/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_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 10:14:06,120 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 10:14:06,185 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 10:14:06,191 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 10:14:06,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 10:14:06,213 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 10:14:06,214 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 10:14:06,214 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 10:14:06,214 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 10:14:06,217 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 10:14:06,217 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 10:14:06,218 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 10:14:06,218 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 10:14:06,219 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 10:14:06,219 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 10:14:06,220 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 10:14:06,220 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 10:14:06,220 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 10:14:06,220 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 10:14:06,220 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 10:14:06,220 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 10:14:06,221 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 10:14:06,221 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 10:14:06,221 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 10:14:06,221 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 10:14:06,221 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 10:14:06,221 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 10:14:06,221 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 10:14:06,222 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 10:14:06,222 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 10:14:06,223 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 10:14:06,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 10:14:06,223 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 10:14:06,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 10:14:06,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 10:14:06,223 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 10:14:06,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 10:14:06,223 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 10:14:06,223 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 10:14:06,223 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 10:14:06,224 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 10:14:06,224 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 10:14:06,224 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 10:14:06,224 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 10:14:06,224 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 10:14:06,224 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 10:14:06,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 10:14:06,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 10:14:06,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 10:14:06,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 10:14:06,433 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 10:14:06,436 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 10:14:06,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16.c [2023-12-22 10:14:07,508 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 10:14:07,868 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 10:14:07,868 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label16.c [2023-12-22 10:14:07,891 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb921564d/91249ddc77914f969019da35576d43d9/FLAG7444cd91f [2023-12-22 10:14:07,903 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb921564d/91249ddc77914f969019da35576d43d9 [2023-12-22 10:14:07,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 10:14:07,906 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 10:14:07,908 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 10:14:07,909 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 10:14:07,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 10:14:07,912 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:14:07" (1/1) ... [2023-12-22 10:14:07,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@621c0cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:07, skipping insertion in model container [2023-12-22 10:14:07,913 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:14:07" (1/1) ... [2023-12-22 10:14:07,997 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 10:14:08,179 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_label16.c[8006,8019] [2023-12-22 10:14:08,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 10:14:08,672 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 10:14:08,691 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_label16.c[8006,8019] [2023-12-22 10:14:09,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 10:14:09,052 INFO L206 MainTranslator]: Completed translation [2023-12-22 10:14:09,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:09 WrapperNode [2023-12-22 10:14:09,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 10:14:09,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 10:14:09,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 10:14:09,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 10:14:09,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:09" (1/1) ... [2023-12-22 10:14:09,108 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:09" (1/1) ... [2023-12-22 10:14:09,207 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4756 [2023-12-22 10:14:09,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 10:14:09,208 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 10:14:09,208 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 10:14:09,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 10:14:09,215 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:09" (1/1) ... [2023-12-22 10:14:09,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:09" (1/1) ... [2023-12-22 10:14:09,249 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:09" (1/1) ... [2023-12-22 10:14:09,305 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 10:14:09,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:09" (1/1) ... [2023-12-22 10:14:09,306 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:09" (1/1) ... [2023-12-22 10:14:09,405 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:09" (1/1) ... [2023-12-22 10:14:09,426 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:09" (1/1) ... [2023-12-22 10:14:09,449 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:09" (1/1) ... [2023-12-22 10:14:09,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:09" (1/1) ... [2023-12-22 10:14:09,494 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 10:14:09,495 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 10:14:09,495 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 10:14:09,495 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 10:14:09,496 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:09" (1/1) ... [2023-12-22 10:14:09,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 10:14:09,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 10:14:09,524 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 10:14:09,583 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 10:14:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 10:14:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 10:14:09,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 10:14:09,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 10:14:09,641 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 10:14:09,643 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 10:14:35,764 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 10:14:35,820 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 10:14:35,820 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 10:14:35,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:14:35 BoogieIcfgContainer [2023-12-22 10:14:35,820 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 10:14:35,822 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 10:14:35,822 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 10:14:35,824 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 10:14:35,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:14:07" (1/3) ... [2023-12-22 10:14:35,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5691a3be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:14:35, skipping insertion in model container [2023-12-22 10:14:35,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:14:09" (2/3) ... [2023-12-22 10:14:35,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5691a3be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:14:35, skipping insertion in model container [2023-12-22 10:14:35,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:14:35" (3/3) ... [2023-12-22 10:14:35,825 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label16.c [2023-12-22 10:14:35,836 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 10:14:35,836 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 10:14:35,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 10:14:35,908 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;@1229216e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 10:14:35,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 10:14:35,916 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 10:14:35,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-22 10:14:35,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:14:35,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:14:35,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:14:35,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:14:35,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1355723529, now seen corresponding path program 1 times [2023-12-22 10:14:35,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:14:35,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902334544] [2023-12-22 10:14:35,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:14:35,943 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 10:14:35,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:14:35,945 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 10:14:35,974 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 10:14:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:14:36,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 10:14:36,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:14:36,035 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 10:14:36,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:14:36,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:14:36,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902334544] [2023-12-22 10:14:36,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902334544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:14:36,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:14:36,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 10:14:36,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065612630] [2023-12-22 10:14:36,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:14:36,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 10:14:36,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:14:36,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 10:14:36,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 10:14:36,065 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 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 10:14:36,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:14:36,138 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2023-12-22 10:14:36,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 10:14:36,140 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-22 10:14:36,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:14:36,150 INFO L225 Difference]: With dead ends: 1511 [2023-12-22 10:14:36,150 INFO L226 Difference]: Without dead ends: 754 [2023-12-22 10:14:36,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 63 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 10:14:36,156 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 10:14:36,156 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 10:14:36,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-22 10:14:36,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-12-22 10:14:36,207 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 10:14:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2023-12-22 10:14:36,210 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 64 [2023-12-22 10:14:36,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:14:36,210 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2023-12-22 10:14:36,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 10:14:36,211 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2023-12-22 10:14:36,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-22 10:14:36,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:14:36,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:14:36,220 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 10:14:36,415 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 10:14:36,415 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:14:36,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:14:36,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1359935174, now seen corresponding path program 1 times [2023-12-22 10:14:36,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:14:36,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936734113] [2023-12-22 10:14:36,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:14:36,417 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 10:14:36,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:14:36,420 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 10:14:36,422 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 10:14:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:14:36,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:14:36,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:14:36,595 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 10:14:36,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:14:36,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:14:36,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936734113] [2023-12-22 10:14:36,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936734113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:14:36,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:14:36,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 10:14:36,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001953317] [2023-12-22 10:14:36,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:14:36,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:14:36,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:14:36,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:14:36,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:14:36,598 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 10:15:09,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:15:09,632 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2023-12-22 10:15:09,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:15:09,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-22 10:15:09,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:15:09,639 INFO L225 Difference]: With dead ends: 2258 [2023-12-22 10:15:09,639 INFO L226 Difference]: Without dead ends: 1505 [2023-12-22 10:15:09,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:15:09,642 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 731 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2023-12-22 10:15:09,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 545 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 32.9s Time] [2023-12-22 10:15:09,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2023-12-22 10:15:09,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2023-12-22 10:15:09,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.5591755319148937) internal successors, (2345), 1504 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states 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 10:15:09,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2345 transitions. [2023-12-22 10:15:09,683 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2345 transitions. Word has length 64 [2023-12-22 10:15:09,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:15:09,683 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 2345 transitions. [2023-12-22 10:15:09,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 10:15:09,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2345 transitions. [2023-12-22 10:15:09,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-22 10:15:09,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:15:09,690 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:15:09,692 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 10:15:09,890 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 10:15:09,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:15:09,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:15:09,896 INFO L85 PathProgramCache]: Analyzing trace with hash 545914058, now seen corresponding path program 1 times [2023-12-22 10:15:09,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:15:09,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695168647] [2023-12-22 10:15:09,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:15:09,898 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 10:15:09,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:15:09,899 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 10:15:09,900 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 (4)] Waiting until timeout for monitored process [2023-12-22 10:15:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:15:09,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 10:15:09,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:15:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:15:10,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:15:10,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:15:10,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695168647] [2023-12-22 10:15:10,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695168647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:15:10,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:15:10,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:15:10,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824782336] [2023-12-22 10:15:10,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:15:10,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 10:15:10,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:15:10,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 10:15:10,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 10:15:10,694 INFO L87 Difference]: Start difference. First operand 1505 states and 2345 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 10:15:34,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:15:34,845 INFO L93 Difference]: Finished difference Result 3794 states and 5630 transitions. [2023-12-22 10:15:34,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 10:15:34,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2023-12-22 10:15:34,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:15:34,851 INFO L225 Difference]: With dead ends: 3794 [2023-12-22 10:15:34,851 INFO L226 Difference]: Without dead ends: 2256 [2023-12-22 10:15:34,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 132 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 10:15:34,853 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 682 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 2964 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 3108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2023-12-22 10:15:34,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 698 Invalid, 3108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2964 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time] [2023-12-22 10:15:34,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2023-12-22 10:15:34,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2256. [2023-12-22 10:15:34,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.3778270509977828) internal successors, (3107), 2255 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states 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 10:15:34,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 3107 transitions. [2023-12-22 10:15:34,877 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 3107 transitions. Word has length 135 [2023-12-22 10:15:34,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:15:34,877 INFO L495 AbstractCegarLoop]: Abstraction has 2256 states and 3107 transitions. [2023-12-22 10:15:34,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 10:15:34,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 3107 transitions. [2023-12-22 10:15:34,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-22 10:15:34,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:15:34,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:15:34,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-22 10:15:35,083 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 10:15:35,084 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:15:35,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:15:35,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1158232741, now seen corresponding path program 1 times [2023-12-22 10:15:35,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:15:35,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494816889] [2023-12-22 10:15:35,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:15:35,086 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 10:15:35,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:15:35,087 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 10:15:35,104 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 10:15:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:15:35,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 10:15:35,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:15:35,622 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:15:35,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:15:35,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:15:35,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494816889] [2023-12-22 10:15:35,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494816889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:15:35,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:15:35,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 10:15:35,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459627681] [2023-12-22 10:15:35,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:15:35,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:15:35,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:15:35,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:15:35,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:15:35,624 INFO L87 Difference]: Start difference. First operand 2256 states and 3107 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 10:16:12,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:16:12,187 INFO L93 Difference]: Finished difference Result 5262 states and 7794 transitions. [2023-12-22 10:16:12,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:16:12,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-12-22 10:16:12,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:16:12,198 INFO L225 Difference]: With dead ends: 5262 [2023-12-22 10:16:12,199 INFO L226 Difference]: Without dead ends: 3758 [2023-12-22 10:16:12,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 206 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 10:16:12,202 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 609 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 3005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.4s IncrementalHoareTripleChecker+Time [2023-12-22 10:16:12,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 696 Invalid, 3005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 36.4s Time] [2023-12-22 10:16:12,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2023-12-22 10:16:12,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3758. [2023-12-22 10:16:12,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 3757 states have (on average 1.282672344956082) internal successors, (4819), 3757 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states 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 10:16:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 4819 transitions. [2023-12-22 10:16:12,246 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 4819 transitions. Word has length 208 [2023-12-22 10:16:12,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:16:12,247 INFO L495 AbstractCegarLoop]: Abstraction has 3758 states and 4819 transitions. [2023-12-22 10:16:12,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 10:16:12,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 4819 transitions. [2023-12-22 10:16:12,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-12-22 10:16:12,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:16:12,249 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:16:12,262 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 10:16:12,452 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 10:16:12,453 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:16:12,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:16:12,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1115001099, now seen corresponding path program 1 times [2023-12-22 10:16:12,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:16:12,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621550663] [2023-12-22 10:16:12,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:16:12,455 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 10:16:12,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:16:12,456 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 10:16:12,468 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 10:16:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:16:12,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 10:16:12,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:16:12,853 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 125 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:16:12,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 10:16:13,183 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:16:13,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:16:13,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621550663] [2023-12-22 10:16:13,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621550663] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 10:16:13,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 10:16:13,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 10:16:13,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832072839] [2023-12-22 10:16:13,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:16:13,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:16:13,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:16:13,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:16:13,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:16:13,185 INFO L87 Difference]: Start difference. First operand 3758 states and 4819 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 10:18:01,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:18:01,518 INFO L93 Difference]: Finished difference Result 9768 states and 12942 transitions. [2023-12-22 10:18:01,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:18:01,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 276 [2023-12-22 10:18:01,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:18:01,566 INFO L225 Difference]: With dead ends: 9768 [2023-12-22 10:18:01,567 INFO L226 Difference]: Without dead ends: 6762 [2023-12-22 10:18:01,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 547 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 10:18:01,571 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 761 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2351 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 102.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 2351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.2s IncrementalHoareTripleChecker+Time [2023-12-22 10:18:01,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 863 Invalid, 3141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [790 Valid, 2351 Invalid, 0 Unknown, 0 Unchecked, 108.2s Time] [2023-12-22 10:18:01,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2023-12-22 10:18:01,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 6762. [2023-12-22 10:18:01,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6762 states, 6761 states have (on average 1.288566780062121) internal successors, (8712), 6761 states have internal predecessors, (8712), 0 states have call successors, (0), 0 states 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 10:18:01,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6762 states to 6762 states and 8712 transitions. [2023-12-22 10:18:01,670 INFO L78 Accepts]: Start accepts. Automaton has 6762 states and 8712 transitions. Word has length 276 [2023-12-22 10:18:01,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:18:01,670 INFO L495 AbstractCegarLoop]: Abstraction has 6762 states and 8712 transitions. [2023-12-22 10:18:01,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 10:18:01,671 INFO L276 IsEmpty]: Start isEmpty. Operand 6762 states and 8712 transitions. [2023-12-22 10:18:01,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-22 10:18:01,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:18:01,680 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 10:18:01,686 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 10:18:01,884 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 10:18:01,885 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:18:01,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:18:01,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1109581520, now seen corresponding path program 1 times [2023-12-22 10:18:01,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:18:01,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944500686] [2023-12-22 10:18:01,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:18:01,887 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 10:18:01,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:18:01,888 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 10:18:01,889 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 10:18:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:18:01,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:18:01,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:18:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:18:02,099 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:18:02,099 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:18:02,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944500686] [2023-12-22 10:18:02,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944500686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:18:02,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:18:02,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:18:02,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962825633] [2023-12-22 10:18:02,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:18:02,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:18:02,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:18:02,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:18:02,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:18:02,101 INFO L87 Difference]: Start difference. First operand 6762 states and 8712 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 10:18:34,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:18:34,312 INFO L93 Difference]: Finished difference Result 15776 states and 21227 transitions. [2023-12-22 10:18:34,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:18:34,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 277 [2023-12-22 10:18:34,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:18:34,334 INFO L225 Difference]: With dead ends: 15776 [2023-12-22 10:18:34,334 INFO L226 Difference]: Without dead ends: 9766 [2023-12-22 10:18:34,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 275 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 10:18:34,342 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 696 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 2960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.0s IncrementalHoareTripleChecker+Time [2023-12-22 10:18:34,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 978 Invalid, 2960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 32.0s Time] [2023-12-22 10:18:34,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9766 states. [2023-12-22 10:18:34,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9766 to 9766. [2023-12-22 10:18:34,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.3105990783410137) internal successors, (12798), 9765 states have internal predecessors, (12798), 0 states have call successors, (0), 0 states 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 10:18:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 12798 transitions. [2023-12-22 10:18:34,451 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 12798 transitions. Word has length 277 [2023-12-22 10:18:34,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:18:34,451 INFO L495 AbstractCegarLoop]: Abstraction has 9766 states and 12798 transitions. [2023-12-22 10:18:34,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 10:18:34,453 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 12798 transitions. [2023-12-22 10:18:34,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-12-22 10:18:34,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:18:34,456 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 10:18:34,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-22 10:18:34,660 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 10:18:34,660 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:18:34,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:18:34,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1126391376, now seen corresponding path program 1 times [2023-12-22 10:18:34,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:18:34,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304723678] [2023-12-22 10:18:34,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:18:34,662 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 10:18:34,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:18:34,663 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 10:18:34,668 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 10:18:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:18:34,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:18:34,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:18:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-22 10:18:35,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:18:35,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:18:35,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304723678] [2023-12-22 10:18:35,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304723678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:18:35,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:18:35,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 10:18:35,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936133412] [2023-12-22 10:18:35,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:18:35,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:18:35,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:18:35,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:18:35,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:18:35,093 INFO L87 Difference]: Start difference. First operand 9766 states and 12798 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 10:19:13,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:19:13,283 INFO L93 Difference]: Finished difference Result 24037 states and 32578 transitions. [2023-12-22 10:19:13,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:19:13,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 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 278 [2023-12-22 10:19:13,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:19:13,310 INFO L225 Difference]: With dead ends: 24037 [2023-12-22 10:19:13,311 INFO L226 Difference]: Without dead ends: 15023 [2023-12-22 10:19:13,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 276 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 10:19:13,319 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 634 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 2993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.0s IncrementalHoareTripleChecker+Time [2023-12-22 10:19:13,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 597 Invalid, 2993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 38.0s Time] [2023-12-22 10:19:13,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15023 states. [2023-12-22 10:19:13,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15023 to 15023. [2023-12-22 10:19:13,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15023 states, 15022 states have (on average 1.2686060444681135) internal successors, (19057), 15022 states have internal predecessors, (19057), 0 states have call successors, (0), 0 states 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 10:19:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15023 states to 15023 states and 19057 transitions. [2023-12-22 10:19:13,468 INFO L78 Accepts]: Start accepts. Automaton has 15023 states and 19057 transitions. Word has length 278 [2023-12-22 10:19:13,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:19:13,468 INFO L495 AbstractCegarLoop]: Abstraction has 15023 states and 19057 transitions. [2023-12-22 10:19:13,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 10:19:13,468 INFO L276 IsEmpty]: Start isEmpty. Operand 15023 states and 19057 transitions. [2023-12-22 10:19:13,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-22 10:19:13,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:19:13,471 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 10:19:13,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-22 10:19:13,675 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 10:19:13,675 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:19:13,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:19:13,676 INFO L85 PathProgramCache]: Analyzing trace with hash 902881946, now seen corresponding path program 1 times [2023-12-22 10:19:13,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:19:13,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204133773] [2023-12-22 10:19:13,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:19:13,677 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 10:19:13,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:19:13,679 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 10:19:13,692 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 10:19:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:19:13,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:19:13,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:19:13,902 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:19:13,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:19:13,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:19:13,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204133773] [2023-12-22 10:19:13,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204133773] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:19:13,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:19:13,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:19:13,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275393772] [2023-12-22 10:19:13,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:19:13,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:19:13,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:19:13,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:19:13,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:19:13,904 INFO L87 Difference]: Start difference. First operand 15023 states and 19057 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 10:19:55,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:19:55,742 INFO L93 Difference]: Finished difference Result 32298 states and 41917 transitions. [2023-12-22 10:19:55,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:19:55,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 281 [2023-12-22 10:19:55,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:19:55,780 INFO L225 Difference]: With dead ends: 32298 [2023-12-22 10:19:55,780 INFO L226 Difference]: Without dead ends: 18027 [2023-12-22 10:19:55,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 279 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 10:19:55,794 INFO L413 NwaCegarLoop]: 1334 mSDtfsCounter, 713 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 3063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.6s IncrementalHoareTripleChecker+Time [2023-12-22 10:19:55,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 1341 Invalid, 3063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 41.6s Time] [2023-12-22 10:19:55,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18027 states. [2023-12-22 10:19:55,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18027 to 18027. [2023-12-22 10:19:55,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18027 states, 18026 states have (on average 1.2724398091645401) internal successors, (22937), 18026 states have internal predecessors, (22937), 0 states have call successors, (0), 0 states 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 10:19:56,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18027 states to 18027 states and 22937 transitions. [2023-12-22 10:19:56,009 INFO L78 Accepts]: Start accepts. Automaton has 18027 states and 22937 transitions. Word has length 281 [2023-12-22 10:19:56,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:19:56,009 INFO L495 AbstractCegarLoop]: Abstraction has 18027 states and 22937 transitions. [2023-12-22 10:19:56,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 10:19:56,010 INFO L276 IsEmpty]: Start isEmpty. Operand 18027 states and 22937 transitions. [2023-12-22 10:19:56,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-12-22 10:19:56,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:19:56,012 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 10:19:56,016 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 10:19:56,216 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 10:19:56,216 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:19:56,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:19:56,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1884757060, now seen corresponding path program 1 times [2023-12-22 10:19:56,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:19:56,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409041245] [2023-12-22 10:19:56,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:19:56,218 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 10:19:56,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:19:56,219 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 10:19:56,220 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 10:19:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:19:56,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 10:19:56,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:19:57,233 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 125 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:19:57,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 10:19:58,474 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:19:58,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:19:58,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409041245] [2023-12-22 10:19:58,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409041245] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 10:19:58,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 10:19:58,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 10:19:58,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665633514] [2023-12-22 10:19:58,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:19:58,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:19:58,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:19:58,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:19:58,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:19:58,477 INFO L87 Difference]: Start difference. First operand 18027 states and 22937 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states 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 10:21:21,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:21:21,294 INFO L93 Difference]: Finished difference Result 48069 states and 61445 transitions. [2023-12-22 10:21:21,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:21:21,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 286 [2023-12-22 10:21:21,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:21:21,336 INFO L225 Difference]: With dead ends: 48069 [2023-12-22 10:21:21,336 INFO L226 Difference]: Without dead ends: 30794 [2023-12-22 10:21:21,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 567 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 10:21:21,349 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 712 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 871 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 3186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 871 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.5s IncrementalHoareTripleChecker+Time [2023-12-22 10:21:21,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 157 Invalid, 3186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [871 Valid, 2315 Invalid, 0 Unknown, 0 Unchecked, 82.5s Time] [2023-12-22 10:21:21,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30794 states. [2023-12-22 10:21:21,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30794 to 30794. [2023-12-22 10:21:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30794 states, 30793 states have (on average 1.2468742896112752) internal successors, (38395), 30793 states have internal predecessors, (38395), 0 states have call successors, (0), 0 states 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 10:21:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30794 states to 30794 states and 38395 transitions. [2023-12-22 10:21:21,738 INFO L78 Accepts]: Start accepts. Automaton has 30794 states and 38395 transitions. Word has length 286 [2023-12-22 10:21:21,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:21:21,739 INFO L495 AbstractCegarLoop]: Abstraction has 30794 states and 38395 transitions. [2023-12-22 10:21:21,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states 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 10:21:21,739 INFO L276 IsEmpty]: Start isEmpty. Operand 30794 states and 38395 transitions. [2023-12-22 10:21:21,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-22 10:21:21,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:21:21,741 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-22 10:21:21,753 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 10:21:21,954 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 10:21:21,954 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:21:21,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:21:21,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1588575162, now seen corresponding path program 1 times [2023-12-22 10:21:21,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:21:21,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093857361] [2023-12-22 10:21:21,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:21:21,960 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 10:21:21,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:21:21,961 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 10:21:22,012 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 10:21:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:21:22,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 10:21:22,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:21:22,602 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:21:22,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:21:22,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:21:22,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093857361] [2023-12-22 10:21:22,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093857361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:21:22,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:21:22,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:21:22,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751479331] [2023-12-22 10:21:22,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:21:22,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 10:21:22,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:21:22,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 10:21:22,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 10:21:22,604 INFO L87 Difference]: Start difference. First operand 30794 states and 38395 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states 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 10:21:55,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:21:55,880 INFO L93 Difference]: Finished difference Result 60836 states and 76033 transitions. [2023-12-22 10:21:55,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 10:21:55,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 290 [2023-12-22 10:21:55,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:21:55,925 INFO L225 Difference]: With dead ends: 60836 [2023-12-22 10:21:55,925 INFO L226 Difference]: Without dead ends: 30794 [2023-12-22 10:21:55,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 287 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 10:21:55,938 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1314 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4789 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 4999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 4789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2023-12-22 10:21:55,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 508 Invalid, 4999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 4789 Invalid, 0 Unknown, 0 Unchecked, 32.9s Time] [2023-12-22 10:21:55,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30794 states. [2023-12-22 10:21:56,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30794 to 30794. [2023-12-22 10:21:56,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30794 states, 30793 states have (on average 1.2453154937810542) internal successors, (38347), 30793 states have internal predecessors, (38347), 0 states have call successors, (0), 0 states 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 10:21:56,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30794 states to 30794 states and 38347 transitions. [2023-12-22 10:21:56,330 INFO L78 Accepts]: Start accepts. Automaton has 30794 states and 38347 transitions. Word has length 290 [2023-12-22 10:21:56,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:21:56,331 INFO L495 AbstractCegarLoop]: Abstraction has 30794 states and 38347 transitions. [2023-12-22 10:21:56,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states 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 10:21:56,331 INFO L276 IsEmpty]: Start isEmpty. Operand 30794 states and 38347 transitions. [2023-12-22 10:21:56,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-22 10:21:56,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:21:56,350 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:56,364 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 10:21:56,553 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 10:21:56,554 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:21:56,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:21:56,554 INFO L85 PathProgramCache]: Analyzing trace with hash -656864963, now seen corresponding path program 1 times [2023-12-22 10:21:56,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:21:56,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303121317] [2023-12-22 10:21:56,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:21:56,555 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 10:21:56,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:21:56,556 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 10:21:56,557 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 10:21:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:21:56,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 10:21:56,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:21:57,055 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 125 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:21:57,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 10:21:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:21:57,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:21:57,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303121317] [2023-12-22 10:21:57,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303121317] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 10:21:57,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 10:21:57,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 10:21:57,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192453780] [2023-12-22 10:21:57,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:21:57,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:21:57,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:21:57,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:21:57,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 10:21:57,272 INFO L87 Difference]: Start difference. First operand 30794 states and 38347 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 10:22:04,329 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 10:23:01,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:23:01,868 INFO L93 Difference]: Finished difference Result 69848 states and 86841 transitions. [2023-12-22 10:23:01,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:23:01,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 295 [2023-12-22 10:23:01,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:23:01,910 INFO L225 Difference]: With dead ends: 69848 [2023-12-22 10:23:01,911 INFO L226 Difference]: Without dead ends: 39806 [2023-12-22 10:23:01,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 585 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 10:23:01,921 INFO L413 NwaCegarLoop]: 1333 mSDtfsCounter, 692 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2496 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 2496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.2s IncrementalHoareTripleChecker+Time [2023-12-22 10:23:01,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 1340 Invalid, 2951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 2496 Invalid, 0 Unknown, 0 Unchecked, 64.2s Time] [2023-12-22 10:23:01,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39806 states. [2023-12-22 10:23:02,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39806 to 39806. [2023-12-22 10:23:02,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39806 states, 39805 states have (on average 1.2122095214169075) internal successors, (48252), 39805 states have internal predecessors, (48252), 0 states have call successors, (0), 0 states 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 10:23:02,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39806 states to 39806 states and 48252 transitions. [2023-12-22 10:23:02,323 INFO L78 Accepts]: Start accepts. Automaton has 39806 states and 48252 transitions. Word has length 295 [2023-12-22 10:23:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:23:02,323 INFO L495 AbstractCegarLoop]: Abstraction has 39806 states and 48252 transitions. [2023-12-22 10:23:02,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 10:23:02,323 INFO L276 IsEmpty]: Start isEmpty. Operand 39806 states and 48252 transitions. [2023-12-22 10:23:02,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-12-22 10:23:02,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:23:02,325 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:23:02,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-22 10:23:02,525 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 10:23:02,526 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:23:02,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:23:02,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1154032111, now seen corresponding path program 1 times [2023-12-22 10:23:02,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:23:02,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670168430] [2023-12-22 10:23:02,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:23:02,528 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 10:23:02,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:23:02,528 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 10:23:02,529 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 10:23:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:23:02,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:23:02,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:23:02,912 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-12-22 10:23:02,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:23:02,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:23:02,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670168430] [2023-12-22 10:23:02,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670168430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:23:02,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:23:02,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:23:02,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797403348] [2023-12-22 10:23:02,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:23:02,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:23:02,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:23:02,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:23:02,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:23:02,913 INFO L87 Difference]: Start difference. First operand 39806 states and 48252 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 10:23:37,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:23:37,622 INFO L93 Difference]: Finished difference Result 93880 states and 115776 transitions. [2023-12-22 10:23:37,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:23:37,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 304 [2023-12-22 10:23:37,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:23:37,678 INFO L225 Difference]: With dead ends: 93880 [2023-12-22 10:23:37,678 INFO L226 Difference]: Without dead ends: 54826 [2023-12-22 10:23:37,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 302 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 10:23:37,697 INFO L413 NwaCegarLoop]: 1245 mSDtfsCounter, 706 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2320 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 2320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.3s IncrementalHoareTripleChecker+Time [2023-12-22 10:23:37,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 1252 Invalid, 2874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 2320 Invalid, 0 Unknown, 0 Unchecked, 34.3s Time] [2023-12-22 10:23:37,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54826 states. [2023-12-22 10:23:38,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54826 to 54075. [2023-12-22 10:23:38,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54075 states, 54074 states have (on average 1.1836187446832118) internal successors, (64003), 54074 states have internal predecessors, (64003), 0 states have call successors, (0), 0 states 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 10:23:38,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54075 states to 54075 states and 64003 transitions. [2023-12-22 10:23:38,342 INFO L78 Accepts]: Start accepts. Automaton has 54075 states and 64003 transitions. Word has length 304 [2023-12-22 10:23:38,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:23:38,344 INFO L495 AbstractCegarLoop]: Abstraction has 54075 states and 64003 transitions. [2023-12-22 10:23:38,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 10:23:38,344 INFO L276 IsEmpty]: Start isEmpty. Operand 54075 states and 64003 transitions. [2023-12-22 10:23:38,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-12-22 10:23:38,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:23:38,366 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:23:38,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-22 10:23:38,566 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 10:23:38,567 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:23:38,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:23:38,568 INFO L85 PathProgramCache]: Analyzing trace with hash -859936684, now seen corresponding path program 1 times [2023-12-22 10:23:38,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:23:38,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608037400] [2023-12-22 10:23:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:23:38,569 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 10:23:38,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:23:38,570 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 10:23:38,572 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 10:23:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:23:38,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:23:38,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:23:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-22 10:23:38,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:23:38,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:23:38,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608037400] [2023-12-22 10:23:38,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608037400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:23:38,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:23:38,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:23:38,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457756365] [2023-12-22 10:23:38,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:23:38,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:23:38,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:23:38,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:23:38,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:23:38,804 INFO L87 Difference]: Start difference. First operand 54075 states and 64003 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 10:24:15,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:24:15,910 INFO L93 Difference]: Finished difference Result 121667 states and 146641 transitions. [2023-12-22 10:24:15,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:24:15,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 326 [2023-12-22 10:24:15,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:24:16,005 INFO L225 Difference]: With dead ends: 121667 [2023-12-22 10:24:16,005 INFO L226 Difference]: Without dead ends: 68344 [2023-12-22 10:24:16,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 324 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 10:24:16,030 INFO L413 NwaCegarLoop]: 1347 mSDtfsCounter, 702 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2324 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 2900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 2324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.6s IncrementalHoareTripleChecker+Time [2023-12-22 10:24:16,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 1354 Invalid, 2900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [576 Valid, 2324 Invalid, 0 Unknown, 0 Unchecked, 36.6s Time] [2023-12-22 10:24:16,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68344 states. [2023-12-22 10:24:16,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68344 to 68344. [2023-12-22 10:24:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68344 states, 68343 states have (on average 1.1588019255812592) internal successors, (79196), 68343 states have internal predecessors, (79196), 0 states have call successors, (0), 0 states 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 10:24:16,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68344 states to 68344 states and 79196 transitions. [2023-12-22 10:24:16,895 INFO L78 Accepts]: Start accepts. Automaton has 68344 states and 79196 transitions. Word has length 326 [2023-12-22 10:24:16,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:24:16,895 INFO L495 AbstractCegarLoop]: Abstraction has 68344 states and 79196 transitions. [2023-12-22 10:24:16,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 10:24:16,895 INFO L276 IsEmpty]: Start isEmpty. Operand 68344 states and 79196 transitions. [2023-12-22 10:24:16,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-22 10:24:16,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:24:16,900 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 10:24:16,924 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 10:24:17,104 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 10:24:17,104 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:24:17,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:24:17,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2072582771, now seen corresponding path program 1 times [2023-12-22 10:24:17,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:24:17,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679997065] [2023-12-22 10:24:17,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:24:17,106 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 10:24:17,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:24:17,107 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 10:24:17,108 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 10:24:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:24:17,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 10:24:17,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:24:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 262 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:24:19,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 10:24:20,539 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 447 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 10:24:20,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:24:20,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679997065] [2023-12-22 10:24:20,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679997065] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 10:24:20,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 10:24:20,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-22 10:24:20,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018412590] [2023-12-22 10:24:20,540 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 10:24:20,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 10:24:20,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:24:20,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 10:24:20,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-22 10:24:20,542 INFO L87 Difference]: Start difference. First operand 68344 states and 79196 transitions. Second operand has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 8 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 10:25:23,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:25:23,705 INFO L93 Difference]: Finished difference Result 185601 states and 216798 transitions. [2023-12-22 10:25:23,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-22 10:25:23,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 8 states have internal predecessors, (735), 0 states have call successors, (0), 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 403 [2023-12-22 10:25:23,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:25:23,944 INFO L225 Difference]: With dead ends: 185601 [2023-12-22 10:25:23,944 INFO L226 Difference]: Without dead ends: 118009 [2023-12-22 10:25:24,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 809 GetRequests, 797 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-22 10:25:24,009 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 6704 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 14500 mSolverCounterSat, 1277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6704 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 15777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1277 IncrementalHoareTripleChecker+Valid, 14500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.0s IncrementalHoareTripleChecker+Time [2023-12-22 10:25:24,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6704 Valid, 722 Invalid, 15777 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1277 Valid, 14500 Invalid, 0 Unknown, 0 Unchecked, 62.0s Time] [2023-12-22 10:25:24,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118009 states. [2023-12-22 10:25:25,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118009 to 108898. [2023-12-22 10:25:25,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108898 states, 108897 states have (on average 1.131729983378789) internal successors, (123242), 108897 states have internal predecessors, (123242), 0 states have call successors, (0), 0 states 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 10:25:25,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108898 states to 108898 states and 123242 transitions. [2023-12-22 10:25:25,621 INFO L78 Accepts]: Start accepts. Automaton has 108898 states and 123242 transitions. Word has length 403 [2023-12-22 10:25:25,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:25:25,622 INFO L495 AbstractCegarLoop]: Abstraction has 108898 states and 123242 transitions. [2023-12-22 10:25:25,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.66666666666667) internal successors, (735), 8 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 10:25:25,622 INFO L276 IsEmpty]: Start isEmpty. Operand 108898 states and 123242 transitions. [2023-12-22 10:25:25,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-22 10:25:25,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:25:25,627 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-22 10:25:25,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-22 10:25:25,831 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 10:25:25,832 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:25:25,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:25:25,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1962748659, now seen corresponding path program 1 times [2023-12-22 10:25:25,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:25:25,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961363198] [2023-12-22 10:25:25,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:25:25,834 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 10:25:25,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:25:25,835 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 10:25:25,837 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 10:25:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:25:26,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 10:25:26,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:25:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 365 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-12-22 10:25:26,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 10:25:26,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:25:26,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961363198] [2023-12-22 10:25:26,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961363198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 10:25:26,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 10:25:26,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 10:25:26,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963283294] [2023-12-22 10:25:26,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 10:25:26,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 10:25:26,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:25:26,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 10:25:26,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 10:25:26,367 INFO L87 Difference]: Start difference. First operand 108898 states and 123242 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states 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 10:26:05,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 10:26:05,341 INFO L93 Difference]: Finished difference Result 241827 states and 274762 transitions. [2023-12-22 10:26:05,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 10:26:05,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 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 450 [2023-12-22 10:26:05,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 10:26:05,673 INFO L225 Difference]: With dead ends: 241827 [2023-12-22 10:26:05,673 INFO L226 Difference]: Without dead ends: 130677 [2023-12-22 10:26:05,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 448 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 10:26:05,720 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 682 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.0s IncrementalHoareTripleChecker+Time [2023-12-22 10:26:05,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1324 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [763 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 38.0s Time] [2023-12-22 10:26:05,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130677 states. [2023-12-22 10:26:07,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130677 to 129175. [2023-12-22 10:26:07,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129175 states, 129174 states have (on average 1.103449610602753) internal successors, (142537), 129174 states have internal predecessors, (142537), 0 states have call successors, (0), 0 states 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 10:26:07,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129175 states to 129175 states and 142537 transitions. [2023-12-22 10:26:07,421 INFO L78 Accepts]: Start accepts. Automaton has 129175 states and 142537 transitions. Word has length 450 [2023-12-22 10:26:07,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 10:26:07,422 INFO L495 AbstractCegarLoop]: Abstraction has 129175 states and 142537 transitions. [2023-12-22 10:26:07,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states 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 10:26:07,422 INFO L276 IsEmpty]: Start isEmpty. Operand 129175 states and 142537 transitions. [2023-12-22 10:26:07,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2023-12-22 10:26:07,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 10:26:07,437 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:26:07,444 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 (16)] Ended with exit code 0 [2023-12-22 10:26:07,643 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 10:26:07,644 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 10:26:07,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 10:26:07,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1966621485, now seen corresponding path program 1 times [2023-12-22 10:26:07,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 10:26:07,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400670601] [2023-12-22 10:26:07,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 10:26:07,647 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 10:26:07,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 10:26:07,648 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 10:26:07,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-22 10:26:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 10:26:07,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 10:26:07,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 10:26:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 518 proven. 253 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-22 10:26:08,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 10:26:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 702 proven. 69 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-22 10:26:20,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 10:26:20,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400670601] [2023-12-22 10:26:20,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400670601] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 10:26:20,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 10:26:20,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-22 10:26:20,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172596195] [2023-12-22 10:26:20,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 10:26:20,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 10:26:20,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 10:26:20,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 10:26:20,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-22 10:26:20,135 INFO L87 Difference]: Start difference. First operand 129175 states and 142537 transitions. Second operand has 7 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 states have internal predecessors, (830), 0 states have call successors, (0), 0 states 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 10:27:48,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-22 10:28:26,471 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 10:28:26,473 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 (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 10:28:26,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 10:28:26,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1124 GetRequests, 1117 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-22 10:28:26,585 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 3008 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 8284 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3008 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 8783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 8284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 125.5s IncrementalHoareTripleChecker+Time [2023-12-22 10:28:26,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3008 Valid, 88 Invalid, 8783 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [499 Valid, 8284 Invalid, 0 Unknown, 0 Unchecked, 125.5s Time] [2023-12-22 10:28:26,586 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-22 10:28:26,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-22 10:28:26,787 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 10:28:26,788 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (129175states) and FLOYD_HOARE automaton (currently 9 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (34362 states constructed, input type IntersectNwa). [2023-12-22 10:28:26,791 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 10:28:26,793 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 10:28:26,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 10:28:26 BoogieIcfgContainer [2023-12-22 10:28:26,794 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 10:28:26,795 INFO L158 Benchmark]: Toolchain (without parser) took 858888.31ms. Allocated memory was 247.5MB in the beginning and 986.7MB in the end (delta: 739.2MB). Free memory was 183.3MB in the beginning and 390.3MB in the end (delta: -207.0MB). Peak memory consumption was 534.4MB. Max. memory is 8.0GB. [2023-12-22 10:28:26,795 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 205.5MB. Free memory is still 157.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 10:28:26,795 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1144.39ms. Allocated memory is still 247.5MB. Free memory was 183.3MB in the beginning and 174.5MB in the end (delta: 8.8MB). Peak memory consumption was 135.7MB. Max. memory is 8.0GB. [2023-12-22 10:28:26,795 INFO L158 Benchmark]: Boogie Procedure Inliner took 153.42ms. Allocated memory is still 247.5MB. Free memory was 174.0MB in the beginning and 139.9MB in the end (delta: 34.1MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-12-22 10:28:26,795 INFO L158 Benchmark]: Boogie Preprocessor took 286.54ms. Allocated memory was 247.5MB in the beginning and 350.2MB in the end (delta: 102.8MB). Free memory was 139.9MB in the beginning and 258.8MB in the end (delta: -118.9MB). Peak memory consumption was 47.8MB. Max. memory is 8.0GB. [2023-12-22 10:28:26,795 INFO L158 Benchmark]: RCFGBuilder took 26325.31ms. Allocated memory was 350.2MB in the beginning and 570.4MB in the end (delta: 220.2MB). Free memory was 258.8MB in the beginning and 305.2MB in the end (delta: -46.4MB). Peak memory consumption was 209.0MB. Max. memory is 8.0GB. [2023-12-22 10:28:26,796 INFO L158 Benchmark]: TraceAbstraction took 830972.79ms. Allocated memory was 570.4MB in the beginning and 986.7MB in the end (delta: 416.3MB). Free memory was 304.6MB in the beginning and 390.3MB in the end (delta: -85.6MB). Peak memory consumption was 332.2MB. Max. memory is 8.0GB. [2023-12-22 10:28:26,797 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 205.5MB. Free memory is still 157.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1144.39ms. Allocated memory is still 247.5MB. Free memory was 183.3MB in the beginning and 174.5MB in the end (delta: 8.8MB). Peak memory consumption was 135.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 153.42ms. Allocated memory is still 247.5MB. Free memory was 174.0MB in the beginning and 139.9MB in the end (delta: 34.1MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 286.54ms. Allocated memory was 247.5MB in the beginning and 350.2MB in the end (delta: 102.8MB). Free memory was 139.9MB in the beginning and 258.8MB in the end (delta: -118.9MB). Peak memory consumption was 47.8MB. Max. memory is 8.0GB. * RCFGBuilder took 26325.31ms. Allocated memory was 350.2MB in the beginning and 570.4MB in the end (delta: 220.2MB). Free memory was 258.8MB in the beginning and 305.2MB in the end (delta: -46.4MB). Peak memory consumption was 209.0MB. Max. memory is 8.0GB. * TraceAbstraction took 830972.79ms. Allocated memory was 570.4MB in the beginning and 986.7MB in the end (delta: 416.3MB). Free memory was 304.6MB in the beginning and 390.3MB in the end (delta: -85.6MB). Peak memory consumption was 332.2MB. 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: 217]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 217). Cancelled while NwaCegarLoop was constructing difference of abstraction (129175states) and FLOYD_HOARE automaton (currently 9 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (34362 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 756 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 830.9s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 796.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19346 SdHoareTripleChecker+Valid, 789.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19346 mSDsluCounter, 13901 SdHoareTripleChecker+Invalid, 690.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 486 mSDsCounter, 8999 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56538 IncrementalHoareTripleChecker+Invalid, 65537 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8999 mSolverCounterUnsat, 13415 mSDtfsCounter, 56538 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6307 GetRequests, 6267 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129175occurred in iteration=15, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.7s AutomataMinimizationTime, 15 MinimizatonAttempts, 11364 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 21.9s InterpolantComputationTime, 4498 NumberOfCodeBlocks, 4498 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 6298 ConstructedInterpolants, 0 QuantifiedInterpolants, 27160 SizeOfPredicates, 9 NumberOfNonLiveVariables, 5305 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 21 InterpolantComputations, 14 PerfectInterpolantSequences, 4966/5736 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