO L495 AbstractCegarLoop]: Abstraction has 251453 states and 286131 transitions. [2023-12-25 09:41:58,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.652173913043478) internal successors, (245), 23 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:41:58,902 INFO L276 IsEmpty]: Start isEmpty. Operand 251453 states and 286131 transitions. [2023-12-25 09:41:58,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-25 09:41:58,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:41:58,912 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:41:58,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2023-12-25 09:41:59,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:41:59,115 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:41:59,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:41:59,116 INFO L85 PathProgramCache]: Analyzing trace with hash 358266052, now seen corresponding path program 1 times [2023-12-25 09:41:59,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:41:59,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374646262] [2023-12-25 09:41:59,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:41:59,116 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 [2023-12-25 09:41:59,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:41:59,117 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:41:59,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2023-12-25 09:41:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:41:59,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-25 09:41:59,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:42:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:42:00,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:42:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:42:01,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:42:01,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374646262] [2023-12-25 09:42:01,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374646262] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:42:01,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:42:01,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 40 [2023-12-25 09:42:01,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225549749] [2023-12-25 09:42:01,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:42:01,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-25 09:42:01,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:42:01,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-25 09:42:01,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 09:42:01,769 INFO L87 Difference]: Start difference. First operand 251453 states and 286131 transitions. Second operand has 40 states, 40 states have (on average 6.425) internal successors, (257), 40 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:43:16,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:43:16,004 INFO L93 Difference]: Finished difference Result 930147 states and 1056146 transitions. [2023-12-25 09:43:16,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 533 states. [2023-12-25 09:43:16,004 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.425) internal successors, (257), 40 states have internal predecessors, (257), 0 states have call successors, (0), 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 133 [2023-12-25 09:43:16,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:43:17,360 INFO L225 Difference]: With dead ends: 930147 [2023-12-25 09:43:17,360 INFO L226 Difference]: Without dead ends: 882411 [2023-12-25 09:43:17,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 564 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145477 ImplicationChecksByTransitivity, 64.0s TimeCoverageRelationStatistics Valid=30749, Invalid=289041, Unknown=0, NotChecked=0, Total=319790 [2023-12-25 09:43:17,721 INFO L413 NwaCegarLoop]: 1235 mSDtfsCounter, 11127 mSDsluCounter, 25929 mSDsCounter, 0 mSdLazyCounter, 7382 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11127 SdHoareTripleChecker+Valid, 27164 SdHoareTripleChecker+Invalid, 7601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 7382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:43:17,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11127 Valid, 27164 Invalid, 7601 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [219 Valid, 7382 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-12-25 09:43:18,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882411 states. [2023-12-25 09:43:24,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882411 to 327635. [2023-12-25 09:43:24,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327635 states, 327634 states have (on average 1.1366616407332573) internal successors, (372409), 327634 states have internal predecessors, (372409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:43:25,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327635 states to 327635 states and 372409 transitions. [2023-12-25 09:43:25,253 INFO L78 Accepts]: Start accepts. Automaton has 327635 states and 372409 transitions. Word has length 133 [2023-12-25 09:43:25,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:43:25,253 INFO L495 AbstractCegarLoop]: Abstraction has 327635 states and 372409 transitions. [2023-12-25 09:43:25,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.425) internal successors, (257), 40 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:43:25,257 INFO L276 IsEmpty]: Start isEmpty. Operand 327635 states and 372409 transitions. [2023-12-25 09:43:25,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-25 09:43:25,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:43:25,268 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:43:25,272 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 (51)] Forceful destruction successful, exit code 0 [2023-12-25 09:43:25,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:43:25,469 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:43:25,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:43:25,470 INFO L85 PathProgramCache]: Analyzing trace with hash 68415723, now seen corresponding path program 1 times [2023-12-25 09:43:25,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:43:25,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489656365] [2023-12-25 09:43:25,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:43:25,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:43:25,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:43:25,471 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:43:25,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2023-12-25 09:43:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:43:25,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 09:43:25,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:43:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 09:43:26,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:43:26,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:43:26,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489656365] [2023-12-25 09:43:26,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489656365] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:43:26,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:43:26,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 09:43:26,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956335434] [2023-12-25 09:43:26,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:43:26,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 09:43:26,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:43:26,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 09:43:26,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-25 09:43:26,414 INFO L87 Difference]: Start difference. First operand 327635 states and 372409 transitions. Second operand has 10 states, 10 states have (on average 13.1) internal successors, (131), 9 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) [2023-12-25 09:43:28,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:43:28,737 INFO L93 Difference]: Finished difference Result 457109 states and 520075 transitions. [2023-12-25 09:43:28,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 09:43:28,738 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.1) internal successors, (131), 9 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 133 [2023-12-25 09:43:28,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:43:29,299 INFO L225 Difference]: With dead ends: 457109 [2023-12-25 09:43:29,299 INFO L226 Difference]: Without dead ends: 398081 [2023-12-25 09:43:29,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-12-25 09:43:29,344 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 1072 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 09:43:29,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 1062 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 09:43:29,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398081 states. [2023-12-25 09:43:32,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398081 to 323545. [2023-12-25 09:43:32,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323545 states, 323544 states have (on average 1.1367294711074847) internal successors, (367782), 323544 states have internal predecessors, (367782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:43:33,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323545 states to 323545 states and 367782 transitions. [2023-12-25 09:43:33,622 INFO L78 Accepts]: Start accepts. Automaton has 323545 states and 367782 transitions. Word has length 133 [2023-12-25 09:43:33,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:43:33,623 INFO L495 AbstractCegarLoop]: Abstraction has 323545 states and 367782 transitions. [2023-12-25 09:43:33,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.1) internal successors, (131), 9 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) [2023-12-25 09:43:33,623 INFO L276 IsEmpty]: Start isEmpty. Operand 323545 states and 367782 transitions. [2023-12-25 09:43:33,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-25 09:43:33,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:43:33,637 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:43:33,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2023-12-25 09:43:33,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:43:33,840 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:43:33,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:43:33,842 INFO L85 PathProgramCache]: Analyzing trace with hash 421111142, now seen corresponding path program 1 times [2023-12-25 09:43:33,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:43:33,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357383672] [2023-12-25 09:43:33,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:43:33,843 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 [2023-12-25 09:43:33,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:43:33,844 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 09:43:33,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2023-12-25 09:43:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:43:33,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-25 09:43:33,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:43:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:43:35,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 09:43:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:43:36,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:43:36,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357383672] [2023-12-25 09:43:36,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357383672] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 09:43:36,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 09:43:36,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 41 [2023-12-25 09:43:36,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872873987] [2023-12-25 09:43:36,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 09:43:36,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-25 09:43:36,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:43:36,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-25 09:43:36,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2023-12-25 09:43:36,315 INFO L87 Difference]: Start difference. First operand 323545 states and 367782 transitions. Second operand has 41 states, 41 states have (on average 6.146341463414634) internal successors, (252), 41 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)