/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/eca-rers2012/Problem14_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 12:23:14,209 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 12:23:14,291 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 12:23:14,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 12:23:14,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 12:23:14,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 12:23:14,325 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 12:23:14,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 12:23:14,326 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 12:23:14,330 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 12:23:14,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 12:23:14,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 12:23:14,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 12:23:14,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 12:23:14,332 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 12:23:14,333 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 12:23:14,333 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 12:23:14,333 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 12:23:14,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 12:23:14,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 12:23:14,334 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 12:23:14,334 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 12:23:14,334 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 12:23:14,334 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 12:23:14,335 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 12:23:14,335 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 12:23:14,335 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 12:23:14,335 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 12:23:14,335 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 12:23:14,335 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 12:23:14,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 12:23:14,337 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 12:23:14,337 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 12:23:14,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 12:23:14,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 12:23:14,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 12:23:14,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 12:23:14,337 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 12:23:14,338 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 12:23:14,338 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 12:23:14,338 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 12:23:14,338 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 12:23:14,338 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 12:23:14,338 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 12:23:14,339 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 12:23:14,339 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 12:23:14,339 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 12:23:14,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 12:23:14,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 12:23:14,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 12:23:14,577 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 12:23:14,577 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 12:23:14,578 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label25.c [2023-12-22 12:23:15,705 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 12:23:15,962 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 12:23:15,962 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label25.c [2023-12-22 12:23:15,982 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3df53372/7197bb3895aa4cc5abd7c1944b0c4b9e/FLAGc197eb540 [2023-12-22 12:23:15,994 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3df53372/7197bb3895aa4cc5abd7c1944b0c4b9e [2023-12-22 12:23:15,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 12:23:15,998 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 12:23:15,999 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 12:23:15,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 12:23:16,003 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 12:23:16,004 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:23:15" (1/1) ... [2023-12-22 12:23:16,005 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7434db3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:16, skipping insertion in model container [2023-12-22 12:23:16,005 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:23:15" (1/1) ... [2023-12-22 12:23:16,067 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 12:23:16,238 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label25.c[6534,6547] [2023-12-22 12:23:16,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 12:23:16,452 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 12:23:16,491 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label25.c[6534,6547] [2023-12-22 12:23:16,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 12:23:16,620 INFO L206 MainTranslator]: Completed translation [2023-12-22 12:23:16,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:16 WrapperNode [2023-12-22 12:23:16,621 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 12:23:16,622 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 12:23:16,622 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 12:23:16,622 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 12:23:16,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:16" (1/1) ... [2023-12-22 12:23:16,656 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:16" (1/1) ... [2023-12-22 12:23:16,707 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 857 [2023-12-22 12:23:16,707 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 12:23:16,708 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 12:23:16,708 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 12:23:16,708 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 12:23:16,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:16" (1/1) ... [2023-12-22 12:23:16,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:16" (1/1) ... [2023-12-22 12:23:16,734 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:16" (1/1) ... [2023-12-22 12:23:16,756 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]. [2023-12-22 12:23:16,757 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:16" (1/1) ... [2023-12-22 12:23:16,757 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:16" (1/1) ... [2023-12-22 12:23:16,810 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:16" (1/1) ... [2023-12-22 12:23:16,827 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:16" (1/1) ... [2023-12-22 12:23:16,834 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:16" (1/1) ... [2023-12-22 12:23:16,851 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:16" (1/1) ... [2023-12-22 12:23:16,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 12:23:16,859 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 12:23:16,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 12:23:16,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 12:23:16,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:16" (1/1) ... [2023-12-22 12:23:16,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 12:23:16,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 12:23:16,897 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) [2023-12-22 12:23:16,924 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 [2023-12-22 12:23:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 12:23:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 12:23:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 12:23:16,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 12:23:16,999 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 12:23:17,001 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 12:23:20,035 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 12:23:20,096 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 12:23:20,097 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 12:23:20,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:23:20 BoogieIcfgContainer [2023-12-22 12:23:20,097 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 12:23:20,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 12:23:20,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 12:23:20,103 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 12:23:20,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:23:15" (1/3) ... [2023-12-22 12:23:20,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb6d5ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:23:20, skipping insertion in model container [2023-12-22 12:23:20,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:23:16" (2/3) ... [2023-12-22 12:23:20,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb6d5ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:23:20, skipping insertion in model container [2023-12-22 12:23:20,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:23:20" (3/3) ... [2023-12-22 12:23:20,106 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label25.c [2023-12-22 12:23:20,121 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 12:23:20,122 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 12:23:20,180 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 12:23:20,185 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;@271e82f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 12:23:20,185 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 12:23:20,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 181 states have (on average 1.988950276243094) internal successors, (360), 182 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:20,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-22 12:23:20,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:23:20,196 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] [2023-12-22 12:23:20,196 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:23:20,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:23:20,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1920910795, now seen corresponding path program 1 times [2023-12-22 12:23:20,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:23:20,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980019217] [2023-12-22 12:23:20,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:23:20,215 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 [2023-12-22 12:23:20,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:23:20,226 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) [2023-12-22 12:23:20,234 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 [2023-12-22 12:23:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:23:20,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 12:23:20,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:23:20,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 12:23:20,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:23:20,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:23:20,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980019217] [2023-12-22 12:23:20,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980019217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:23:20,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:23:20,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 12:23:20,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347114895] [2023-12-22 12:23:20,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:23:20,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 12:23:20,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:23:20,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 12:23:20,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 12:23:20,389 INFO L87 Difference]: Start difference. First operand has 183 states, 181 states have (on average 1.988950276243094) internal successors, (360), 182 states have internal predecessors, (360), 0 states have call successors, (0), 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 2 states, 2 states have (on average 31.5) internal successors, (63), 2 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) [2023-12-22 12:23:20,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:23:20,441 INFO L93 Difference]: Finished difference Result 365 states and 719 transitions. [2023-12-22 12:23:20,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 12:23:20,445 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 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 [2023-12-22 12:23:20,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:23:20,457 INFO L225 Difference]: With dead ends: 365 [2023-12-22 12:23:20,457 INFO L226 Difference]: Without dead ends: 181 [2023-12-22 12:23:20,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 12:23:20,465 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 12:23:20,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 295 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 12:23:20,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-22 12:23:20,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-12-22 12:23:20,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.6388888888888888) internal successors, (295), 180 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:20,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 295 transitions. [2023-12-22 12:23:20,508 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 295 transitions. Word has length 63 [2023-12-22 12:23:20,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:23:20,509 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 295 transitions. [2023-12-22 12:23:20,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 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) [2023-12-22 12:23:20,509 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 295 transitions. [2023-12-22 12:23:20,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-22 12:23:20,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:23:20,511 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] [2023-12-22 12:23:20,516 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 [2023-12-22 12:23:20,713 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 [2023-12-22 12:23:20,714 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:23:20,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:23:20,714 INFO L85 PathProgramCache]: Analyzing trace with hash 772826375, now seen corresponding path program 1 times [2023-12-22 12:23:20,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:23:20,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866842716] [2023-12-22 12:23:20,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:23:20,716 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 [2023-12-22 12:23:20,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:23:20,717 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) [2023-12-22 12:23:20,724 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 [2023-12-22 12:23:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:23:20,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 12:23:20,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:23:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 12:23:20,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:23:20,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:23:20,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866842716] [2023-12-22 12:23:20,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866842716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:23:20,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:23:20,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 12:23:20,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598637391] [2023-12-22 12:23:20,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:23:20,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:23:20,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:23:20,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:23:20,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:23:20,890 INFO L87 Difference]: Start difference. First operand 181 states and 295 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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) [2023-12-22 12:23:23,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:23:23,709 INFO L93 Difference]: Finished difference Result 539 states and 882 transitions. [2023-12-22 12:23:23,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:23:23,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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 [2023-12-22 12:23:23,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:23:23,711 INFO L225 Difference]: With dead ends: 539 [2023-12-22 12:23:23,712 INFO L226 Difference]: Without dead ends: 359 [2023-12-22 12:23:23,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:23:23,714 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 135 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-22 12:23:23,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 87 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-22 12:23:23,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-12-22 12:23:23,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2023-12-22 12:23:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.4217877094972067) internal successors, (509), 358 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 509 transitions. [2023-12-22 12:23:23,741 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 509 transitions. Word has length 63 [2023-12-22 12:23:23,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:23:23,741 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 509 transitions. [2023-12-22 12:23:23,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 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) [2023-12-22 12:23:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 509 transitions. [2023-12-22 12:23:23,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-22 12:23:23,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:23:23,745 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:23:23,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-22 12:23:23,947 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 [2023-12-22 12:23:23,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:23:23,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:23:23,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1654021143, now seen corresponding path program 1 times [2023-12-22 12:23:23,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:23:23,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961864441] [2023-12-22 12:23:23,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:23:23,949 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 [2023-12-22 12:23:23,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:23:23,950 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) [2023-12-22 12:23:23,952 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 [2023-12-22 12:23:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:23:24,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 12:23:24,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:23:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 12:23:24,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:23:24,414 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:23:24,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961864441] [2023-12-22 12:23:24,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961864441] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:23:24,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:23:24,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 12:23:24,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279828945] [2023-12-22 12:23:24,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:23:24,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:23:24,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:23:24,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:23:24,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:23:24,425 INFO L87 Difference]: Start difference. First operand 359 states and 509 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:26,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:23:26,558 INFO L93 Difference]: Finished difference Result 895 states and 1231 transitions. [2023-12-22 12:23:26,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:23:26,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2023-12-22 12:23:26,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:23:26,561 INFO L225 Difference]: With dead ends: 895 [2023-12-22 12:23:26,562 INFO L226 Difference]: Without dead ends: 537 [2023-12-22 12:23:26,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:23:26,564 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 112 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-22 12:23:26,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 112 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-22 12:23:26,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2023-12-22 12:23:26,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2023-12-22 12:23:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.3041044776119404) internal successors, (699), 536 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:26,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 699 transitions. [2023-12-22 12:23:26,581 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 699 transitions. Word has length 132 [2023-12-22 12:23:26,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:23:26,581 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 699 transitions. [2023-12-22 12:23:26,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:26,581 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 699 transitions. [2023-12-22 12:23:26,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-22 12:23:26,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:23:26,587 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:23:26,597 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 [2023-12-22 12:23:26,791 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 [2023-12-22 12:23:26,792 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:23:26,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:23:26,792 INFO L85 PathProgramCache]: Analyzing trace with hash 8520463, now seen corresponding path program 1 times [2023-12-22 12:23:26,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:23:26,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413652685] [2023-12-22 12:23:26,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:23:26,794 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 [2023-12-22 12:23:26,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:23:26,795 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) [2023-12-22 12:23:26,805 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 [2023-12-22 12:23:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:23:26,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 12:23:26,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:23:27,113 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 12:23:27,114 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:23:27,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:23:27,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413652685] [2023-12-22 12:23:27,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413652685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:23:27,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:23:27,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 12:23:27,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147014669] [2023-12-22 12:23:27,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:23:27,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:23:27,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:23:27,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:23:27,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:23:27,116 INFO L87 Difference]: Start difference. First operand 537 states and 699 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:30,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:23:30,052 INFO L93 Difference]: Finished difference Result 1251 states and 1690 transitions. [2023-12-22 12:23:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:23:30,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2023-12-22 12:23:30,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:23:30,057 INFO L225 Difference]: With dead ends: 1251 [2023-12-22 12:23:30,057 INFO L226 Difference]: Without dead ends: 893 [2023-12-22 12:23:30,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:23:30,059 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 76 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-22 12:23:30,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 117 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-22 12:23:30,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2023-12-22 12:23:30,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 893. [2023-12-22 12:23:30,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 892 states have (on average 1.2443946188340806) internal successors, (1110), 892 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:30,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1110 transitions. [2023-12-22 12:23:30,081 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1110 transitions. Word has length 168 [2023-12-22 12:23:30,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:23:30,082 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1110 transitions. [2023-12-22 12:23:30,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:30,082 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1110 transitions. [2023-12-22 12:23:30,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-22 12:23:30,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:23:30,089 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:23:30,100 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 [2023-12-22 12:23:30,297 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 [2023-12-22 12:23:30,297 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:23:30,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:23:30,298 INFO L85 PathProgramCache]: Analyzing trace with hash -872314723, now seen corresponding path program 1 times [2023-12-22 12:23:30,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:23:30,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788732488] [2023-12-22 12:23:30,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:23:30,299 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 [2023-12-22 12:23:30,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:23:30,300 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) [2023-12-22 12:23:30,301 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 [2023-12-22 12:23:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:23:30,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 12:23:30,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:23:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-22 12:23:31,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:23:31,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:23:31,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788732488] [2023-12-22 12:23:31,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788732488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:23:31,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:23:31,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 12:23:31,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820929081] [2023-12-22 12:23:31,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:23:31,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 12:23:31,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:23:31,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 12:23:31,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 12:23:31,047 INFO L87 Difference]: Start difference. First operand 893 states and 1110 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:33,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:23:33,353 INFO L93 Difference]: Finished difference Result 1280 states and 1660 transitions. [2023-12-22 12:23:33,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 12:23:33,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 212 [2023-12-22 12:23:33,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:23:33,357 INFO L225 Difference]: With dead ends: 1280 [2023-12-22 12:23:33,357 INFO L226 Difference]: Without dead ends: 715 [2023-12-22 12:23:33,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 12:23:33,358 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 101 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-22 12:23:33,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 117 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-22 12:23:33,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2023-12-22 12:23:33,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2023-12-22 12:23:33,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 1.2338935574229692) internal successors, (881), 714 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:33,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 881 transitions. [2023-12-22 12:23:33,374 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 881 transitions. Word has length 212 [2023-12-22 12:23:33,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:23:33,375 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 881 transitions. [2023-12-22 12:23:33,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:33,375 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 881 transitions. [2023-12-22 12:23:33,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-12-22 12:23:33,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:23:33,378 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-22 12:23:33,384 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 [2023-12-22 12:23:33,585 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 [2023-12-22 12:23:33,585 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:23:33,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:23:33,586 INFO L85 PathProgramCache]: Analyzing trace with hash -556732924, now seen corresponding path program 1 times [2023-12-22 12:23:33,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:23:33,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853627916] [2023-12-22 12:23:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:23:33,587 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 [2023-12-22 12:23:33,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:23:33,588 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) [2023-12-22 12:23:33,589 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 [2023-12-22 12:23:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:23:33,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 12:23:33,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:23:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-12-22 12:23:34,028 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:23:34,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:23:34,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853627916] [2023-12-22 12:23:34,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853627916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:23:34,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:23:34,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 12:23:34,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796245297] [2023-12-22 12:23:34,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:23:34,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:23:34,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:23:34,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:23:34,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:23:34,031 INFO L87 Difference]: Start difference. First operand 715 states and 881 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:36,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:23:36,725 INFO L93 Difference]: Finished difference Result 1429 states and 1922 transitions. [2023-12-22 12:23:36,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:23:36,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2023-12-22 12:23:36,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:23:36,729 INFO L225 Difference]: With dead ends: 1429 [2023-12-22 12:23:36,729 INFO L226 Difference]: Without dead ends: 1071 [2023-12-22 12:23:36,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:23:36,731 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 76 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-22 12:23:36,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 98 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-22 12:23:36,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2023-12-22 12:23:36,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1071. [2023-12-22 12:23:36,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 1.2345794392523364) internal successors, (1321), 1070 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:36,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1321 transitions. [2023-12-22 12:23:36,749 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1321 transitions. Word has length 274 [2023-12-22 12:23:36,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:23:36,750 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1321 transitions. [2023-12-22 12:23:36,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:36,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1321 transitions. [2023-12-22 12:23:36,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-12-22 12:23:36,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:23:36,754 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:23:36,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-22 12:23:36,960 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 [2023-12-22 12:23:36,960 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:23:36,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:23:36,961 INFO L85 PathProgramCache]: Analyzing trace with hash 2023680046, now seen corresponding path program 1 times [2023-12-22 12:23:36,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:23:36,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890426693] [2023-12-22 12:23:36,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:23:36,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:23:36,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:23:36,963 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) [2023-12-22 12:23:37,035 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 [2023-12-22 12:23:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:23:37,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 12:23:37,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:23:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 185 proven. 135 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-22 12:23:37,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:23:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-22 12:23:38,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:23:38,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890426693] [2023-12-22 12:23:38,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890426693] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 12:23:38,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 12:23:38,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 12:23:38,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355005208] [2023-12-22 12:23:38,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:23:38,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:23:38,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:23:38,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:23:38,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 12:23:38,411 INFO L87 Difference]: Start difference. First operand 1071 states and 1321 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:45,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:23:45,822 INFO L93 Difference]: Finished difference Result 2141 states and 2813 transitions. [2023-12-22 12:23:45,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:23:45,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 342 [2023-12-22 12:23:45,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:23:45,828 INFO L225 Difference]: With dead ends: 2141 [2023-12-22 12:23:45,828 INFO L226 Difference]: Without dead ends: 1427 [2023-12-22 12:23:45,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 679 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 12:23:45,830 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 134 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-12-22 12:23:45,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 55 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-12-22 12:23:45,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2023-12-22 12:23:45,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1427. [2023-12-22 12:23:45,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1426 states have (on average 1.2398316970546985) internal successors, (1768), 1426 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:45,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 1768 transitions. [2023-12-22 12:23:45,889 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 1768 transitions. Word has length 342 [2023-12-22 12:23:45,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:23:45,890 INFO L495 AbstractCegarLoop]: Abstraction has 1427 states and 1768 transitions. [2023-12-22 12:23:45,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:45,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 1768 transitions. [2023-12-22 12:23:45,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2023-12-22 12:23:45,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:23:45,906 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:23:45,928 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 [2023-12-22 12:23:46,112 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 [2023-12-22 12:23:46,113 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:23:46,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:23:46,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2101852464, now seen corresponding path program 1 times [2023-12-22 12:23:46,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:23:46,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995925513] [2023-12-22 12:23:46,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:23:46,115 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 [2023-12-22 12:23:46,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:23:46,133 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) [2023-12-22 12:23:46,180 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 [2023-12-22 12:23:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:23:46,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 12:23:46,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:23:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 185 proven. 159 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-22 12:23:46,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:23:47,878 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-22 12:23:47,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:23:47,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995925513] [2023-12-22 12:23:47,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995925513] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 12:23:47,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 12:23:47,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 12:23:47,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481297008] [2023-12-22 12:23:47,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:23:47,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:23:47,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:23:47,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:23:47,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 12:23:47,881 INFO L87 Difference]: Start difference. First operand 1427 states and 1768 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:54,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:23:54,693 INFO L93 Difference]: Finished difference Result 3209 states and 4155 transitions. [2023-12-22 12:23:54,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:23:54,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 354 [2023-12-22 12:23:54,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:23:54,700 INFO L225 Difference]: With dead ends: 3209 [2023-12-22 12:23:54,700 INFO L226 Difference]: Without dead ends: 2139 [2023-12-22 12:23:54,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 703 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 12:23:54,703 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 112 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-22 12:23:54,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 246 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-22 12:23:54,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2023-12-22 12:23:54,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2139. [2023-12-22 12:23:54,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2139 states, 2138 states have (on average 1.2483629560336764) internal successors, (2669), 2138 states have internal predecessors, (2669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:54,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 2669 transitions. [2023-12-22 12:23:54,778 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 2669 transitions. Word has length 354 [2023-12-22 12:23:54,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:23:54,779 INFO L495 AbstractCegarLoop]: Abstraction has 2139 states and 2669 transitions. [2023-12-22 12:23:54,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:23:54,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 2669 transitions. [2023-12-22 12:23:54,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-12-22 12:23:54,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:23:54,781 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:23:54,799 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 [2023-12-22 12:23:55,003 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 [2023-12-22 12:23:55,004 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:23:55,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:23:55,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1355452328, now seen corresponding path program 1 times [2023-12-22 12:23:55,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:23:55,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490444733] [2023-12-22 12:23:55,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:23:55,006 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 [2023-12-22 12:23:55,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:23:55,007 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) [2023-12-22 12:23:55,059 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 [2023-12-22 12:23:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:23:55,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 12:23:55,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:23:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 99 proven. 277 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-22 12:23:57,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:24:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 347 proven. 29 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-22 12:24:05,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:24:05,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490444733] [2023-12-22 12:24:05,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490444733] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:24:05,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:24:05,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-22 12:24:05,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418604159] [2023-12-22 12:24:05,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:24:05,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 12:24:05,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:24:05,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 12:24:05,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-22 12:24:05,050 INFO L87 Difference]: Start difference. First operand 2139 states and 2669 transitions. Second operand has 8 states, 8 states have (on average 62.5) internal successors, (500), 7 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:24:40,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:24:43,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:24:45,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:24:51,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:25:01,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:25:01,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:25:01,859 INFO L93 Difference]: Finished difference Result 5817 states and 7420 transitions. [2023-12-22 12:25:01,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 12:25:01,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 62.5) internal successors, (500), 7 states have internal predecessors, (500), 0 states have call successors, (0), 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 370 [2023-12-22 12:25:01,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:25:01,884 INFO L225 Difference]: With dead ends: 5817 [2023-12-22 12:25:01,885 INFO L226 Difference]: Without dead ends: 3919 [2023-12-22 12:25:01,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-22 12:25:01,897 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 518 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.4s IncrementalHoareTripleChecker+Time [2023-12-22 12:25:01,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 50 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 56.4s Time] [2023-12-22 12:25:01,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2023-12-22 12:25:02,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 3741. [2023-12-22 12:25:02,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3741 states, 3740 states have (on average 1.1101604278074866) internal successors, (4152), 3740 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:25:02,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3741 states to 3741 states and 4152 transitions. [2023-12-22 12:25:02,055 INFO L78 Accepts]: Start accepts. Automaton has 3741 states and 4152 transitions. Word has length 370 [2023-12-22 12:25:02,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:25:02,055 INFO L495 AbstractCegarLoop]: Abstraction has 3741 states and 4152 transitions. [2023-12-22 12:25:02,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 62.5) internal successors, (500), 7 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:25:02,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 4152 transitions. [2023-12-22 12:25:02,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2023-12-22 12:25:02,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:25:02,079 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:25:02,095 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 (10)] Forceful destruction successful, exit code 0 [2023-12-22 12:25:02,285 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 [2023-12-22 12:25:02,286 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:25:02,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:25:02,287 INFO L85 PathProgramCache]: Analyzing trace with hash 828548044, now seen corresponding path program 1 times [2023-12-22 12:25:02,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:25:02,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303495694] [2023-12-22 12:25:02,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:25:02,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:25:02,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:25:02,308 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) [2023-12-22 12:25:02,346 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 [2023-12-22 12:25:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:25:02,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-22 12:25:02,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:25:12,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 413 proven. 898 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-22 12:25:12,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:25:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 1043 proven. 268 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-22 12:25:40,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:25:40,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303495694] [2023-12-22 12:25:40,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303495694] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:25:40,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:25:40,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-12-22 12:25:40,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048301467] [2023-12-22 12:25:40,328 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:25:40,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-22 12:25:40,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:25:40,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-22 12:25:40,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2023-12-22 12:25:40,345 INFO L87 Difference]: Start difference. First operand 3741 states and 4152 transitions. Second operand has 21 states, 21 states have (on average 54.333333333333336) internal successors, (1141), 21 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:25:46,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:25:48,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:25:48,791 INFO L93 Difference]: Finished difference Result 7107 states and 7935 transitions. [2023-12-22 12:25:48,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-22 12:25:48,793 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 54.333333333333336) internal successors, (1141), 21 states have internal predecessors, (1141), 0 states have call successors, (0), 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 717 [2023-12-22 12:25:48,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:25:48,816 INFO L225 Difference]: With dead ends: 7107 [2023-12-22 12:25:48,816 INFO L226 Difference]: Without dead ends: 4079 [2023-12-22 12:25:48,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1432 GetRequests, 1413 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2023-12-22 12:25:48,835 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 228 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 3481 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 3521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-22 12:25:48,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 94 Invalid, 3521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3481 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-12-22 12:25:48,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4079 states. [2023-12-22 12:25:48,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4079 to 3554. [2023-12-22 12:25:48,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 1.1142696312974951) internal successors, (3959), 3553 states have internal predecessors, (3959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:25:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 3959 transitions. [2023-12-22 12:25:48,964 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 3959 transitions. Word has length 717 [2023-12-22 12:25:48,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:25:48,964 INFO L495 AbstractCegarLoop]: Abstraction has 3554 states and 3959 transitions. [2023-12-22 12:25:48,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 54.333333333333336) internal successors, (1141), 21 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:25:48,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 3959 transitions. [2023-12-22 12:25:48,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2023-12-22 12:25:48,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:25:48,971 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:25:48,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-22 12:25:49,183 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 [2023-12-22 12:25:49,183 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:25:49,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:25:49,184 INFO L85 PathProgramCache]: Analyzing trace with hash 603921945, now seen corresponding path program 1 times [2023-12-22 12:25:49,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:25:49,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727250043] [2023-12-22 12:25:49,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:25:49,187 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 [2023-12-22 12:25:49,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:25:49,189 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) [2023-12-22 12:25:49,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-22 12:25:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:25:49,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 12:25:49,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:25:55,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 856 proven. 420 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-12-22 12:25:55,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:26:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 1240 proven. 36 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-12-22 12:26:10,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:26:10,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727250043] [2023-12-22 12:26:10,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727250043] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:26:10,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:26:10,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-22 12:26:10,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691834280] [2023-12-22 12:26:10,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:26:10,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-22 12:26:10,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:26:10,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-22 12:26:10,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2023-12-22 12:26:10,166 INFO L87 Difference]: Start difference. First operand 3554 states and 3959 transitions. Second operand has 20 states, 20 states have (on average 47.8) internal successors, (956), 20 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:26:23,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:26:23,227 INFO L93 Difference]: Finished difference Result 7435 states and 8263 transitions. [2023-12-22 12:26:23,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-22 12:26:23,228 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 47.8) internal successors, (956), 20 states have internal predecessors, (956), 0 states have call successors, (0), 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 735 [2023-12-22 12:26:23,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:26:23,248 INFO L225 Difference]: With dead ends: 7435 [2023-12-22 12:26:23,248 INFO L226 Difference]: Without dead ends: 3864 [2023-12-22 12:26:23,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1482 GetRequests, 1454 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=264, Invalid=606, Unknown=0, NotChecked=0, Total=870 [2023-12-22 12:26:23,260 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 1736 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 6215 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 6379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 6215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-12-22 12:26:23,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1736 Valid, 96 Invalid, 6379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 6215 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2023-12-22 12:26:23,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3864 states. [2023-12-22 12:26:23,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3864 to 3531. [2023-12-22 12:26:23,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3531 states, 3530 states have (on average 1.0886685552407933) internal successors, (3843), 3530 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:26:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3531 states to 3531 states and 3843 transitions. [2023-12-22 12:26:23,379 INFO L78 Accepts]: Start accepts. Automaton has 3531 states and 3843 transitions. Word has length 735 [2023-12-22 12:26:23,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:26:23,380 INFO L495 AbstractCegarLoop]: Abstraction has 3531 states and 3843 transitions. [2023-12-22 12:26:23,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 47.8) internal successors, (956), 20 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:26:23,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3531 states and 3843 transitions. [2023-12-22 12:26:23,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2023-12-22 12:26:23,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:26:23,387 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:26:23,400 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 [2023-12-22 12:26:23,593 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 [2023-12-22 12:26:23,594 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:26:23,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:26:23,595 INFO L85 PathProgramCache]: Analyzing trace with hash -751094247, now seen corresponding path program 1 times [2023-12-22 12:26:23,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:26:23,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067589097] [2023-12-22 12:26:23,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:26:23,598 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 [2023-12-22 12:26:23,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:26:23,599 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) [2023-12-22 12:26:23,640 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 [2023-12-22 12:26:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:26:23,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-22 12:26:23,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:26:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1888 backedges. 506 proven. 1115 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-12-22 12:26:31,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:28:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1888 backedges. 1613 proven. 0 refuted. 8 times theorem prover too weak. 267 trivial. 0 not checked. [2023-12-22 12:28:19,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:28:19,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067589097] [2023-12-22 12:28:19,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067589097] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:28:19,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:28:19,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2023-12-22 12:28:19,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380680645] [2023-12-22 12:28:19,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:28:19,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-22 12:28:19,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:28:19,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-22 12:28:19,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=298, Unknown=2, NotChecked=0, Total=462 [2023-12-22 12:28:19,655 INFO L87 Difference]: Start difference. First operand 3531 states and 3843 transitions. Second operand has 22 states, 22 states have (on average 52.36363636363637) internal successors, (1152), 22 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:28:32,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:28:36,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:28:40,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:28:44,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:28:47,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:28:53,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.43s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:28:53,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:28:53,655 INFO L93 Difference]: Finished difference Result 7147 states and 7780 transitions. [2023-12-22 12:28:53,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-22 12:28:53,656 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 52.36363636363637) internal successors, (1152), 22 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 812 [2023-12-22 12:28:53,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:28:53,667 INFO L225 Difference]: With dead ends: 7147 [2023-12-22 12:28:53,668 INFO L226 Difference]: Without dead ends: 4011 [2023-12-22 12:28:53,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1624 GetRequests, 1601 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=183, Invalid=321, Unknown=2, NotChecked=0, Total=506 [2023-12-22 12:28:53,671 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 280 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4302 mSolverCounterSat, 29 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 4334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4302 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2023-12-22 12:28:53,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 101 Invalid, 4334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 4302 Invalid, 3 Unknown, 0 Unchecked, 27.5s Time] [2023-12-22 12:28:53,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2023-12-22 12:28:53,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 3603. [2023-12-22 12:28:53,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3603 states, 3602 states have (on average 1.0868961687951137) internal successors, (3915), 3602 states have internal predecessors, (3915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:28:53,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3603 states to 3603 states and 3915 transitions. [2023-12-22 12:28:53,720 INFO L78 Accepts]: Start accepts. Automaton has 3603 states and 3915 transitions. Word has length 812 [2023-12-22 12:28:53,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:28:53,721 INFO L495 AbstractCegarLoop]: Abstraction has 3603 states and 3915 transitions. [2023-12-22 12:28:53,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 52.36363636363637) internal successors, (1152), 22 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:28:53,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3603 states and 3915 transitions. [2023-12-22 12:28:53,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2023-12-22 12:28:53,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:28:53,730 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:28:53,738 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 (13)] Ended with exit code 0 [2023-12-22 12:28:53,935 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 [2023-12-22 12:28:53,936 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:28:53,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:28:53,936 INFO L85 PathProgramCache]: Analyzing trace with hash 846229433, now seen corresponding path program 1 times [2023-12-22 12:28:53,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:28:53,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151508747] [2023-12-22 12:28:53,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:28:53,939 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 [2023-12-22 12:28:53,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:28:53,940 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) [2023-12-22 12:28:53,941 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 [2023-12-22 12:28:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:28:54,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 12:28:54,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:28:55,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 0 proven. 2010 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2023-12-22 12:28:55,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:28:57,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 1375 proven. 62 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2023-12-22 12:28:57,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:28:57,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151508747] [2023-12-22 12:28:57,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151508747] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:28:57,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:28:57,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2023-12-22 12:28:57,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885140059] [2023-12-22 12:28:57,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:28:57,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 12:28:57,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:28:57,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 12:28:57,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-22 12:28:57,990 INFO L87 Difference]: Start difference. First operand 3603 states and 3915 transitions. Second operand has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:29:10,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:29:10,955 INFO L93 Difference]: Finished difference Result 7966 states and 8743 transitions. [2023-12-22 12:29:10,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 12:29:10,956 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 0 states have call successors, (0), 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 884 [2023-12-22 12:29:10,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:29:10,970 INFO L225 Difference]: With dead ends: 7966 [2023-12-22 12:29:10,970 INFO L226 Difference]: Without dead ends: 4898 [2023-12-22 12:29:10,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1768 GetRequests, 1759 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-22 12:29:10,974 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 546 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 3760 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 3903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 3760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-12-22 12:29:10,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 71 Invalid, 3903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 3760 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-12-22 12:29:10,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2023-12-22 12:29:11,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 4108. [2023-12-22 12:29:11,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4108 states, 4107 states have (on average 1.0679327976625275) internal successors, (4386), 4107 states have internal predecessors, (4386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:29:11,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 4386 transitions. [2023-12-22 12:29:11,030 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 4386 transitions. Word has length 884 [2023-12-22 12:29:11,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:29:11,031 INFO L495 AbstractCegarLoop]: Abstraction has 4108 states and 4386 transitions. [2023-12-22 12:29:11,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:29:11,031 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 4386 transitions. [2023-12-22 12:29:11,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2023-12-22 12:29:11,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:29:11,042 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:29:11,052 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 [2023-12-22 12:29:11,249 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 [2023-12-22 12:29:11,250 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:29:11,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:29:11,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1351445918, now seen corresponding path program 1 times [2023-12-22 12:29:11,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:29:11,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001843050] [2023-12-22 12:29:11,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:29:11,253 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 [2023-12-22 12:29:11,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:29:11,255 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) [2023-12-22 12:29:11,260 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 [2023-12-22 12:29:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:29:11,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 12:29:11,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:29:12,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2986 backedges. 1038 proven. 0 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2023-12-22 12:29:12,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:29:12,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:29:12,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001843050] [2023-12-22 12:29:12,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001843050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:29:12,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:29:12,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 12:29:12,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487080956] [2023-12-22 12:29:12,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:29:12,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 12:29:12,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:29:12,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 12:29:12,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 12:29:12,893 INFO L87 Difference]: Start difference. First operand 4108 states and 4386 transitions. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:29:16,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:29:16,060 INFO L93 Difference]: Finished difference Result 8422 states and 9100 transitions. [2023-12-22 12:29:16,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 12:29:16,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 963 [2023-12-22 12:29:16,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:29:16,072 INFO L225 Difference]: With dead ends: 8422 [2023-12-22 12:29:16,073 INFO L226 Difference]: Without dead ends: 5354 [2023-12-22 12:29:16,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 962 GetRequests, 960 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 12:29:16,077 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 145 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-22 12:29:16,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 14 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-22 12:29:16,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5354 states. [2023-12-22 12:29:16,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5354 to 5176. [2023-12-22 12:29:16,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 5175 states have (on average 1.048695652173913) internal successors, (5427), 5175 states have internal predecessors, (5427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:29:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 5427 transitions. [2023-12-22 12:29:16,135 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 5427 transitions. Word has length 963 [2023-12-22 12:29:16,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:29:16,136 INFO L495 AbstractCegarLoop]: Abstraction has 5176 states and 5427 transitions. [2023-12-22 12:29:16,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:29:16,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 5427 transitions. [2023-12-22 12:29:16,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2023-12-22 12:29:16,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:29:16,148 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 12:29:16,157 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 [2023-12-22 12:29:16,356 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 [2023-12-22 12:29:16,357 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:29:16,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:29:16,357 INFO L85 PathProgramCache]: Analyzing trace with hash 435226662, now seen corresponding path program 1 times [2023-12-22 12:29:16,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:29:16,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110253287] [2023-12-22 12:29:16,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:29:16,361 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 [2023-12-22 12:29:16,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:29:16,366 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) [2023-12-22 12:29:16,374 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 [2023-12-22 12:29:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:29:16,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 12:29:16,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:29:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3146 backedges. 1838 proven. 0 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2023-12-22 12:29:18,171 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:29:18,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:29:18,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110253287] [2023-12-22 12:29:18,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110253287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:29:18,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:29:18,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 12:29:18,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724255886] [2023-12-22 12:29:18,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:29:18,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 12:29:18,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:29:18,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 12:29:18,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 12:29:18,173 INFO L87 Difference]: Start difference. First operand 5176 states and 5427 transitions. Second operand has 4 states, 4 states have (on average 96.25) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:29:21,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:29:21,613 INFO L93 Difference]: Finished difference Result 9490 states and 9991 transitions. [2023-12-22 12:29:21,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 12:29:21,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 96.25) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 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 988 [2023-12-22 12:29:21,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:29:21,639 INFO L225 Difference]: With dead ends: 9490 [2023-12-22 12:29:21,639 INFO L226 Difference]: Without dead ends: 5354 [2023-12-22 12:29:21,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 987 GetRequests, 985 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 12:29:21,646 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 65 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-22 12:29:21,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 54 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-22 12:29:21,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5354 states. [2023-12-22 12:29:21,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5354 to 5354. [2023-12-22 12:29:21,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5354 states, 5353 states have (on average 1.0476368391556137) internal successors, (5608), 5353 states have internal predecessors, (5608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:29:21,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 5608 transitions. [2023-12-22 12:29:21,787 INFO L78 Accepts]: Start accepts. Automaton has 5354 states and 5608 transitions. Word has length 988 [2023-12-22 12:29:21,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:29:21,787 INFO L495 AbstractCegarLoop]: Abstraction has 5354 states and 5608 transitions. [2023-12-22 12:29:21,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.25) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:29:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 5354 states and 5608 transitions. [2023-12-22 12:29:21,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2023-12-22 12:29:21,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:29:21,849 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:29:21,879 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 [2023-12-22 12:29:22,050 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 [2023-12-22 12:29:22,050 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:29:22,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:29:22,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2038655591, now seen corresponding path program 1 times [2023-12-22 12:29:22,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:29:22,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195191996] [2023-12-22 12:29:22,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:29:22,055 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 [2023-12-22 12:29:22,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:29:22,056 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) [2023-12-22 12:29:22,083 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 [2023-12-22 12:29:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:29:22,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 12:29:22,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:29:27,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3827 backedges. 557 proven. 2820 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-12-22 12:29:27,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:29:43,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3827 backedges. 557 proven. 2247 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2023-12-22 12:29:43,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:29:43,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195191996] [2023-12-22 12:29:43,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195191996] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:29:43,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:29:43,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2023-12-22 12:29:43,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547954091] [2023-12-22 12:29:43,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:29:43,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-22 12:29:43,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:29:43,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-22 12:29:43,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-22 12:29:43,011 INFO L87 Difference]: Start difference. First operand 5354 states and 5608 transitions. Second operand has 11 states, 11 states have (on average 113.45454545454545) internal successors, (1248), 10 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:30:17,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:30:17,860 INFO L93 Difference]: Finished difference Result 11348 states and 11973 transitions. [2023-12-22 12:30:17,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-22 12:30:17,861 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 113.45454545454545) internal successors, (1248), 10 states have internal predecessors, (1248), 0 states have call successors, (0), 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 1077 [2023-12-22 12:30:17,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:30:17,898 INFO L225 Difference]: With dead ends: 11348 [2023-12-22 12:30:17,899 INFO L226 Difference]: Without dead ends: 7034 [2023-12-22 12:30:17,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2155 GetRequests, 2143 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2023-12-22 12:30:17,905 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 880 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 5368 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 5576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 5368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.8s IncrementalHoareTripleChecker+Time [2023-12-22 12:30:17,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 99 Invalid, 5576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 5368 Invalid, 0 Unknown, 0 Unchecked, 33.8s Time] [2023-12-22 12:30:17,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7034 states. [2023-12-22 12:30:18,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7034 to 6244. [2023-12-22 12:30:18,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6244 states, 6243 states have (on average 1.0470927438731379) internal successors, (6537), 6243 states have internal predecessors, (6537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:30:18,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6244 states to 6244 states and 6537 transitions. [2023-12-22 12:30:18,096 INFO L78 Accepts]: Start accepts. Automaton has 6244 states and 6537 transitions. Word has length 1077 [2023-12-22 12:30:18,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:30:18,097 INFO L495 AbstractCegarLoop]: Abstraction has 6244 states and 6537 transitions. [2023-12-22 12:30:18,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 113.45454545454545) internal successors, (1248), 10 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:30:18,099 INFO L276 IsEmpty]: Start isEmpty. Operand 6244 states and 6537 transitions. [2023-12-22 12:30:18,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1313 [2023-12-22 12:30:18,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:30:18,129 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:30:18,144 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 [2023-12-22 12:30:18,339 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 [2023-12-22 12:30:18,340 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:30:18,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:30:18,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2013866041, now seen corresponding path program 1 times [2023-12-22 12:30:18,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:30:18,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772904046] [2023-12-22 12:30:18,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:30:18,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:30:18,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:30:18,346 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) [2023-12-22 12:30:18,372 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 [2023-12-22 12:30:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:30:18,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 12:30:18,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:30:19,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5195 backedges. 2697 proven. 0 refuted. 0 times theorem prover too weak. 2498 trivial. 0 not checked. [2023-12-22 12:30:19,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:30:19,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:30:19,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772904046] [2023-12-22 12:30:19,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772904046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:30:19,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:30:19,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 12:30:19,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798712892] [2023-12-22 12:30:19,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:30:19,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:30:19,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:30:19,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:30:19,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:30:19,653 INFO L87 Difference]: Start difference. First operand 6244 states and 6537 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:30:23,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:30:23,114 INFO L93 Difference]: Finished difference Result 7314 states and 7714 transitions. [2023-12-22 12:30:23,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:30:23,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 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 1312 [2023-12-22 12:30:23,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:30:23,144 INFO L225 Difference]: With dead ends: 7314 [2023-12-22 12:30:23,144 INFO L226 Difference]: Without dead ends: 7312 [2023-12-22 12:30:23,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1311 GetRequests, 1310 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:30:23,146 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-22 12:30:23,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 236 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-22 12:30:23,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7312 states. [2023-12-22 12:30:23,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7312 to 6778. [2023-12-22 12:30:23,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6778 states, 6777 states have (on average 1.0563671240962078) internal successors, (7159), 6777 states have internal predecessors, (7159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:30:23,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6778 states to 6778 states and 7159 transitions. [2023-12-22 12:30:23,312 INFO L78 Accepts]: Start accepts. Automaton has 6778 states and 7159 transitions. Word has length 1312 [2023-12-22 12:30:23,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:30:23,313 INFO L495 AbstractCegarLoop]: Abstraction has 6778 states and 7159 transitions. [2023-12-22 12:30:23,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:30:23,313 INFO L276 IsEmpty]: Start isEmpty. Operand 6778 states and 7159 transitions. [2023-12-22 12:30:23,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1412 [2023-12-22 12:30:23,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:30:23,357 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:30:23,374 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 [2023-12-22 12:30:23,567 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 [2023-12-22 12:30:23,567 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:30:23,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:30:23,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1249566, now seen corresponding path program 1 times [2023-12-22 12:30:23,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:30:23,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154089647] [2023-12-22 12:30:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:30:23,573 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 [2023-12-22 12:30:23,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:30:23,574 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) [2023-12-22 12:30:23,600 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 [2023-12-22 12:30:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:30:23,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:30:24,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:30:26,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6197 backedges. 0 proven. 5613 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2023-12-22 12:30:26,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:30:27,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6197 backedges. 2468 proven. 124 refuted. 0 times theorem prover too weak. 3605 trivial. 0 not checked. [2023-12-22 12:30:27,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:30:27,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154089647] [2023-12-22 12:30:27,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154089647] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:30:27,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:30:27,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2023-12-22 12:30:27,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092230603] [2023-12-22 12:30:27,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:30:27,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-22 12:30:27,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:30:27,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-22 12:30:27,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:30:27,782 INFO L87 Difference]: Start difference. First operand 6778 states and 7159 transitions. Second operand has 12 states, 12 states have (on average 108.0) internal successors, (1296), 12 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:30:47,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:30:47,188 INFO L93 Difference]: Finished difference Result 15312 states and 16362 transitions. [2023-12-22 12:30:47,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-22 12:30:47,200 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 108.0) internal successors, (1296), 12 states have internal predecessors, (1296), 0 states have call successors, (0), 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 1411 [2023-12-22 12:30:47,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:30:47,233 INFO L225 Difference]: With dead ends: 15312 [2023-12-22 12:30:47,233 INFO L226 Difference]: Without dead ends: 9170 [2023-12-22 12:30:47,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2828 GetRequests, 2814 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-12-22 12:30:47,241 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 833 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 10934 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 11082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 10934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2023-12-22 12:30:47,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 247 Invalid, 11082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 10934 Invalid, 0 Unknown, 0 Unchecked, 19.1s Time] [2023-12-22 12:30:47,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9170 states. [2023-12-22 12:30:47,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9170 to 6778. [2023-12-22 12:30:47,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6778 states, 6777 states have (on average 1.0543013132654566) internal successors, (7145), 6777 states have internal predecessors, (7145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:30:47,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6778 states to 6778 states and 7145 transitions. [2023-12-22 12:30:47,341 INFO L78 Accepts]: Start accepts. Automaton has 6778 states and 7145 transitions. Word has length 1411 [2023-12-22 12:30:47,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:30:47,341 INFO L495 AbstractCegarLoop]: Abstraction has 6778 states and 7145 transitions. [2023-12-22 12:30:47,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 108.0) internal successors, (1296), 12 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:30:47,342 INFO L276 IsEmpty]: Start isEmpty. Operand 6778 states and 7145 transitions. [2023-12-22 12:30:47,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1420 [2023-12-22 12:30:47,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:30:47,359 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:30:47,384 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 [2023-12-22 12:30:47,569 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 [2023-12-22 12:30:47,570 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:30:47,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:30:47,570 INFO L85 PathProgramCache]: Analyzing trace with hash 950458378, now seen corresponding path program 1 times [2023-12-22 12:30:47,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:30:47,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017148166] [2023-12-22 12:30:47,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:30:47,575 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 [2023-12-22 12:30:47,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:30:47,588 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) [2023-12-22 12:30:47,704 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 [2023-12-22 12:30:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:30:48,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 1546 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:30:48,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:30:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6258 backedges. 374 proven. 5292 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2023-12-22 12:30:54,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:31:13,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6258 backedges. 2645 proven. 0 refuted. 0 times theorem prover too weak. 3613 trivial. 0 not checked. [2023-12-22 12:31:13,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:31:13,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017148166] [2023-12-22 12:31:13,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017148166] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 12:31:13,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 12:31:13,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2023-12-22 12:31:13,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421523875] [2023-12-22 12:31:13,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:31:13,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 12:31:13,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:31:13,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 12:31:13,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:31:13,861 INFO L87 Difference]: Start difference. First operand 6778 states and 7145 transitions. Second operand has 5 states, 5 states have (on average 85.2) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:31:36,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:31:36,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:31:36,836 INFO L93 Difference]: Finished difference Result 12900 states and 13633 transitions. [2023-12-22 12:31:36,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 12:31:36,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 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 1419 [2023-12-22 12:31:36,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:31:36,864 INFO L225 Difference]: With dead ends: 12900 [2023-12-22 12:31:36,864 INFO L226 Difference]: Without dead ends: 7134 [2023-12-22 12:31:36,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2836 GetRequests, 2826 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:31:36,884 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 37 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2023-12-22 12:31:36,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 17 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 22.9s Time] [2023-12-22 12:31:36,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2023-12-22 12:31:36,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 6778. [2023-12-22 12:31:36,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6778 states, 6777 states have (on average 1.053120849933599) internal successors, (7137), 6777 states have internal predecessors, (7137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:31:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6778 states to 6778 states and 7137 transitions. [2023-12-22 12:31:37,004 INFO L78 Accepts]: Start accepts. Automaton has 6778 states and 7137 transitions. Word has length 1419 [2023-12-22 12:31:37,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:31:37,005 INFO L495 AbstractCegarLoop]: Abstraction has 6778 states and 7137 transitions. [2023-12-22 12:31:37,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:31:37,005 INFO L276 IsEmpty]: Start isEmpty. Operand 6778 states and 7137 transitions. [2023-12-22 12:31:37,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1462 [2023-12-22 12:31:37,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:31:37,024 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:31:37,038 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 [2023-12-22 12:31:37,235 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 [2023-12-22 12:31:37,236 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:31:37,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:31:37,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1784672671, now seen corresponding path program 1 times [2023-12-22 12:31:37,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:31:37,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417866836] [2023-12-22 12:31:37,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:31:37,241 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 [2023-12-22 12:31:37,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:31:37,243 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) [2023-12-22 12:31:37,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-22 12:31:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:31:37,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:31:37,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:31:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 396 proven. 5396 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2023-12-22 12:31:43,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:32:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 2771 proven. 0 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2023-12-22 12:32:30,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:32:30,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417866836] [2023-12-22 12:32:30,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417866836] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 12:32:30,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 12:32:30,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2023-12-22 12:32:30,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938155679] [2023-12-22 12:32:30,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:32:30,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 12:32:30,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:32:30,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 12:32:30,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:32:30,286 INFO L87 Difference]: Start difference. First operand 6778 states and 7137 transitions. Second operand has 5 states, 5 states have (on average 85.2) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:32:43,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:32:59,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:32:59,480 INFO L93 Difference]: Finished difference Result 12364 states and 13064 transitions. [2023-12-22 12:32:59,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 12:32:59,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 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 1461 [2023-12-22 12:32:59,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:32:59,490 INFO L225 Difference]: With dead ends: 12364 [2023-12-22 12:32:59,490 INFO L226 Difference]: Without dead ends: 6600 [2023-12-22 12:32:59,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2920 GetRequests, 2910 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:32:59,497 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 68 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.1s IncrementalHoareTripleChecker+Time [2023-12-22 12:32:59,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 17 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 898 Invalid, 1 Unknown, 0 Unchecked, 29.1s Time] [2023-12-22 12:32:59,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6600 states. [2023-12-22 12:32:59,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6600 to 6600. [2023-12-22 12:32:59,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6600 states, 6599 states have (on average 1.0521291104712835) internal successors, (6943), 6599 states have internal predecessors, (6943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:32:59,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6600 states to 6600 states and 6943 transitions. [2023-12-22 12:32:59,640 INFO L78 Accepts]: Start accepts. Automaton has 6600 states and 6943 transitions. Word has length 1461 [2023-12-22 12:32:59,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:32:59,641 INFO L495 AbstractCegarLoop]: Abstraction has 6600 states and 6943 transitions. [2023-12-22 12:32:59,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:32:59,641 INFO L276 IsEmpty]: Start isEmpty. Operand 6600 states and 6943 transitions. [2023-12-22 12:32:59,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1487 [2023-12-22 12:32:59,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:32:59,659 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:32:59,668 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 [2023-12-22 12:32:59,861 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 [2023-12-22 12:32:59,862 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:32:59,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:32:59,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2049098424, now seen corresponding path program 1 times [2023-12-22 12:32:59,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:32:59,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769063108] [2023-12-22 12:32:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:32:59,866 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 [2023-12-22 12:32:59,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:32:59,868 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) [2023-12-22 12:32:59,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-22 12:33:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:33:00,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:33:00,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:33:06,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6500 backedges. 0 proven. 5841 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2023-12-22 12:33:06,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:33:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6500 backedges. 2363 proven. 457 refuted. 0 times theorem prover too weak. 3680 trivial. 0 not checked. [2023-12-22 12:33:46,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:33:46,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769063108] [2023-12-22 12:33:46,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769063108] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:33:46,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:33:46,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2023-12-22 12:33:46,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361977178] [2023-12-22 12:33:46,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:33:46,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-22 12:33:46,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:33:46,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-22 12:33:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-12-22 12:33:46,749 INFO L87 Difference]: Start difference. First operand 6600 states and 6943 transitions. Second operand has 13 states, 13 states have (on average 99.76923076923077) internal successors, (1297), 12 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:34:17,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:34:28,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:34:39,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:34:39,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:34:39,465 INFO L93 Difference]: Finished difference Result 16560 states and 17673 transitions. [2023-12-22 12:34:39,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-22 12:34:39,470 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 99.76923076923077) internal successors, (1297), 12 states have internal predecessors, (1297), 0 states have call successors, (0), 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 1486 [2023-12-22 12:34:39,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:34:39,477 INFO L225 Difference]: With dead ends: 16560 [2023-12-22 12:34:39,478 INFO L226 Difference]: Without dead ends: 11000 [2023-12-22 12:34:39,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2982 GetRequests, 2959 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2023-12-22 12:34:39,481 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1482 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 11186 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 11462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 11186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.5s IncrementalHoareTripleChecker+Time [2023-12-22 12:34:39,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 244 Invalid, 11462 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [276 Valid, 11186 Invalid, 0 Unknown, 0 Unchecked, 50.5s Time] [2023-12-22 12:34:39,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11000 states. [2023-12-22 12:34:39,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11000 to 6956. [2023-12-22 12:34:39,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6956 states, 6955 states have (on average 1.0477354421279654) internal successors, (7287), 6955 states have internal predecessors, (7287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:34:39,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6956 states to 6956 states and 7287 transitions. [2023-12-22 12:34:39,562 INFO L78 Accepts]: Start accepts. Automaton has 6956 states and 7287 transitions. Word has length 1486 [2023-12-22 12:34:39,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:34:39,562 INFO L495 AbstractCegarLoop]: Abstraction has 6956 states and 7287 transitions. [2023-12-22 12:34:39,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 99.76923076923077) internal successors, (1297), 12 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:34:39,563 INFO L276 IsEmpty]: Start isEmpty. Operand 6956 states and 7287 transitions. [2023-12-22 12:34:39,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1557 [2023-12-22 12:34:39,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:34:39,579 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:34:39,589 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 (22)] Forceful destruction successful, exit code 0 [2023-12-22 12:34:39,788 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 [2023-12-22 12:34:39,788 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:34:39,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:34:39,789 INFO L85 PathProgramCache]: Analyzing trace with hash 911393677, now seen corresponding path program 1 times [2023-12-22 12:34:39,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:34:39,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561952374] [2023-12-22 12:34:39,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:34:39,793 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 [2023-12-22 12:34:39,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:34:39,794 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) [2023-12-22 12:34:39,795 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 [2023-12-22 12:34:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:34:40,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 1692 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:34:40,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:34:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 7331 backedges. 1201 proven. 5434 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2023-12-22 12:34:47,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:35:29,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7331 backedges. 3564 proven. 50 refuted. 0 times theorem prover too weak. 3717 trivial. 0 not checked. [2023-12-22 12:35:29,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:35:29,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561952374] [2023-12-22 12:35:29,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561952374] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:35:29,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:35:29,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 11 [2023-12-22 12:35:29,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125055167] [2023-12-22 12:35:29,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:35:29,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-22 12:35:29,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:35:29,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-22 12:35:29,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:35:29,583 INFO L87 Difference]: Start difference. First operand 6956 states and 7287 transitions. Second operand has 12 states, 12 states have (on average 110.91666666666667) internal successors, (1331), 11 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:36:01,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:36:01,121 INFO L93 Difference]: Finished difference Result 14780 states and 15520 transitions. [2023-12-22 12:36:01,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-22 12:36:01,122 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 110.91666666666667) internal successors, (1331), 11 states have internal predecessors, (1331), 0 states have call successors, (0), 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 1556 [2023-12-22 12:36:01,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:36:01,128 INFO L225 Difference]: With dead ends: 14780 [2023-12-22 12:36:01,128 INFO L226 Difference]: Without dead ends: 8814 [2023-12-22 12:36:01,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3111 GetRequests, 3100 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-22 12:36:01,132 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 208 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 8883 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 8929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 8883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2023-12-22 12:36:01,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 183 Invalid, 8929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 8883 Invalid, 0 Unknown, 0 Unchecked, 30.9s Time] [2023-12-22 12:36:01,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8814 states. [2023-12-22 12:36:01,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8814 to 6956. [2023-12-22 12:36:01,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6956 states, 6955 states have (on average 1.0465851905104242) internal successors, (7279), 6955 states have internal predecessors, (7279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:36:01,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6956 states to 6956 states and 7279 transitions. [2023-12-22 12:36:01,198 INFO L78 Accepts]: Start accepts. Automaton has 6956 states and 7279 transitions. Word has length 1556 [2023-12-22 12:36:01,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:36:01,199 INFO L495 AbstractCegarLoop]: Abstraction has 6956 states and 7279 transitions. [2023-12-22 12:36:01,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 110.91666666666667) internal successors, (1331), 11 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:36:01,199 INFO L276 IsEmpty]: Start isEmpty. Operand 6956 states and 7279 transitions. [2023-12-22 12:36:01,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1592 [2023-12-22 12:36:01,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:36:01,216 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:36:01,232 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 [2023-12-22 12:36:01,428 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 [2023-12-22 12:36:01,428 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:36:01,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:36:01,429 INFO L85 PathProgramCache]: Analyzing trace with hash 112043044, now seen corresponding path program 1 times [2023-12-22 12:36:01,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:36:01,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088841595] [2023-12-22 12:36:01,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:36:01,433 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:36:01,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:36:01,434 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) [2023-12-22 12:36:01,435 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 [2023-12-22 12:36:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:36:01,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:36:01,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:36:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 1363 proven. 6284 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2023-12-22 12:36:09,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:36:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 4382 proven. 244 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2023-12-22 12:36:14,748 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:36:14,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088841595] [2023-12-22 12:36:14,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088841595] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:36:14,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:36:14,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2023-12-22 12:36:14,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306532482] [2023-12-22 12:36:14,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:36:14,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-22 12:36:14,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:36:14,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-22 12:36:14,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-22 12:36:14,752 INFO L87 Difference]: Start difference. First operand 6956 states and 7279 transitions. Second operand has 14 states, 14 states have (on average 108.92857142857143) internal successors, (1525), 13 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:36:31,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:36:31,987 INFO L93 Difference]: Finished difference Result 14796 states and 15509 transitions. [2023-12-22 12:36:31,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-22 12:36:31,988 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 108.92857142857143) internal successors, (1525), 13 states have internal predecessors, (1525), 0 states have call successors, (0), 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 1591 [2023-12-22 12:36:31,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:36:31,994 INFO L225 Difference]: With dead ends: 14796 [2023-12-22 12:36:31,994 INFO L226 Difference]: Without dead ends: 8814 [2023-12-22 12:36:31,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3182 GetRequests, 3168 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-12-22 12:36:31,999 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 367 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 14004 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 14046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 14004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2023-12-22 12:36:31,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 296 Invalid, 14046 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 14004 Invalid, 0 Unknown, 0 Unchecked, 16.9s Time] [2023-12-22 12:36:32,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8814 states. [2023-12-22 12:36:32,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8814 to 6778. [2023-12-22 12:36:32,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6778 states, 6777 states have (on average 1.0424966799468791) internal successors, (7065), 6777 states have internal predecessors, (7065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:36:32,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6778 states to 6778 states and 7065 transitions. [2023-12-22 12:36:32,091 INFO L78 Accepts]: Start accepts. Automaton has 6778 states and 7065 transitions. Word has length 1591 [2023-12-22 12:36:32,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:36:32,092 INFO L495 AbstractCegarLoop]: Abstraction has 6778 states and 7065 transitions. [2023-12-22 12:36:32,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 108.92857142857143) internal successors, (1525), 13 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:36:32,093 INFO L276 IsEmpty]: Start isEmpty. Operand 6778 states and 7065 transitions. [2023-12-22 12:36:32,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1683 [2023-12-22 12:36:32,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:36:32,116 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:36:32,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-22 12:36:32,321 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 [2023-12-22 12:36:32,322 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:36:32,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:36:32,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1965142527, now seen corresponding path program 1 times [2023-12-22 12:36:32,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:36:32,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338805549] [2023-12-22 12:36:32,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:36:32,326 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 [2023-12-22 12:36:32,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:36:32,327 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) [2023-12-22 12:36:32,328 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 (25)] Waiting until timeout for monitored process [2023-12-22 12:36:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:36:32,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 12:36:32,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:36:35,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8949 backedges. 0 proven. 8355 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2023-12-22 12:36:35,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:36:48,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8949 backedges. 4500 proven. 834 refuted. 0 times theorem prover too weak. 3615 trivial. 0 not checked. [2023-12-22 12:36:48,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:36:48,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338805549] [2023-12-22 12:36:48,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338805549] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:36:48,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:36:48,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2023-12-22 12:36:48,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490801972] [2023-12-22 12:36:48,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:36:48,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 12:36:48,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:36:48,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 12:36:48,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-12-22 12:36:48,699 INFO L87 Difference]: Start difference. First operand 6778 states and 7065 transitions. Second operand has 16 states, 16 states have (on average 113.125) internal successors, (1810), 16 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:37:00,941 WARN L293 SmtUtils]: Spent 8.36s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-22 12:37:16,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:37:20,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:37:36,760 WARN L293 SmtUtils]: Spent 7.57s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-22 12:37:47,024 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 12:37:47,033 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 12:37:47,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-22 12:37:47,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3389 GetRequests, 3360 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=189, Invalid=681, Unknown=0, NotChecked=0, Total=870 [2023-12-22 12:37:47,214 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1362 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 14805 mSolverCounterSat, 120 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 14927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 14805 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.0s IncrementalHoareTripleChecker+Time [2023-12-22 12:37:47,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 288 Invalid, 14927 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 14805 Invalid, 2 Unknown, 0 Unchecked, 36.0s Time] [2023-12-22 12:37:47,215 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-22 12:37:47,223 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 [2023-12-22 12:37:47,416 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 [2023-12-22 12:37:47,416 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (6778states) and FLOYD_HOARE automaton (currently 20 states, 16 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-5-2-1 term,while SimplifyDDA2 was simplifying 5 xjuncts wrt. a ATOM-1 context. [2023-12-22 12:37:47,420 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-22 12:37:47,422 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 12:37:47,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 12:37:47 BoogieIcfgContainer [2023-12-22 12:37:47,423 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 12:37:47,423 INFO L158 Benchmark]: Toolchain (without parser) took 871426.14ms. Allocated memory was 356.5MB in the beginning and 813.7MB in the end (delta: 457.2MB). Free memory was 304.5MB in the beginning and 420.2MB in the end (delta: -115.8MB). Peak memory consumption was 342.4MB. Max. memory is 8.0GB. [2023-12-22 12:37:47,424 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 205.5MB. Free memory was 157.4MB in the beginning and 157.3MB in the end (delta: 153.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 12:37:47,424 INFO L158 Benchmark]: CACSL2BoogieTranslator took 622.21ms. Allocated memory is still 356.5MB. Free memory was 304.2MB in the beginning and 266.4MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-12-22 12:37:47,424 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.49ms. Allocated memory is still 356.5MB. Free memory was 266.4MB in the beginning and 259.8MB in the end (delta: 6.7MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-22 12:37:47,424 INFO L158 Benchmark]: Boogie Preprocessor took 150.35ms. Allocated memory is still 356.5MB. Free memory was 259.8MB in the beginning and 320.0MB in the end (delta: -60.2MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB. [2023-12-22 12:37:47,424 INFO L158 Benchmark]: RCFGBuilder took 3238.27ms. Allocated memory is still 356.5MB. Free memory was 320.0MB in the beginning and 192.1MB in the end (delta: 127.9MB). Peak memory consumption was 127.9MB. Max. memory is 8.0GB. [2023-12-22 12:37:47,425 INFO L158 Benchmark]: TraceAbstraction took 867323.50ms. Allocated memory was 356.5MB in the beginning and 813.7MB in the end (delta: 457.2MB). Free memory was 191.5MB in the beginning and 420.2MB in the end (delta: -228.7MB). Peak memory consumption was 228.8MB. Max. memory is 8.0GB. [2023-12-22 12:37:47,426 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 205.5MB. Free memory was 157.4MB in the beginning and 157.3MB in the end (delta: 153.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 622.21ms. Allocated memory is still 356.5MB. Free memory was 304.2MB in the beginning and 266.4MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 85.49ms. Allocated memory is still 356.5MB. Free memory was 266.4MB in the beginning and 259.8MB in the end (delta: 6.7MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 150.35ms. Allocated memory is still 356.5MB. Free memory was 259.8MB in the beginning and 320.0MB in the end (delta: -60.2MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB. * RCFGBuilder took 3238.27ms. Allocated memory is still 356.5MB. Free memory was 320.0MB in the beginning and 192.1MB in the end (delta: 127.9MB). Peak memory consumption was 127.9MB. Max. memory is 8.0GB. * TraceAbstraction took 867323.50ms. Allocated memory was 356.5MB in the beginning and 813.7MB in the end (delta: 457.2MB). Free memory was 191.5MB in the beginning and 420.2MB in the end (delta: -228.7MB). Peak memory consumption was 228.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 206]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 206). Cancelled while NwaCegarLoop was constructing difference of abstraction (6778states) and FLOYD_HOARE automaton (currently 20 states, 16 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-5-2-1 term,while SimplifyDDA2 was simplifying 5 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 867.3s, OverallIterations: 24, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 429.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 9503 SdHoareTripleChecker+Valid, 392.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9503 mSDsluCounter, 3234 SdHoareTripleChecker+Invalid, 355.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1526 mSDsCounter, 2260 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 93092 IncrementalHoareTripleChecker+Invalid, 95358 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2260 mSolverCounterUnsat, 1708 mSDtfsCounter, 93092 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36002 GetRequests, 35776 SyntacticMatches, 2 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 60.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6956occurred in iteration=21, InterpolantAutomatonStates: 200, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 23 MinimizatonAttempts, 14422 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 4.5s SatisfiabilityAnalysisTime, 423.2s InterpolantComputationTime, 20072 NumberOfCodeBlocks, 20072 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 35930 ConstructedInterpolants, 0 QuantifiedInterpolants, 258437 SizeOfPredicates, 28 NumberOfNonLiveVariables, 22129 ConjunctsInSsa, 172 ConjunctsInUnsatCore, 39 InterpolantComputations, 13 PerfectInterpolantSequences, 81971/136379 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown