/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/Problem12_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 10:33:54,911 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 10:33:54,973 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 10:33:54,977 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 10:33:54,977 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 10:33:54,998 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 10:33:54,999 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 10:33:54,999 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 10:33:55,000 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 10:33:55,003 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 10:33:55,003 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 10:33:55,004 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 10:33:55,005 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 10:33:55,006 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 10:33:55,006 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 10:33:55,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 10:33:55,006 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 10:33:55,006 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 10:33:55,007 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 10:33:55,007 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 10:33:55,007 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 10:33:55,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 10:33:55,007 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 10:33:55,007 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 10:33:55,008 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 10:33:55,008 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 10:33:55,008 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 10:33:55,008 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 10:33:55,008 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 10:33:55,008 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 10:33:55,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 10:33:55,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 10:33:55,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 10:33:55,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 10:33:55,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 10:33:55,009 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 10:33:55,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 10:33:55,010 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 10:33:55,010 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 10:33:55,010 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 10:33:55,010 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 10:33:55,010 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 10:33:55,010 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 10:33:55,010 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 10:33:55,011 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 10:33:55,011 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 10:33:55,011 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 10:33:55,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 10:33:55,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 10:33:55,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 10:33:55,208 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 10:33:55,208 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 10:33:55,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label38.c [2023-12-22 10:33:56,095 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 10:33:56,395 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 10:33:56,395 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label38.c [2023-12-22 10:33:56,417 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9648c0abc/3595725a00f54460b8e3314ceedddaee/FLAG93d792e81 [2023-12-22 10:33:56,433 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9648c0abc/3595725a00f54460b8e3314ceedddaee [2023-12-22 10:33:56,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 10:33:56,435 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 10:33:56,436 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 10:33:56,436 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 10:33:56,440 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 10:33:56,440 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:33:56" (1/1) ... [2023-12-22 10:33:56,441 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d54e881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:33:56, skipping insertion in model container [2023-12-22 10:33:56,441 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:33:56" (1/1) ... [2023-12-22 10:33:56,528 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 10:33:56,678 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/Problem12_label38.c[3304,3317] [2023-12-22 10:33:57,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 10:33:57,269 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 10:33:57,288 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/Problem12_label38.c[3304,3317] [2023-12-22 10:33:57,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 10:33:57,616 INFO L206 MainTranslator]: Completed translation [2023-12-22 10:33:57,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:33:57 WrapperNode [2023-12-22 10:33:57,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 10:33:57,618 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 10:33:57,618 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 10:33:57,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 10:33:57,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:33:57" (1/1) ... [2023-12-22 10:33:57,681 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:33:57" (1/1) ... [2023-12-22 10:33:57,778 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4756 [2023-12-22 10:33:57,778 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 10:33:57,779 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 10:33:57,779 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 10:33:57,779 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 10:33:57,786 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:33:57" (1/1) ... [2023-12-22 10:33:57,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:33:57" (1/1) ... [2023-12-22 10:33:57,808 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:33:57" (1/1) ... [2023-12-22 10:33:57,865 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 10:33:57,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:33:57" (1/1) ... [2023-12-22 10:33:57,866 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:33:57" (1/1) ... [2023-12-22 10:33:57,925 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:33:57" (1/1) ... [2023-12-22 10:33:57,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:33:57" (1/1) ... [2023-12-22 10:33:57,959 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:33:57" (1/1) ... [2023-12-22 10:33:57,972 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:33:57" (1/1) ... [2023-12-22 10:33:57,988 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 10:33:57,990 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 10:33:57,990 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 10:33:57,990 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 10:33:57,991 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:33:57" (1/1) ... [2023-12-22 10:33:57,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 10:33:58,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 10:33:58,013 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 10:33:58,021 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 10:33:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 10:33:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 10:33:58,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 10:33:58,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 10:33:58,092 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 10:33:58,094 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 10:34:20,572 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 10:34:20,642 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 10:34:20,642 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 10:34:20,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:34:20 BoogieIcfgContainer [2023-12-22 10:34:20,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 10:34:20,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 10:34:20,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 10:34:20,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 10:34:20,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:33:56" (1/3) ... [2023-12-22 10:34:20,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57059e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:34:20, skipping insertion in model container [2023-12-22 10:34:20,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:33:57" (2/3) ... [2023-12-22 10:34:20,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57059e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:34:20, skipping insertion in model container [2023-12-22 10:34:20,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:34:20" (3/3) ... [2023-12-22 10:34:20,649 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label38.c [2023-12-22 10:34:20,661 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 10:34:20,661 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 10:34:20,716 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 10:34:20,722 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;@4ddc0e2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 10:34:20,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 10:34:20,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states 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 10:34:20,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-22 10:34:20,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:34:20,739 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] [2023-12-22 10:34:20,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:34:20,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:34:20,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1728246146, now seen corresponding path program 1 times [2023-12-22 10:34:20,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:34:20,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26158521] [2023-12-22 10:34:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:34:20,757 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 10:34:20,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:34:20,762 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 10:34:20,769 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 10:34:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:34:20,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 10:34:20,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:34:20,845 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 10:34:20,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:34:20,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:34:20,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26158521] [2023-12-22 10:34:20,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26158521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:34:20,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:34:20,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 10:34:20,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143817915] [2023-12-22 10:34:20,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:34:20,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 10:34:20,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:34:20,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 10:34:20,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 10:34:20,877 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 10:34:20,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:34:20,955 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2023-12-22 10:34:20,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 10:34:20,957 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-22 10:34:20,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:34:20,967 INFO L225 Difference]: With dead ends: 1511 [2023-12-22 10:34:20,967 INFO L226 Difference]: Without dead ends: 754 [2023-12-22 10:34:20,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 10:34:20,973 INFO L413 NwaCegarLoop]: 1438 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, 1438 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 10:34:20,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 10:34:20,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-22 10:34:21,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-12-22 10:34:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 10:34:21,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2023-12-22 10:34:21,027 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 23 [2023-12-22 10:34:21,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:34:21,027 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2023-12-22 10:34:21,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 10:34:21,028 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2023-12-22 10:34:21,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-22 10:34:21,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:34:21,028 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] [2023-12-22 10:34:21,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-22 10:34:21,230 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 10:34:21,231 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:34:21,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:34:21,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1496572785, now seen corresponding path program 1 times [2023-12-22 10:34:21,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:34:21,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393063588] [2023-12-22 10:34:21,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:34:21,232 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 10:34:21,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:34:21,233 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 10:34:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:34:21,257 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 10:34:21,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:34:21,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:34:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:34:21,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:34:21,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:34:21,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393063588] [2023-12-22 10:34:21,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393063588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:34:21,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:34:21,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 10:34:21,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43468664] [2023-12-22 10:34:21,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:34:21,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:34:21,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:34:21,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:34:21,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:34:21,320 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 10:34:54,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:34:54,741 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2023-12-22 10:34:54,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:34:54,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-22 10:34:54,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:34:54,746 INFO L225 Difference]: With dead ends: 2258 [2023-12-22 10:34:54,747 INFO L226 Difference]: Without dead ends: 1505 [2023-12-22 10:34:54,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 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 10:34:54,748 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 755 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2465 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 2465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.2s IncrementalHoareTripleChecker+Time [2023-12-22 10:34:54,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 222 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 2465 Invalid, 0 Unknown, 0 Unchecked, 33.2s Time] [2023-12-22 10:34:54,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2023-12-22 10:34:54,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2023-12-22 10:34:54,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.7746010638297873) internal successors, (2669), 1504 states have internal predecessors, (2669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 10:34:54,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2669 transitions. [2023-12-22 10:34:54,785 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2669 transitions. Word has length 23 [2023-12-22 10:34:54,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:34:54,785 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 2669 transitions. [2023-12-22 10:34:54,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 10:34:54,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2669 transitions. [2023-12-22 10:34:54,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-22 10:34:54,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:34:54,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:34:54,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-22 10:34:54,989 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 10:34:54,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:34:54,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:34:54,990 INFO L85 PathProgramCache]: Analyzing trace with hash -368961615, now seen corresponding path program 1 times [2023-12-22 10:34:54,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:34:54,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700403519] [2023-12-22 10:34:54,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:34:54,991 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 10:34:54,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:34:54,992 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 10:34:54,996 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 10:34:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:34:55,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:34:55,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:34:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:34:55,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:34:55,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:34:55,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700403519] [2023-12-22 10:34:55,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700403519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:34:55,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:34:55,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 10:34:55,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974129695] [2023-12-22 10:34:55,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:34:55,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:34:55,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:34:55,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:34:55,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:34:55,227 INFO L87 Difference]: Start difference. First operand 1505 states and 2669 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 10:35:29,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:35:29,425 INFO L93 Difference]: Finished difference Result 4513 states and 8005 transitions. [2023-12-22 10:35:29,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:35:29,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-22 10:35:29,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:35:29,446 INFO L225 Difference]: With dead ends: 4513 [2023-12-22 10:35:29,446 INFO L226 Difference]: Without dead ends: 3009 [2023-12-22 10:35:29,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 86 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 10:35:29,448 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 926 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.0s IncrementalHoareTripleChecker+Time [2023-12-22 10:35:29,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 352 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2525 Invalid, 0 Unknown, 0 Unchecked, 34.0s Time] [2023-12-22 10:35:29,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2023-12-22 10:35:29,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 3007. [2023-12-22 10:35:29,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 1.5834996673320028) internal successors, (4760), 3006 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states 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 10:35:29,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4760 transitions. [2023-12-22 10:35:29,490 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4760 transitions. Word has length 88 [2023-12-22 10:35:29,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:35:29,491 INFO L495 AbstractCegarLoop]: Abstraction has 3007 states and 4760 transitions. [2023-12-22 10:35:29,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 10:35:29,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4760 transitions. [2023-12-22 10:35:29,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-22 10:35:29,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:35:29,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:29,508 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 (4)] Ended with exit code 0 [2023-12-22 10:35:29,700 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 10:35:29,701 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:35:29,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:35:29,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1435002722, now seen corresponding path program 1 times [2023-12-22 10:35:29,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:35:29,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847078513] [2023-12-22 10:35:29,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:35:29,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 10:35:29,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:35:29,703 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 10:35:29,708 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 10:35:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:35:29,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:35:29,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:35:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-22 10:35:29,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:35:29,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:35:29,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847078513] [2023-12-22 10:35:29,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847078513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:35:29,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:35:29,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 10:35:29,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139348372] [2023-12-22 10:35:29,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:35:29,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:35:29,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:35:29,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:35:29,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:35:29,948 INFO L87 Difference]: Start difference. First operand 3007 states and 4760 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 10:36:06,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:36:06,201 INFO L93 Difference]: Finished difference Result 9017 states and 14277 transitions. [2023-12-22 10:36:06,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:36:06,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-22 10:36:06,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:36:06,221 INFO L225 Difference]: With dead ends: 9017 [2023-12-22 10:36:06,221 INFO L226 Difference]: Without dead ends: 6011 [2023-12-22 10:36:06,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:36:06,226 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 726 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2488 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 2944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.1s IncrementalHoareTripleChecker+Time [2023-12-22 10:36:06,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 581 Invalid, 2944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2488 Invalid, 0 Unknown, 0 Unchecked, 36.1s Time] [2023-12-22 10:36:06,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2023-12-22 10:36:06,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 6011. [2023-12-22 10:36:06,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6011 states, 6010 states have (on average 1.388685524126456) internal successors, (8346), 6010 states have internal predecessors, (8346), 0 states have call successors, (0), 0 states 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 10:36:06,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6011 states to 6011 states and 8346 transitions. [2023-12-22 10:36:06,305 INFO L78 Accepts]: Start accepts. Automaton has 6011 states and 8346 transitions. Word has length 94 [2023-12-22 10:36:06,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:36:06,306 INFO L495 AbstractCegarLoop]: Abstraction has 6011 states and 8346 transitions. [2023-12-22 10:36:06,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 10:36:06,307 INFO L276 IsEmpty]: Start isEmpty. Operand 6011 states and 8346 transitions. [2023-12-22 10:36:06,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-22 10:36:06,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:36:06,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:06,314 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 10:36:06,515 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 10:36:06,515 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:36:06,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:36:06,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1267118915, now seen corresponding path program 1 times [2023-12-22 10:36:06,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:36:06,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985111155] [2023-12-22 10:36:06,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:36:06,517 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 10:36:06,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:36:06,519 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 10:36:06,544 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 10:36:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:36:06,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:36:06,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:36:06,762 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:36:06,762 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:36:06,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:36:06,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985111155] [2023-12-22 10:36:06,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985111155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:36:06,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:36:06,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 10:36:06,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334549993] [2023-12-22 10:36:06,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:36:06,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:36:06,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:36:06,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:36:06,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:36:06,764 INFO L87 Difference]: Start difference. First operand 6011 states and 8346 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 10:36:45,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:36:45,129 INFO L93 Difference]: Finished difference Result 17278 states and 24164 transitions. [2023-12-22 10:36:45,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:36:45,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-12-22 10:36:45,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:36:45,165 INFO L225 Difference]: With dead ends: 17278 [2023-12-22 10:36:45,165 INFO L226 Difference]: Without dead ends: 11268 [2023-12-22 10:36:45,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 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 10:36:45,175 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 665 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.1s IncrementalHoareTripleChecker+Time [2023-12-22 10:36:45,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 658 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 38.1s Time] [2023-12-22 10:36:45,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11268 states. [2023-12-22 10:36:45,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11268 to 11268. [2023-12-22 10:36:45,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11268 states, 11267 states have (on average 1.245850714475903) internal successors, (14037), 11267 states have internal predecessors, (14037), 0 states have call successors, (0), 0 states 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 10:36:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11268 states to 11268 states and 14037 transitions. [2023-12-22 10:36:45,436 INFO L78 Accepts]: Start accepts. Automaton has 11268 states and 14037 transitions. Word has length 119 [2023-12-22 10:36:45,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:36:45,437 INFO L495 AbstractCegarLoop]: Abstraction has 11268 states and 14037 transitions. [2023-12-22 10:36:45,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 10:36:45,438 INFO L276 IsEmpty]: Start isEmpty. Operand 11268 states and 14037 transitions. [2023-12-22 10:36:45,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-22 10:36:45,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:36:45,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:45,451 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 10:36:45,660 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 10:36:45,660 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:36:45,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:36:45,661 INFO L85 PathProgramCache]: Analyzing trace with hash -335580557, now seen corresponding path program 1 times [2023-12-22 10:36:45,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:36:45,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716811692] [2023-12-22 10:36:45,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:36:45,662 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 10:36:45,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:36:45,664 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 10:36:45,680 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 10:36:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:36:45,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:36:45,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:36:45,796 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:36:45,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:36:45,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:36:45,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716811692] [2023-12-22 10:36:45,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716811692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:36:45,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:36:45,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:36:45,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675910162] [2023-12-22 10:36:45,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:36:45,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:36:45,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:36:45,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:36:45,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:36:45,799 INFO L87 Difference]: Start difference. First operand 11268 states and 14037 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 10:37:32,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:37:32,838 INFO L93 Difference]: Finished difference Result 27041 states and 34197 transitions. [2023-12-22 10:37:32,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:37:32,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2023-12-22 10:37:32,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:37:32,876 INFO L225 Difference]: With dead ends: 27041 [2023-12-22 10:37:32,876 INFO L226 Difference]: Without dead ends: 16525 [2023-12-22 10:37:32,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 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 10:37:32,886 INFO L413 NwaCegarLoop]: 1431 mSDtfsCounter, 730 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2845 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 3221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 2845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.8s IncrementalHoareTripleChecker+Time [2023-12-22 10:37:32,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1438 Invalid, 3221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 2845 Invalid, 0 Unknown, 0 Unchecked, 46.8s Time] [2023-12-22 10:37:32,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16525 states. [2023-12-22 10:37:33,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16525 to 16525. [2023-12-22 10:37:33,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16525 states, 16524 states have (on average 1.2366255144032923) internal successors, (20434), 16524 states have internal predecessors, (20434), 0 states have call successors, (0), 0 states 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 10:37:33,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16525 states to 16525 states and 20434 transitions. [2023-12-22 10:37:33,088 INFO L78 Accepts]: Start accepts. Automaton has 16525 states and 20434 transitions. Word has length 164 [2023-12-22 10:37:33,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:37:33,089 INFO L495 AbstractCegarLoop]: Abstraction has 16525 states and 20434 transitions. [2023-12-22 10:37:33,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 10:37:33,091 INFO L276 IsEmpty]: Start isEmpty. Operand 16525 states and 20434 transitions. [2023-12-22 10:37:33,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-22 10:37:33,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:37:33,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:33,097 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 10:37:33,297 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 10:37:33,298 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:37:33,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:37:33,299 INFO L85 PathProgramCache]: Analyzing trace with hash -442287895, now seen corresponding path program 1 times [2023-12-22 10:37:33,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:37:33,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284904681] [2023-12-22 10:37:33,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:37:33,300 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 10:37:33,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:37:33,301 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 10:37:33,302 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 10:37:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:37:33,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 10:37:33,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:37:33,728 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:37:33,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 10:37:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:37:33,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:37:33,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284904681] [2023-12-22 10:37:33,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284904681] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 10:37:33,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 10:37:33,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 10:37:33,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948669005] [2023-12-22 10:37:33,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:37:33,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:37:33,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:37:33,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:37:33,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:37:33,978 INFO L87 Difference]: Start difference. First operand 16525 states and 20434 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 10:37:44,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 10:38:40,691 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 10:38:55,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:38:55,177 INFO L93 Difference]: Finished difference Result 34551 states and 44311 transitions. [2023-12-22 10:38:55,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:38:55,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2023-12-22 10:38:55,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:38:55,268 INFO L225 Difference]: With dead ends: 34551 [2023-12-22 10:38:55,268 INFO L226 Difference]: Without dead ends: 25537 [2023-12-22 10:38:55,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:38:55,280 INFO L413 NwaCegarLoop]: 1328 mSDtfsCounter, 753 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 3040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.9s IncrementalHoareTripleChecker+Time [2023-12-22 10:38:55,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1335 Invalid, 3040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 80.9s Time] [2023-12-22 10:38:55,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25537 states. [2023-12-22 10:38:55,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25537 to 25537. [2023-12-22 10:38:55,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25537 states, 25536 states have (on average 1.2207863408521302) internal successors, (31174), 25536 states have internal predecessors, (31174), 0 states have call successors, (0), 0 states 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 10:38:55,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25537 states to 25537 states and 31174 transitions. [2023-12-22 10:38:55,689 INFO L78 Accepts]: Start accepts. Automaton has 25537 states and 31174 transitions. Word has length 168 [2023-12-22 10:38:55,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:38:55,690 INFO L495 AbstractCegarLoop]: Abstraction has 25537 states and 31174 transitions. [2023-12-22 10:38:55,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 10:38:55,690 INFO L276 IsEmpty]: Start isEmpty. Operand 25537 states and 31174 transitions. [2023-12-22 10:38:55,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-22 10:38:55,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:38:55,692 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 10:38:55,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-22 10:38:55,895 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 10:38:55,896 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:38:55,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:38:55,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1809958062, now seen corresponding path program 1 times [2023-12-22 10:38:55,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:38:55,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460669269] [2023-12-22 10:38:55,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:38:55,898 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 10:38:55,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:38:55,899 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 10:38:55,900 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 10:38:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:38:55,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 10:38:55,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:38:57,050 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:38:57,050 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:38:57,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:38:57,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460669269] [2023-12-22 10:38:57,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460669269] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:38:57,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:38:57,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:38:57,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021654865] [2023-12-22 10:38:57,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:38:57,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 10:38:57,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:38:57,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 10:38:57,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 10:38:57,052 INFO L87 Difference]: Start difference. First operand 25537 states and 31174 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states 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 10:39:24,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:39:24,598 INFO L93 Difference]: Finished difference Result 43597 states and 53887 transitions. [2023-12-22 10:39:24,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 10:39:24,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2023-12-22 10:39:24,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:39:24,637 INFO L225 Difference]: With dead ends: 43597 [2023-12-22 10:39:24,637 INFO L226 Difference]: Without dead ends: 18778 [2023-12-22 10:39:24,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 10:39:24,650 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 682 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 2964 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 2964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2023-12-22 10:39:24,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 698 Invalid, 2964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2964 Invalid, 0 Unknown, 0 Unchecked, 27.3s Time] [2023-12-22 10:39:24,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18778 states. [2023-12-22 10:39:24,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18778 to 18778. [2023-12-22 10:39:24,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18778 states, 18777 states have (on average 1.2484422431698354) internal successors, (23442), 18777 states have internal predecessors, (23442), 0 states have call successors, (0), 0 states 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 10:39:24,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18778 states to 18778 states and 23442 transitions. [2023-12-22 10:39:24,895 INFO L78 Accepts]: Start accepts. Automaton has 18778 states and 23442 transitions. Word has length 190 [2023-12-22 10:39:24,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:39:24,895 INFO L495 AbstractCegarLoop]: Abstraction has 18778 states and 23442 transitions. [2023-12-22 10:39:24,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states 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 10:39:24,896 INFO L276 IsEmpty]: Start isEmpty. Operand 18778 states and 23442 transitions. [2023-12-22 10:39:24,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-22 10:39:24,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:39:24,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:39:24,916 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 10:39:25,101 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 10:39:25,102 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:39:25,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:39:25,102 INFO L85 PathProgramCache]: Analyzing trace with hash 187004844, now seen corresponding path program 1 times [2023-12-22 10:39:25,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:39:25,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095906740] [2023-12-22 10:39:25,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:39:25,104 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 10:39:25,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:39:25,105 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 10:39:25,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-22 10:39:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:39:25,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 10:39:25,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:39:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:39:26,665 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:39:26,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:39:26,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095906740] [2023-12-22 10:39:26,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095906740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:39:26,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:39:26,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:39:26,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224493604] [2023-12-22 10:39:26,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:39:26,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 10:39:26,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:39:26,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 10:39:26,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 10:39:26,667 INFO L87 Difference]: Start difference. First operand 18778 states and 23442 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 10:39:53,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:39:53,559 INFO L93 Difference]: Finished difference Result 36832 states and 46149 transitions. [2023-12-22 10:39:53,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 10:39:53,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 218 [2023-12-22 10:39:53,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:39:53,594 INFO L225 Difference]: With dead ends: 36832 [2023-12-22 10:39:53,594 INFO L226 Difference]: Without dead ends: 18806 [2023-12-22 10:39:53,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:39:53,606 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 1244 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.6s IncrementalHoareTripleChecker+Time [2023-12-22 10:39:53,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 1631 Invalid, 2691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 26.6s Time] [2023-12-22 10:39:53,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18806 states. [2023-12-22 10:39:53,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18806 to 18778. [2023-12-22 10:39:53,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18778 states, 18777 states have (on average 1.2481227033072375) internal successors, (23436), 18777 states have internal predecessors, (23436), 0 states have call successors, (0), 0 states 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 10:39:53,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18778 states to 18778 states and 23436 transitions. [2023-12-22 10:39:53,837 INFO L78 Accepts]: Start accepts. Automaton has 18778 states and 23436 transitions. Word has length 218 [2023-12-22 10:39:53,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:39:53,837 INFO L495 AbstractCegarLoop]: Abstraction has 18778 states and 23436 transitions. [2023-12-22 10:39:53,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 10:39:53,838 INFO L276 IsEmpty]: Start isEmpty. Operand 18778 states and 23436 transitions. [2023-12-22 10:39:53,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-22 10:39:53,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:39:53,841 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 10:39:53,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-22 10:39:54,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 10:39:54,046 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:39:54,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:39:54,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1342479840, now seen corresponding path program 1 times [2023-12-22 10:39:54,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:39:54,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614656413] [2023-12-22 10:39:54,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:39:54,050 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 10:39:54,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:39:54,051 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 10:39:54,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-22 10:39:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:39:54,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 10:39:54,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:39:54,520 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 43 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:39:54,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 10:39:54,830 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:39:54,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:39:54,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614656413] [2023-12-22 10:39:54,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614656413] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 10:39:54,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 10:39:54,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 10:39:54,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171509996] [2023-12-22 10:39:54,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:39:54,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:39:54,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:39:54,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:39:54,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:39:54,832 INFO L87 Difference]: Start difference. First operand 18778 states and 23436 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 10:41:40,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:41:40,816 INFO L93 Difference]: Finished difference Result 44314 states and 56478 transitions. [2023-12-22 10:41:40,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:41:40,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2023-12-22 10:41:40,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:41:40,860 INFO L225 Difference]: With dead ends: 44314 [2023-12-22 10:41:40,861 INFO L226 Difference]: Without dead ends: 26288 [2023-12-22 10:41:40,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:41:40,871 INFO L413 NwaCegarLoop]: 1194 mSDtfsCounter, 710 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2488 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 3131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 2488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105.7s IncrementalHoareTripleChecker+Time [2023-12-22 10:41:40,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 1200 Invalid, 3131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 2488 Invalid, 0 Unknown, 0 Unchecked, 105.7s Time] [2023-12-22 10:41:40,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26288 states. [2023-12-22 10:41:41,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26288 to 26288. [2023-12-22 10:41:41,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26288 states, 26287 states have (on average 1.271388899456005) internal successors, (33421), 26287 states have internal predecessors, (33421), 0 states have call successors, (0), 0 states 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 10:41:41,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26288 states to 26288 states and 33421 transitions. [2023-12-22 10:41:41,093 INFO L78 Accepts]: Start accepts. Automaton has 26288 states and 33421 transitions. Word has length 235 [2023-12-22 10:41:41,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:41:41,094 INFO L495 AbstractCegarLoop]: Abstraction has 26288 states and 33421 transitions. [2023-12-22 10:41:41,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 10:41:41,094 INFO L276 IsEmpty]: Start isEmpty. Operand 26288 states and 33421 transitions. [2023-12-22 10:41:41,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-12-22 10:41:41,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:41:41,097 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:41:41,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-22 10:41:41,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 10:41:41,300 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:41:41,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:41:41,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1516143257, now seen corresponding path program 1 times [2023-12-22 10:41:41,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:41:41,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995484221] [2023-12-22 10:41:41,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:41:41,302 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 10:41:41,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:41:41,303 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 10:41:41,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-22 10:41:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:41:41,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 10:41:41,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:41:41,768 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 184 proven. 78 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-22 10:41:41,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 10:41:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-22 10:41:42,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:41:42,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995484221] [2023-12-22 10:41:42,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995484221] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 10:41:42,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 10:41:42,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 10:41:42,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169018424] [2023-12-22 10:41:42,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:41:42,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:41:42,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:41:42,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:41:42,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:41:42,119 INFO L87 Difference]: Start difference. First operand 26288 states and 33421 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 10:42:51,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:42:51,491 INFO L93 Difference]: Finished difference Result 64591 states and 83849 transitions. [2023-12-22 10:42:51,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:42:51,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 314 [2023-12-22 10:42:51,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:42:51,534 INFO L225 Difference]: With dead ends: 64591 [2023-12-22 10:42:51,534 INFO L226 Difference]: Without dead ends: 39055 [2023-12-22 10:42:51,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:42:51,547 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 718 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 3052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.0s IncrementalHoareTripleChecker+Time [2023-12-22 10:42:51,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 423 Invalid, 3052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 69.0s Time] [2023-12-22 10:42:51,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39055 states. [2023-12-22 10:42:51,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39055 to 38304. [2023-12-22 10:42:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38304 states, 38303 states have (on average 1.2570294754980027) internal successors, (48148), 38303 states have internal predecessors, (48148), 0 states have call successors, (0), 0 states 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 10:42:51,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38304 states to 38304 states and 48148 transitions. [2023-12-22 10:42:51,969 INFO L78 Accepts]: Start accepts. Automaton has 38304 states and 48148 transitions. Word has length 314 [2023-12-22 10:42:51,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:42:51,969 INFO L495 AbstractCegarLoop]: Abstraction has 38304 states and 48148 transitions. [2023-12-22 10:42:51,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 10:42:51,969 INFO L276 IsEmpty]: Start isEmpty. Operand 38304 states and 48148 transitions. [2023-12-22 10:42:51,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2023-12-22 10:42:51,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:42:51,972 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:51,977 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 (12)] Ended with exit code 0 [2023-12-22 10:42:52,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 10:42:52,177 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:42:52,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:42:52,178 INFO L85 PathProgramCache]: Analyzing trace with hash 877922141, now seen corresponding path program 1 times [2023-12-22 10:42:52,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:42:52,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270744032] [2023-12-22 10:42:52,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:42:52,179 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 10:42:52,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:42:52,180 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 10:42:52,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-22 10:42:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:42:52,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:42:52,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:42:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-22 10:42:52,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:42:52,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:42:52,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270744032] [2023-12-22 10:42:52,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270744032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:42:52,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:42:52,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:42:52,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058752976] [2023-12-22 10:42:52,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:42:52,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:42:52,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:42:52,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:42:52,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:42:52,408 INFO L87 Difference]: Start difference. First operand 38304 states and 48148 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 10:43:32,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:43:32,592 INFO L93 Difference]: Finished difference Result 75856 states and 95539 transitions. [2023-12-22 10:43:32,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:43:32,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 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 318 [2023-12-22 10:43:32,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:43:32,632 INFO L225 Difference]: With dead ends: 75856 [2023-12-22 10:43:32,632 INFO L226 Difference]: Without dead ends: 38304 [2023-12-22 10:43:32,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 316 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 10:43:32,648 INFO L413 NwaCegarLoop]: 1303 mSDtfsCounter, 711 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 3027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.8s IncrementalHoareTripleChecker+Time [2023-12-22 10:43:32,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1309 Invalid, 3027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 39.8s Time] [2023-12-22 10:43:32,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38304 states. [2023-12-22 10:43:32,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38304 to 38304. [2023-12-22 10:43:32,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38304 states, 38303 states have (on average 1.2280500221914732) internal successors, (47038), 38303 states have internal predecessors, (47038), 0 states have call successors, (0), 0 states 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 10:43:33,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38304 states to 38304 states and 47038 transitions. [2023-12-22 10:43:33,064 INFO L78 Accepts]: Start accepts. Automaton has 38304 states and 47038 transitions. Word has length 318 [2023-12-22 10:43:33,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:43:33,065 INFO L495 AbstractCegarLoop]: Abstraction has 38304 states and 47038 transitions. [2023-12-22 10:43:33,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 10:43:33,065 INFO L276 IsEmpty]: Start isEmpty. Operand 38304 states and 47038 transitions. [2023-12-22 10:43:33,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-12-22 10:43:33,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:43:33,069 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:33,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-22 10:43:33,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 10:43:33,273 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:43:33,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:43:33,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1455899559, now seen corresponding path program 1 times [2023-12-22 10:43:33,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:43:33,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044694008] [2023-12-22 10:43:33,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:43:33,275 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 10:43:33,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:43:33,276 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 10:43:33,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-22 10:43:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:43:33,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:43:33,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:43:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-22 10:43:33,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:43:33,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:43:33,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044694008] [2023-12-22 10:43:33,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044694008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:43:33,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:43:33,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:43:33,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150702051] [2023-12-22 10:43:33,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:43:33,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:43:33,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:43:33,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:43:33,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:43:33,578 INFO L87 Difference]: Start difference. First operand 38304 states and 47038 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 10:44:10,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:44:10,774 INFO L93 Difference]: Finished difference Result 102141 states and 126118 transitions. [2023-12-22 10:44:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:44:10,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 334 [2023-12-22 10:44:10,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:44:10,884 INFO L225 Difference]: With dead ends: 102141 [2023-12-22 10:44:10,885 INFO L226 Difference]: Without dead ends: 63838 [2023-12-22 10:44:10,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 332 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 10:44:10,926 INFO L413 NwaCegarLoop]: 1299 mSDtfsCounter, 721 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.7s IncrementalHoareTripleChecker+Time [2023-12-22 10:44:10,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 1306 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 36.7s Time] [2023-12-22 10:44:10,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63838 states. [2023-12-22 10:44:11,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63838 to 59332. [2023-12-22 10:44:11,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59332 states, 59331 states have (on average 1.174681026781952) internal successors, (69695), 59331 states have internal predecessors, (69695), 0 states have call successors, (0), 0 states 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 10:44:11,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59332 states to 59332 states and 69695 transitions. [2023-12-22 10:44:11,627 INFO L78 Accepts]: Start accepts. Automaton has 59332 states and 69695 transitions. Word has length 334 [2023-12-22 10:44:11,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:44:11,628 INFO L495 AbstractCegarLoop]: Abstraction has 59332 states and 69695 transitions. [2023-12-22 10:44:11,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 10:44:11,628 INFO L276 IsEmpty]: Start isEmpty. Operand 59332 states and 69695 transitions. [2023-12-22 10:44:11,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-22 10:44:11,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:44:11,681 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 10:44:11,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-22 10:44:11,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 10:44:11,882 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:44:11,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:44:11,882 INFO L85 PathProgramCache]: Analyzing trace with hash -978818921, now seen corresponding path program 1 times [2023-12-22 10:44:11,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:44:11,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783035324] [2023-12-22 10:44:11,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:44:11,884 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 10:44:11,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:44:11,884 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 10:44:11,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-22 10:44:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:44:11,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 10:44:11,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:44:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 43 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:44:12,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 10:44:12,816 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:44:12,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:44:12,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783035324] [2023-12-22 10:44:12,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783035324] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 10:44:12,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 10:44:12,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 10:44:12,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561853836] [2023-12-22 10:44:12,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:44:12,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:44:12,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:44:12,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:44:12,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:44:12,818 INFO L87 Difference]: Start difference. First operand 59332 states and 69695 transitions. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states 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 10:44:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:44:46,293 INFO L93 Difference]: Finished difference Result 130679 states and 153426 transitions. [2023-12-22 10:44:46,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:44:46,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 349 [2023-12-22 10:44:46,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:44:46,372 INFO L225 Difference]: With dead ends: 130679 [2023-12-22 10:44:46,373 INFO L226 Difference]: Without dead ends: 72099 [2023-12-22 10:44:46,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 693 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:44:46,391 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 582 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2023-12-22 10:44:46,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 1348 Invalid, 2666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 32.9s Time] [2023-12-22 10:44:46,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72099 states. [2023-12-22 10:44:47,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72099 to 70597. [2023-12-22 10:44:47,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70597 states, 70596 states have (on average 1.16386197518273) internal successors, (82164), 70596 states have internal predecessors, (82164), 0 states have call successors, (0), 0 states 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 10:44:47,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70597 states to 70597 states and 82164 transitions. [2023-12-22 10:44:47,225 INFO L78 Accepts]: Start accepts. Automaton has 70597 states and 82164 transitions. Word has length 349 [2023-12-22 10:44:47,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:44:47,226 INFO L495 AbstractCegarLoop]: Abstraction has 70597 states and 82164 transitions. [2023-12-22 10:44:47,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states 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 10:44:47,226 INFO L276 IsEmpty]: Start isEmpty. Operand 70597 states and 82164 transitions. [2023-12-22 10:44:47,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-12-22 10:44:47,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:44:47,239 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 10:44:47,243 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 (15)] Ended with exit code 0 [2023-12-22 10:44:47,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 10:44:47,443 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:44:47,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:44:47,443 INFO L85 PathProgramCache]: Analyzing trace with hash -966734116, now seen corresponding path program 1 times [2023-12-22 10:44:47,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:44:47,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580609917] [2023-12-22 10:44:47,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:44:47,522 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 10:44:47,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:44:47,523 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 10:44:47,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-22 10:44:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:44:47,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:44:47,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:44:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-22 10:44:47,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:44:47,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:44:47,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580609917] [2023-12-22 10:44:47,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580609917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:44:47,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:44:47,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:44:47,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459418051] [2023-12-22 10:44:47,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:44:47,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:44:47,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:44:47,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:44:47,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:44:47,748 INFO L87 Difference]: Start difference. First operand 70597 states and 82164 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 10:45:21,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:45:21,276 INFO L93 Difference]: Finished difference Result 169731 states and 199870 transitions. [2023-12-22 10:45:21,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:45:21,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2023-12-22 10:45:21,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:45:21,437 INFO L225 Difference]: With dead ends: 169731 [2023-12-22 10:45:21,437 INFO L226 Difference]: Without dead ends: 99886 [2023-12-22 10:45:21,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 354 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 10:45:21,473 INFO L413 NwaCegarLoop]: 1334 mSDtfsCounter, 740 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.7s IncrementalHoareTripleChecker+Time [2023-12-22 10:45:21,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 1340 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [760 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 32.7s Time] [2023-12-22 10:45:21,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99886 states. [2023-12-22 10:45:22,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99886 to 98384. [2023-12-22 10:45:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98384 states, 98383 states have (on average 1.142290842930181) internal successors, (112382), 98383 states have internal predecessors, (112382), 0 states have call successors, (0), 0 states 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 10:45:22,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98384 states to 98384 states and 112382 transitions. [2023-12-22 10:45:22,759 INFO L78 Accepts]: Start accepts. Automaton has 98384 states and 112382 transitions. Word has length 356 [2023-12-22 10:45:22,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:45:22,772 INFO L495 AbstractCegarLoop]: Abstraction has 98384 states and 112382 transitions. [2023-12-22 10:45:22,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 10:45:22,773 INFO L276 IsEmpty]: Start isEmpty. Operand 98384 states and 112382 transitions. [2023-12-22 10:45:22,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-22 10:45:22,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:45:22,775 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 10:45:22,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-22 10:45:22,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 10:45:22,979 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:45:22,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:45:22,979 INFO L85 PathProgramCache]: Analyzing trace with hash -21058650, now seen corresponding path program 1 times [2023-12-22 10:45:22,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:45:22,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205963729] [2023-12-22 10:45:22,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:45:22,981 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 10:45:22,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:45:22,982 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 10:45:22,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-22 10:45:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:45:23,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 10:45:23,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:45:23,635 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-22 10:45:23,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:45:23,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:45:23,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205963729] [2023-12-22 10:45:23,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205963729] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:45:23,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:45:23,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:45:23,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690168783] [2023-12-22 10:45:23,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:45:23,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:45:23,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:45:23,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:45:23,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:45:23,637 INFO L87 Difference]: Start difference. First operand 98384 states and 112382 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states 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 10:45:53,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:45:53,971 INFO L93 Difference]: Finished difference Result 199020 states and 227209 transitions. [2023-12-22 10:45:53,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:45:53,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 359 [2023-12-22 10:45:53,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:45:54,093 INFO L225 Difference]: With dead ends: 199020 [2023-12-22 10:45:54,094 INFO L226 Difference]: Without dead ends: 101388 [2023-12-22 10:45:54,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 357 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 10:45:54,133 INFO L413 NwaCegarLoop]: 1395 mSDtfsCounter, 656 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2023-12-22 10:45:54,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1402 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 29.6s Time] [2023-12-22 10:45:54,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101388 states. [2023-12-22 10:45:55,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101388 to 100637. [2023-12-22 10:45:55,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100637 states, 100636 states have (on average 1.1390456695417146) internal successors, (114629), 100636 states have internal predecessors, (114629), 0 states have call successors, (0), 0 states 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 10:45:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100637 states to 100637 states and 114629 transitions. [2023-12-22 10:45:55,427 INFO L78 Accepts]: Start accepts. Automaton has 100637 states and 114629 transitions. Word has length 359 [2023-12-22 10:45:55,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:45:55,428 INFO L495 AbstractCegarLoop]: Abstraction has 100637 states and 114629 transitions. [2023-12-22 10:45:55,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states 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 10:45:55,428 INFO L276 IsEmpty]: Start isEmpty. Operand 100637 states and 114629 transitions. [2023-12-22 10:45:55,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-22 10:45:55,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:45:55,431 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 10:45:55,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-22 10:45:55,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 10:45:55,632 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:45:55,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:45:55,632 INFO L85 PathProgramCache]: Analyzing trace with hash 527802730, now seen corresponding path program 1 times [2023-12-22 10:45:55,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:45:55,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120395549] [2023-12-22 10:45:55,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:45:55,634 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 10:45:55,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:45:55,635 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 10:45:55,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-22 10:45:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:45:55,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 10:45:55,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:45:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 43 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:45:57,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 10:45:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:45:59,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:45:59,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120395549] [2023-12-22 10:45:59,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120395549] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 10:45:59,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 10:45:59,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 10:45:59,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864595336] [2023-12-22 10:45:59,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:45:59,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:45:59,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:45:59,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:45:59,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:45:59,355 INFO L87 Difference]: Start difference. First operand 100637 states and 114629 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 10:47:20,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:47:20,860 INFO L93 Difference]: Finished difference Result 204277 states and 233692 transitions. [2023-12-22 10:47:20,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:47:20,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 359 [2023-12-22 10:47:20,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:47:21,088 INFO L225 Difference]: With dead ends: 204277 [2023-12-22 10:47:21,088 INFO L226 Difference]: Without dead ends: 104392 [2023-12-22 10:47:21,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 713 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:47:21,126 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 576 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2407 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 3128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 2407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.6s IncrementalHoareTripleChecker+Time [2023-12-22 10:47:21,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 423 Invalid, 3128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 2407 Invalid, 0 Unknown, 0 Unchecked, 80.6s Time] [2023-12-22 10:47:21,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104392 states. [2023-12-22 10:47:22,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104392 to 103641. [2023-12-22 10:47:22,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103641 states, 103640 states have (on average 1.135806638363566) internal successors, (117715), 103640 states have internal predecessors, (117715), 0 states have call successors, (0), 0 states 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 10:47:22,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103641 states to 103641 states and 117715 transitions. [2023-12-22 10:47:22,438 INFO L78 Accepts]: Start accepts. Automaton has 103641 states and 117715 transitions. Word has length 359 [2023-12-22 10:47:22,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:47:22,439 INFO L495 AbstractCegarLoop]: Abstraction has 103641 states and 117715 transitions. [2023-12-22 10:47:22,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 10:47:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 103641 states and 117715 transitions. [2023-12-22 10:47:22,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-12-22 10:47:22,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:47:22,441 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 10:47:22,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-22 10:47:22,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 10:47:22,646 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:47:22,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:47:22,646 INFO L85 PathProgramCache]: Analyzing trace with hash -38809804, now seen corresponding path program 1 times [2023-12-22 10:47:22,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:47:22,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658165243] [2023-12-22 10:47:22,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:47:22,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 10:47:22,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:47:22,657 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 10:47:22,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-22 10:47:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:47:22,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 10:47:22,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:47:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 43 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:47:25,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 10:47:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 159 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:47:28,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:47:28,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658165243] [2023-12-22 10:47:28,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658165243] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 10:47:28,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 10:47:28,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 10:47:28,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430238260] [2023-12-22 10:47:28,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 10:47:28,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 10:47:28,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:47:28,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 10:47:28,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-22 10:47:28,376 INFO L87 Difference]: Start difference. First operand 103641 states and 117715 transitions. Second operand has 7 states, 7 states have (on average 89.28571428571429) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 10:48:00,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:48:00,943 INFO L93 Difference]: Finished difference Result 212641 states and 241061 transitions. [2023-12-22 10:48:00,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-22 10:48:00,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 89.28571428571429) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 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 363 [2023-12-22 10:48:00,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:48:01,089 INFO L225 Difference]: With dead ends: 212641 [2023-12-22 10:48:01,090 INFO L226 Difference]: Without dead ends: 109752 [2023-12-22 10:48:01,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 719 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-22 10:48:01,130 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 4851 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 6913 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4851 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 7271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 6913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.5s IncrementalHoareTripleChecker+Time [2023-12-22 10:48:01,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4851 Valid, 1164 Invalid, 7271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 6913 Invalid, 0 Unknown, 0 Unchecked, 31.5s Time] [2023-12-22 10:48:01,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109752 states. [2023-12-22 10:48:02,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109752 to 106645. [2023-12-22 10:48:02,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106645 states, 106644 states have (on average 1.130387082254979) internal successors, (120549), 106644 states have internal predecessors, (120549), 0 states have call successors, (0), 0 states 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 10:48:02,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106645 states to 106645 states and 120549 transitions. [2023-12-22 10:48:02,274 INFO L78 Accepts]: Start accepts. Automaton has 106645 states and 120549 transitions. Word has length 363 [2023-12-22 10:48:02,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:48:02,274 INFO L495 AbstractCegarLoop]: Abstraction has 106645 states and 120549 transitions. [2023-12-22 10:48:02,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.28571428571429) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 10:48:02,274 INFO L276 IsEmpty]: Start isEmpty. Operand 106645 states and 120549 transitions. [2023-12-22 10:48:02,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2023-12-22 10:48:02,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:48:02,277 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:02,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-22 10:48:02,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 10:48:02,501 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:48:02,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:48:02,501 INFO L85 PathProgramCache]: Analyzing trace with hash 270402839, now seen corresponding path program 1 times [2023-12-22 10:48:02,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:48:02,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973643701] [2023-12-22 10:48:02,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:48:02,503 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 10:48:02,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:48:02,504 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 10:48:02,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-22 10:48:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:48:02,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:48:02,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:48:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-22 10:48:02,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:48:02,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:48:02,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973643701] [2023-12-22 10:48:02,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973643701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:48:02,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:48:02,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:48:02,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717452088] [2023-12-22 10:48:02,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:48:02,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:48:02,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:48:02,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:48:02,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:48:02,746 INFO L87 Difference]: Start difference. First operand 106645 states and 120549 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-22 10:48:06,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:48:06,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 371 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 10:48:06,091 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 141 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-22 10:48:06,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 550 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-22 10:48:06,092 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-22 10:48:06,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-22 10:48:06,109 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 (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 10:48:06,109 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 10:48:06,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 10:48:06,294 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (106645states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (6739 states constructed, input type IntersectNwa). [2023-12-22 10:48:06,298 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:48:06,299 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 10:48:06,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 10:48:06 BoogieIcfgContainer [2023-12-22 10:48:06,301 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 10:48:06,301 INFO L158 Benchmark]: Toolchain (without parser) took 849865.99ms. Allocated memory was 265.3MB in the beginning and 1.2GB in the end (delta: 980.4MB). Free memory was 205.0MB in the beginning and 588.6MB in the end (delta: -383.6MB). Peak memory consumption was 972.8MB. Max. memory is 8.0GB. [2023-12-22 10:48:06,301 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory was 147.9MB in the beginning and 147.7MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 10:48:06,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1180.87ms. Allocated memory is still 265.3MB. Free memory was 204.5MB in the beginning and 102.9MB in the end (delta: 101.7MB). Peak memory consumption was 103.2MB. Max. memory is 8.0GB. [2023-12-22 10:48:06,302 INFO L158 Benchmark]: Boogie Procedure Inliner took 160.77ms. Allocated memory is still 265.3MB. Free memory was 102.4MB in the beginning and 182.0MB in the end (delta: -79.7MB). Peak memory consumption was 7.4MB. Max. memory is 8.0GB. [2023-12-22 10:48:06,302 INFO L158 Benchmark]: Boogie Preprocessor took 209.92ms. Allocated memory is still 265.3MB. Free memory was 182.0MB in the beginning and 145.8MB in the end (delta: 36.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-22 10:48:06,302 INFO L158 Benchmark]: RCFGBuilder took 22652.84ms. Allocated memory was 265.3MB in the beginning and 499.1MB in the end (delta: 233.8MB). Free memory was 145.8MB in the beginning and 407.7MB in the end (delta: -261.8MB). Peak memory consumption was 169.7MB. Max. memory is 8.0GB. [2023-12-22 10:48:06,302 INFO L158 Benchmark]: TraceAbstraction took 825656.51ms. Allocated memory was 499.1MB in the beginning and 1.2GB in the end (delta: 746.6MB). Free memory was 407.1MB in the beginning and 588.6MB in the end (delta: -181.4MB). Peak memory consumption was 940.0MB. Max. memory is 8.0GB. [2023-12-22 10:48:06,303 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory was 147.9MB in the beginning and 147.7MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1180.87ms. Allocated memory is still 265.3MB. Free memory was 204.5MB in the beginning and 102.9MB in the end (delta: 101.7MB). Peak memory consumption was 103.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 160.77ms. Allocated memory is still 265.3MB. Free memory was 102.4MB in the beginning and 182.0MB in the end (delta: -79.7MB). Peak memory consumption was 7.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 209.92ms. Allocated memory is still 265.3MB. Free memory was 182.0MB in the beginning and 145.8MB in the end (delta: 36.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * RCFGBuilder took 22652.84ms. Allocated memory was 265.3MB in the beginning and 499.1MB in the end (delta: 233.8MB). Free memory was 145.8MB in the beginning and 407.7MB in the end (delta: -261.8MB). Peak memory consumption was 169.7MB. Max. memory is 8.0GB. * TraceAbstraction took 825656.51ms. Allocated memory was 499.1MB in the beginning and 1.2GB in the end (delta: 746.6MB). Free memory was 407.1MB in the beginning and 588.6MB in the end (delta: -181.4MB). Peak memory consumption was 940.0MB. 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: 94]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 94). Cancelled while NwaCegarLoop was constructing difference of abstraction (106645states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (6739 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 756 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 825.6s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 794.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16887 SdHoareTripleChecker+Valid, 784.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16887 mSDsluCounter, 18818 SdHoareTripleChecker+Invalid, 684.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1546 mSDsCounter, 7903 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47075 IncrementalHoareTripleChecker+Invalid, 54978 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7903 mSolverCounterUnsat, 17272 mSDtfsCounter, 47075 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6214 GetRequests, 6176 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106645occurred in iteration=18, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 12900 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 16.2s InterpolantComputationTime, 4447 NumberOfCodeBlocks, 4447 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 6210 ConstructedInterpolants, 0 QuantifiedInterpolants, 28471 SizeOfPredicates, 13 NumberOfNonLiveVariables, 5379 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 25 InterpolantComputations, 18 PerfectInterpolantSequences, 3163/3788 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