/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/Problem13_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 11:20:03,146 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 11:20:03,213 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 11:20:03,216 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 11:20:03,217 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 11:20:03,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 11:20:03,239 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 11:20:03,239 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 11:20:03,240 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 11:20:03,243 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 11:20:03,243 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 11:20:03,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 11:20:03,244 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 11:20:03,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 11:20:03,245 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 11:20:03,245 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 11:20:03,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 11:20:03,246 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 11:20:03,246 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 11:20:03,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 11:20:03,247 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 11:20:03,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 11:20:03,247 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 11:20:03,248 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 11:20:03,248 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 11:20:03,248 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 11:20:03,248 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 11:20:03,248 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 11:20:03,249 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 11:20:03,249 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 11:20:03,249 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 11:20:03,250 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 11:20:03,250 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 11:20:03,250 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 11:20:03,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 11:20:03,250 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 11:20:03,250 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 11:20:03,250 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 11:20:03,250 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 11:20:03,251 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 11:20:03,251 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 11:20:03,251 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 11:20:03,251 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 11:20:03,251 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 11:20:03,251 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 11:20:03,252 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 11:20:03,252 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 11:20:03,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 11:20:03,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 11:20:03,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 11:20:03,462 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 11:20:03,462 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 11:20:03,463 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label22.c [2023-12-22 11:20:04,532 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 11:20:04,855 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 11:20:04,856 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label22.c [2023-12-22 11:20:04,881 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/676e93089/1b63dfdb84994ecab2f1916f34e62a39/FLAGa0b353c2d [2023-12-22 11:20:04,894 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/676e93089/1b63dfdb84994ecab2f1916f34e62a39 [2023-12-22 11:20:04,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 11:20:04,897 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 11:20:04,898 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 11:20:04,898 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 11:20:04,906 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 11:20:04,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:20:04" (1/1) ... [2023-12-22 11:20:04,907 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@746c9b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:20:04, skipping insertion in model container [2023-12-22 11:20:04,907 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:20:04" (1/1) ... [2023-12-22 11:20:05,006 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 11:20:05,210 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/Problem13_label22.c[4777,4790] [2023-12-22 11:20:05,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 11:20:05,908 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 11:20:05,924 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/Problem13_label22.c[4777,4790] [2023-12-22 11:20:06,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 11:20:06,319 INFO L206 MainTranslator]: Completed translation [2023-12-22 11:20:06,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:20:06 WrapperNode [2023-12-22 11:20:06,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 11:20:06,321 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 11:20:06,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 11:20:06,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 11:20:06,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:20:06" (1/1) ... [2023-12-22 11:20:06,389 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:20:06" (1/1) ... [2023-12-22 11:20:06,542 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5582 [2023-12-22 11:20:06,543 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 11:20:06,543 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 11:20:06,543 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 11:20:06,543 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 11:20:06,551 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:20:06" (1/1) ... [2023-12-22 11:20:06,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:20:06" (1/1) ... [2023-12-22 11:20:06,576 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:20:06" (1/1) ... [2023-12-22 11:20:06,645 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 11:20:06,645 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:20:06" (1/1) ... [2023-12-22 11:20:06,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:20:06" (1/1) ... [2023-12-22 11:20:06,720 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:20:06" (1/1) ... [2023-12-22 11:20:06,755 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:20:06" (1/1) ... [2023-12-22 11:20:06,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:20:06" (1/1) ... [2023-12-22 11:20:06,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:20:06" (1/1) ... [2023-12-22 11:20:06,903 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 11:20:06,908 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 11:20:06,908 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 11:20:06,908 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 11:20:06,909 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:20:06" (1/1) ... [2023-12-22 11:20:06,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 11:20:06,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 11:20:06,939 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 11:20:06,976 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 11:20:06,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 11:20:06,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 11:20:06,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 11:20:06,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 11:20:07,073 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 11:20:07,074 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 11:20:51,913 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 11:20:52,026 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 11:20:52,026 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 11:20:52,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:20:52 BoogieIcfgContainer [2023-12-22 11:20:52,027 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 11:20:52,036 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 11:20:52,036 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 11:20:52,038 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 11:20:52,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:20:04" (1/3) ... [2023-12-22 11:20:52,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57bd997d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:20:52, skipping insertion in model container [2023-12-22 11:20:52,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:20:06" (2/3) ... [2023-12-22 11:20:52,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57bd997d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:20:52, skipping insertion in model container [2023-12-22 11:20:52,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:20:52" (3/3) ... [2023-12-22 11:20:52,040 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label22.c [2023-12-22 11:20:52,053 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 11:20:52,053 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 11:20:52,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 11:20:52,115 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;@4b68c3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 11:20:52,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 11:20:52,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states 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 11:20:52,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-22 11:20:52,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:20:52,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 11:20:52,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:20:52,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:20:52,135 INFO L85 PathProgramCache]: Analyzing trace with hash 830551, now seen corresponding path program 1 times [2023-12-22 11:20:52,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:20:52,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420461875] [2023-12-22 11:20:52,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:20:52,146 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 11:20:52,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:20:52,149 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 11:20:52,170 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 11:20:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:20:52,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 11:20:52,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:20:52,238 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 11:20:52,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 11:20:52,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:20:52,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420461875] [2023-12-22 11:20:52,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420461875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 11:20:52,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 11:20:52,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 11:20:52,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709733157] [2023-12-22 11:20:52,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 11:20:52,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 11:20:52,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:20:52,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 11:20:52,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 11:20:52,272 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 11:20:52,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:20:52,363 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-22 11:20:52,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 11:20:52,365 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2023-12-22 11:20:52,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:20:52,380 INFO L225 Difference]: With dead ends: 2071 [2023-12-22 11:20:52,380 INFO L226 Difference]: Without dead ends: 1034 [2023-12-22 11:20:52,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 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 11:20:52,387 INFO L413 NwaCegarLoop]: 1876 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, 1876 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 11:20:52,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 11:20:52,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-22 11:20:52,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-22 11:20:52,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states 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 11:20:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-22 11:20:52,451 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 31 [2023-12-22 11:20:52,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:20:52,452 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-22 11:20:52,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 11:20:52,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-22 11:20:52,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-22 11:20:52,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:20:52,453 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] [2023-12-22 11:20:52,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-22 11:20:52,655 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 11:20:52,655 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:20:52,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:20:52,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1073963365, now seen corresponding path program 1 times [2023-12-22 11:20:52,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:20:52,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109334884] [2023-12-22 11:20:52,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:20:52,657 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 11:20:52,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:20:52,659 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 11:20:52,660 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 11:20:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:20:52,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 11:20:52,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:20:52,755 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 11:20:52,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 11:20:52,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:20:52,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109334884] [2023-12-22 11:20:52,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109334884] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 11:20:52,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 11:20:52,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 11:20:52,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23533390] [2023-12-22 11:20:52,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 11:20:52,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 11:20:52,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:20:52,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 11:20:52,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:20:52,757 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 11:21:51,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:21:51,207 INFO L93 Difference]: Finished difference Result 2873 states and 5291 transitions. [2023-12-22 11:21:51,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 11:21:51,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2023-12-22 11:21:51,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:21:51,213 INFO L225 Difference]: With dead ends: 2873 [2023-12-22 11:21:51,213 INFO L226 Difference]: Without dead ends: 1840 [2023-12-22 11:21:51,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 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 11:21:51,215 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 817 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 2642 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 3209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 2642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.2s IncrementalHoareTripleChecker+Time [2023-12-22 11:21:51,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 1114 Invalid, 3209 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [567 Valid, 2642 Invalid, 0 Unknown, 0 Unchecked, 58.2s Time] [2023-12-22 11:21:51,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2023-12-22 11:21:51,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1835. [2023-12-22 11:21:51,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1835 states, 1834 states have (on average 1.5474372955288986) internal successors, (2838), 1834 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states 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 11:21:51,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2838 transitions. [2023-12-22 11:21:51,243 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2838 transitions. Word has length 31 [2023-12-22 11:21:51,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:21:51,243 INFO L495 AbstractCegarLoop]: Abstraction has 1835 states and 2838 transitions. [2023-12-22 11:21:51,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 11:21:51,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2838 transitions. [2023-12-22 11:21:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-22 11:21:51,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:21:51,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:21:51,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-22 11:21:51,447 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 11:21:51,448 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:21:51,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:21:51,449 INFO L85 PathProgramCache]: Analyzing trace with hash 627211793, now seen corresponding path program 1 times [2023-12-22 11:21:51,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:21:51,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919000648] [2023-12-22 11:21:51,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:21:51,451 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 11:21:51,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:21:51,452 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 11:21:51,461 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 11:21:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:21:51,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 11:21:51,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:21:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:21:51,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 11:21:51,672 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:21:51,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919000648] [2023-12-22 11:21:51,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919000648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 11:21:51,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 11:21:51,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 11:21:51,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519900891] [2023-12-22 11:21:51,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 11:21:51,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 11:21:51,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:21:51,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 11:21:51,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:21:51,678 INFO L87 Difference]: Start difference. First operand 1835 states and 2838 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 11:22:42,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:22:42,757 INFO L93 Difference]: Finished difference Result 5284 states and 8167 transitions. [2023-12-22 11:22:42,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 11:22:42,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2023-12-22 11:22:42,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:22:42,767 INFO L225 Difference]: With dead ends: 5284 [2023-12-22 11:22:42,767 INFO L226 Difference]: Without dead ends: 3450 [2023-12-22 11:22:42,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 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 11:22:42,771 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 923 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.9s IncrementalHoareTripleChecker+Time [2023-12-22 11:22:42,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1007 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 50.9s Time] [2023-12-22 11:22:42,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3450 states. [2023-12-22 11:22:42,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3450 to 3448. [2023-12-22 11:22:42,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3448 states, 3447 states have (on average 1.3762692196112563) internal successors, (4744), 3447 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states 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 11:22:42,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3448 states to 3448 states and 4744 transitions. [2023-12-22 11:22:42,815 INFO L78 Accepts]: Start accepts. Automaton has 3448 states and 4744 transitions. Word has length 96 [2023-12-22 11:22:42,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:22:42,817 INFO L495 AbstractCegarLoop]: Abstraction has 3448 states and 4744 transitions. [2023-12-22 11:22:42,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 11:22:42,817 INFO L276 IsEmpty]: Start isEmpty. Operand 3448 states and 4744 transitions. [2023-12-22 11:22:42,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-22 11:22:42,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:22:42,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:42,828 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 11:22:43,026 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 11:22:43,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:22:43,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:22:43,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1799997635, now seen corresponding path program 1 times [2023-12-22 11:22:43,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:22:43,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498914779] [2023-12-22 11:22:43,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:22:43,029 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 11:22:43,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:22:43,032 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 11:22:43,041 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 11:22:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:22:43,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 11:22:43,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:22:43,229 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:22:43,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 11:22:43,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:22:43,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498914779] [2023-12-22 11:22:43,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498914779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 11:22:43,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 11:22:43,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 11:22:43,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918084877] [2023-12-22 11:22:43,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 11:22:43,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 11:22:43,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:22:43,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 11:22:43,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:22:43,232 INFO L87 Difference]: Start difference. First operand 3448 states and 4744 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 11:23:44,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:23:44,230 INFO L93 Difference]: Finished difference Result 10086 states and 13870 transitions. [2023-12-22 11:23:44,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 11:23:44,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-22 11:23:44,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:23:44,257 INFO L225 Difference]: With dead ends: 10086 [2023-12-22 11:23:44,257 INFO L226 Difference]: Without dead ends: 6639 [2023-12-22 11:23:44,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 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 11:23:44,265 INFO L413 NwaCegarLoop]: 1862 mSDtfsCounter, 840 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.8s IncrementalHoareTripleChecker+Time [2023-12-22 11:23:44,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 2011 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 2636 Invalid, 0 Unknown, 0 Unchecked, 60.8s Time] [2023-12-22 11:23:44,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2023-12-22 11:23:44,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6622. [2023-12-22 11:23:44,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6622 states, 6621 states have (on average 1.2428636157680109) internal successors, (8229), 6621 states have internal predecessors, (8229), 0 states have call successors, (0), 0 states 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 11:23:44,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6622 states to 6622 states and 8229 transitions. [2023-12-22 11:23:44,341 INFO L78 Accepts]: Start accepts. Automaton has 6622 states and 8229 transitions. Word has length 104 [2023-12-22 11:23:44,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:23:44,343 INFO L495 AbstractCegarLoop]: Abstraction has 6622 states and 8229 transitions. [2023-12-22 11:23:44,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 11:23:44,343 INFO L276 IsEmpty]: Start isEmpty. Operand 6622 states and 8229 transitions. [2023-12-22 11:23:44,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-22 11:23:44,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:23:44,345 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:44,352 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 11:23:44,550 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 11:23:44,550 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:23:44,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:23:44,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1587838598, now seen corresponding path program 1 times [2023-12-22 11:23:44,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:23:44,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226502498] [2023-12-22 11:23:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:23:44,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 11:23:44,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:23:44,553 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 11:23:44,582 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 11:23:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:23:44,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 11:23:44,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:23:44,735 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:23:44,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 11:23:44,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:23:44,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226502498] [2023-12-22 11:23:44,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226502498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 11:23:44,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 11:23:44,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 11:23:44,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183579191] [2023-12-22 11:23:44,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 11:23:44,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 11:23:44,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:23:44,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 11:23:44,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:23:44,737 INFO L87 Difference]: Start difference. First operand 6622 states and 8229 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 11:24:47,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:24:47,049 INFO L93 Difference]: Finished difference Result 16422 states and 20827 transitions. [2023-12-22 11:24:47,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 11:24:47,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2023-12-22 11:24:47,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:24:47,081 INFO L225 Difference]: With dead ends: 16422 [2023-12-22 11:24:47,082 INFO L226 Difference]: Without dead ends: 9801 [2023-12-22 11:24:47,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 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 11:24:47,090 INFO L413 NwaCegarLoop]: 1050 mSDtfsCounter, 776 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2509 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 2509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.1s IncrementalHoareTripleChecker+Time [2023-12-22 11:24:47,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 1200 Invalid, 3293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 2509 Invalid, 0 Unknown, 0 Unchecked, 62.1s Time] [2023-12-22 11:24:47,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9801 states. [2023-12-22 11:24:47,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9801 to 9786. [2023-12-22 11:24:47,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9786 states, 9785 states have (on average 1.192437404190087) internal successors, (11668), 9785 states have internal predecessors, (11668), 0 states have call successors, (0), 0 states 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 11:24:47,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9786 states to 9786 states and 11668 transitions. [2023-12-22 11:24:47,216 INFO L78 Accepts]: Start accepts. Automaton has 9786 states and 11668 transitions. Word has length 113 [2023-12-22 11:24:47,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:24:47,217 INFO L495 AbstractCegarLoop]: Abstraction has 9786 states and 11668 transitions. [2023-12-22 11:24:47,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 11:24:47,218 INFO L276 IsEmpty]: Start isEmpty. Operand 9786 states and 11668 transitions. [2023-12-22 11:24:47,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-22 11:24:47,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:24:47,224 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:47,230 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 11:24:47,427 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 11:24:47,427 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:24:47,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:24:47,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1157937516, now seen corresponding path program 1 times [2023-12-22 11:24:47,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:24:47,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268454275] [2023-12-22 11:24:47,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:24:47,429 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 11:24:47,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:24:47,457 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 11:24:47,459 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 11:24:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:24:47,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 11:24:47,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:24:47,585 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:24:47,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 11:24:47,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:24:47,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268454275] [2023-12-22 11:24:47,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268454275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 11:24:47,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 11:24:47,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 11:24:47,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019334520] [2023-12-22 11:24:47,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 11:24:47,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 11:24:47,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:24:47,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 11:24:47,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 11:24:47,627 INFO L87 Difference]: Start difference. First operand 9786 states and 11668 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 11:25:33,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:25:33,291 INFO L93 Difference]: Finished difference Result 25869 states and 31338 transitions. [2023-12-22 11:25:33,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 11:25:33,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2023-12-22 11:25:33,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:25:33,341 INFO L225 Difference]: With dead ends: 25869 [2023-12-22 11:25:33,341 INFO L226 Difference]: Without dead ends: 16084 [2023-12-22 11:25:33,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 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 11:25:33,367 INFO L413 NwaCegarLoop]: 1778 mSDtfsCounter, 930 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2447 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 3260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 2447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.4s IncrementalHoareTripleChecker+Time [2023-12-22 11:25:33,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 1914 Invalid, 3260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [813 Valid, 2447 Invalid, 0 Unknown, 0 Unchecked, 45.4s Time] [2023-12-22 11:25:33,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16084 states. [2023-12-22 11:25:33,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16084 to 16082. [2023-12-22 11:25:33,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16082 states, 16081 states have (on average 1.1637957838442883) internal successors, (18715), 16081 states have internal predecessors, (18715), 0 states have call successors, (0), 0 states 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 11:25:33,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16082 states to 16082 states and 18715 transitions. [2023-12-22 11:25:33,618 INFO L78 Accepts]: Start accepts. Automaton has 16082 states and 18715 transitions. Word has length 156 [2023-12-22 11:25:33,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:25:33,619 INFO L495 AbstractCegarLoop]: Abstraction has 16082 states and 18715 transitions. [2023-12-22 11:25:33,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 11:25:33,620 INFO L276 IsEmpty]: Start isEmpty. Operand 16082 states and 18715 transitions. [2023-12-22 11:25:33,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-22 11:25:33,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:25:33,623 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 11:25:33,626 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 11:25:33,826 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 11:25:33,826 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:25:33,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:25:33,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2043546183, now seen corresponding path program 1 times [2023-12-22 11:25:33,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:25:33,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394064797] [2023-12-22 11:25:33,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:25:33,828 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 11:25:33,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:25:33,829 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 11:25:33,830 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 11:25:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:25:33,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 11:25:33,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:25:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 59 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:25:34,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 11:25:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 59 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:25:34,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:25:34,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394064797] [2023-12-22 11:25:34,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394064797] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 11:25:34,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 11:25:34,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-22 11:25:34,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543532717] [2023-12-22 11:25:34,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 11:25:34,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 11:25:34,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:25:34,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 11:25:34,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-22 11:25:34,810 INFO L87 Difference]: Start difference. First operand 16082 states and 18715 transitions. Second operand has 6 states, 6 states have (on average 64.5) internal successors, (387), 5 states have internal predecessors, (387), 0 states have call successors, (0), 0 states 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 11:27:48,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:29:20,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:31:53,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 11:31:53,504 INFO L93 Difference]: Finished difference Result 63911 states and 76123 transitions. [2023-12-22 11:31:53,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 11:31:53,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 64.5) internal successors, (387), 5 states have internal predecessors, (387), 0 states have call successors, (0), 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 209 [2023-12-22 11:31:53,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 11:31:53,577 INFO L225 Difference]: With dead ends: 63911 [2023-12-22 11:31:53,577 INFO L226 Difference]: Without dead ends: 48617 [2023-12-22 11:31:53,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-22 11:31:53,594 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 5374 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 10686 mSolverCounterSat, 2155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 354.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5374 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 12841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2155 IncrementalHoareTripleChecker+Valid, 10686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 377.9s IncrementalHoareTripleChecker+Time [2023-12-22 11:31:53,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5374 Valid, 645 Invalid, 12841 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2155 Valid, 10686 Invalid, 0 Unknown, 0 Unchecked, 377.9s Time] [2023-12-22 11:31:53,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48617 states. [2023-12-22 11:31:53,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48617 to 27133. [2023-12-22 11:31:53,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27133 states, 27132 states have (on average 1.1425622880731239) internal successors, (31000), 27132 states have internal predecessors, (31000), 0 states have call successors, (0), 0 states 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 11:31:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27133 states to 27133 states and 31000 transitions. [2023-12-22 11:31:54,001 INFO L78 Accepts]: Start accepts. Automaton has 27133 states and 31000 transitions. Word has length 209 [2023-12-22 11:31:54,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 11:31:54,001 INFO L495 AbstractCegarLoop]: Abstraction has 27133 states and 31000 transitions. [2023-12-22 11:31:54,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.5) internal successors, (387), 5 states have internal predecessors, (387), 0 states have call successors, (0), 0 states 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 11:31:54,001 INFO L276 IsEmpty]: Start isEmpty. Operand 27133 states and 31000 transitions. [2023-12-22 11:31:54,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-22 11:31:54,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 11:31:54,004 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:31:54,008 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 11:31:54,206 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 11:31:54,206 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 11:31:54,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 11:31:54,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1235513322, now seen corresponding path program 1 times [2023-12-22 11:31:54,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 11:31:54,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719213146] [2023-12-22 11:31:54,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 11:31:54,208 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 11:31:54,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 11:31:54,209 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 11:31:54,211 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 11:31:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 11:31:54,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 11:31:54,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 11:31:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 59 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:31:55,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 11:32:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 59 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 11:32:05,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 11:32:05,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719213146] [2023-12-22 11:32:05,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719213146] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 11:32:05,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 11:32:05,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 11:32:05,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878291769] [2023-12-22 11:32:05,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 11:32:05,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 11:32:05,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 11:32:05,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 11:32:05,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-22 11:32:05,805 INFO L87 Difference]: Start difference. First operand 27133 states and 31000 transitions. Second operand has 7 states, 7 states have (on average 59.57142857142857) internal successors, (417), 6 states have internal predecessors, (417), 0 states have call successors, (0), 0 states 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 11:32:24,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:32:37,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:33:23,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:33:40,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:33:48,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:34:07,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:34:12,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:34:18,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 11:34:21,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-22 11:34:40,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-22 11:34:40,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-12-22 11:34:40,478 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 5513 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 9323 mSolverCounterSat, 917 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 131.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5513 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 10240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 9323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 153.4s IncrementalHoareTripleChecker+Time [2023-12-22 11:34:40,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5513 Valid, 691 Invalid, 10240 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [917 Valid, 9323 Invalid, 0 Unknown, 0 Unchecked, 153.4s Time] [2023-12-22 11:34:40,479 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-22 11:34:40,490 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 11:34:40,498 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 11:34:40,498 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 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 11:34:40,679 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 11:34:40,681 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (27133states) and FLOYD_HOARE automaton (currently 12 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (38722 states constructed, input type IntersectNwa). [2023-12-22 11:34:40,686 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 11:34:40,688 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 11:34:40,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:34:40 BoogieIcfgContainer [2023-12-22 11:34:40,690 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 11:34:40,690 INFO L158 Benchmark]: Toolchain (without parser) took 875793.69ms. Allocated memory was 241.2MB in the beginning and 568.3MB in the end (delta: 327.2MB). Free memory was 176.6MB in the beginning and 178.6MB in the end (delta: -2.0MB). Peak memory consumption was 416.7MB. Max. memory is 8.0GB. [2023-12-22 11:34:40,690 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 175.1MB. Free memory is still 127.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 11:34:40,690 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1422.00ms. Allocated memory is still 241.2MB. Free memory was 176.6MB in the beginning and 101.7MB in the end (delta: 74.9MB). Peak memory consumption was 95.1MB. Max. memory is 8.0GB. [2023-12-22 11:34:40,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 221.44ms. Allocated memory was 241.2MB in the beginning and 334.5MB in the end (delta: 93.3MB). Free memory was 101.7MB in the beginning and 237.8MB in the end (delta: -136.1MB). Peak memory consumption was 37.4MB. Max. memory is 8.0GB. [2023-12-22 11:34:40,691 INFO L158 Benchmark]: Boogie Preprocessor took 360.08ms. Allocated memory is still 334.5MB. Free memory was 237.8MB in the beginning and 235.2MB in the end (delta: 2.6MB). Peak memory consumption was 76.5MB. Max. memory is 8.0GB. [2023-12-22 11:34:40,691 INFO L158 Benchmark]: RCFGBuilder took 45118.57ms. Allocated memory was 334.5MB in the beginning and 568.3MB in the end (delta: 233.8MB). Free memory was 235.2MB in the beginning and 447.5MB in the end (delta: -212.3MB). Peak memory consumption was 263.7MB. Max. memory is 8.0GB. [2023-12-22 11:34:40,691 INFO L158 Benchmark]: TraceAbstraction took 828653.70ms. Allocated memory is still 568.3MB. Free memory was 447.0MB in the beginning and 178.6MB in the end (delta: 268.4MB). Peak memory consumption was 358.6MB. Max. memory is 8.0GB. [2023-12-22 11:34:40,692 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 175.1MB. Free memory is still 127.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1422.00ms. Allocated memory is still 241.2MB. Free memory was 176.6MB in the beginning and 101.7MB in the end (delta: 74.9MB). Peak memory consumption was 95.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 221.44ms. Allocated memory was 241.2MB in the beginning and 334.5MB in the end (delta: 93.3MB). Free memory was 101.7MB in the beginning and 237.8MB in the end (delta: -136.1MB). Peak memory consumption was 37.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 360.08ms. Allocated memory is still 334.5MB. Free memory was 237.8MB in the beginning and 235.2MB in the end (delta: 2.6MB). Peak memory consumption was 76.5MB. Max. memory is 8.0GB. * RCFGBuilder took 45118.57ms. Allocated memory was 334.5MB in the beginning and 568.3MB in the end (delta: 233.8MB). Free memory was 235.2MB in the beginning and 447.5MB in the end (delta: -212.3MB). Peak memory consumption was 263.7MB. Max. memory is 8.0GB. * TraceAbstraction took 828653.70ms. Allocated memory is still 568.3MB. Free memory was 447.0MB in the beginning and 178.6MB in the end (delta: 268.4MB). Peak memory consumption was 358.6MB. 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: 118]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 118). Cancelled while NwaCegarLoop was constructing difference of abstraction (27133states) and FLOYD_HOARE automaton (currently 12 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (38722 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1036 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 828.6s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 812.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15173 SdHoareTripleChecker+Valid, 808.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15173 mSDsluCounter, 10458 SdHoareTripleChecker+Invalid, 712.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1633 mSDsCounter, 6802 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32556 IncrementalHoareTripleChecker+Invalid, 39358 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6802 mSolverCounterUnsat, 8825 mSDtfsCounter, 32556 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1430 GetRequests, 1409 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27133occurred in iteration=7, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 21525 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 982 NumberOfCodeBlocks, 982 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1423 ConstructedInterpolants, 0 QuantifiedInterpolants, 8048 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1325 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 352/680 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