/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/recursive-simple/fibo_20-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 06:13:12,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 06:13:12,591 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 06:13:12,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 06:13:12,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 06:13:12,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 06:13:12,620 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 06:13:12,621 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 06:13:12,621 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 06:13:12,624 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 06:13:12,624 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 06:13:12,625 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 06:13:12,625 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 06:13:12,626 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 06:13:12,626 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 06:13:12,627 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 06:13:12,627 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 06:13:12,627 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 06:13:12,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 06:13:12,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 06:13:12,628 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 06:13:12,628 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 06:13:12,628 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 06:13:12,628 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 06:13:12,628 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 06:13:12,629 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 06:13:12,629 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 06:13:12,629 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 06:13:12,629 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 06:13:12,629 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 06:13:12,630 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 06:13:12,630 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 06:13:12,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 06:13:12,630 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 06:13:12,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:13:12,631 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 06:13:12,631 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 06:13:12,631 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 06:13:12,631 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 06:13:12,631 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 06:13:12,631 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 06:13:12,631 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 06:13:12,632 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 06:13:12,632 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 06:13:12,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 06:13:12,632 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 06:13:12,632 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 06:13:12,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 06:13:12,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 06:13:12,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 06:13:12,849 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 06:13:12,849 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 06:13:12,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_20-1.c [2023-12-25 06:13:14,184 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 06:13:14,368 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 06:13:14,369 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_20-1.c [2023-12-25 06:13:14,375 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7974358c/aeb43df4d1be4e48ae684269e3207017/FLAG6ef0eaca9 [2023-12-25 06:13:14,390 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7974358c/aeb43df4d1be4e48ae684269e3207017 [2023-12-25 06:13:14,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 06:13:14,394 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 06:13:14,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 06:13:14,397 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 06:13:14,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 06:13:14,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:13:14" (1/1) ... [2023-12-25 06:13:14,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70e86f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:13:14, skipping insertion in model container [2023-12-25 06:13:14,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:13:14" (1/1) ... [2023-12-25 06:13:14,423 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 06:13:14,589 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_20-1.c[745,758] [2023-12-25 06:13:14,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:13:14,605 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 06:13:14,621 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_20-1.c[745,758] [2023-12-25 06:13:14,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:13:14,635 INFO L206 MainTranslator]: Completed translation [2023-12-25 06:13:14,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:13:14 WrapperNode [2023-12-25 06:13:14,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 06:13:14,638 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 06:13:14,638 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 06:13:14,638 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 06:13:14,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:13:14" (1/1) ... [2023-12-25 06:13:14,653 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:13:14" (1/1) ... [2023-12-25 06:13:14,668 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-12-25 06:13:14,668 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 06:13:14,669 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 06:13:14,669 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 06:13:14,669 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 06:13:14,678 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:13:14" (1/1) ... [2023-12-25 06:13:14,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:13:14" (1/1) ... [2023-12-25 06:13:14,683 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:13:14" (1/1) ... [2023-12-25 06:13:14,694 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-25 06:13:14,695 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:13:14" (1/1) ... [2023-12-25 06:13:14,695 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:13:14" (1/1) ... [2023-12-25 06:13:14,704 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:13:14" (1/1) ... [2023-12-25 06:13:14,706 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:13:14" (1/1) ... [2023-12-25 06:13:14,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:13:14" (1/1) ... [2023-12-25 06:13:14,707 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:13:14" (1/1) ... [2023-12-25 06:13:14,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 06:13:14,709 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 06:13:14,709 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 06:13:14,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 06:13:14,710 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:13:14" (1/1) ... [2023-12-25 06:13:14,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:13:14,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 06:13:14,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-25 06:13:14,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-25 06:13:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 06:13:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 06:13:14,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 06:13:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 06:13:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2023-12-25 06:13:14,783 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2023-12-25 06:13:14,845 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 06:13:14,849 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 06:13:15,007 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 06:13:15,028 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 06:13:15,028 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 06:13:15,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:13:15 BoogieIcfgContainer [2023-12-25 06:13:15,028 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 06:13:15,031 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 06:13:15,031 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 06:13:15,033 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 06:13:15,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 06:13:14" (1/3) ... [2023-12-25 06:13:15,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef8caf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:13:15, skipping insertion in model container [2023-12-25 06:13:15,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:13:14" (2/3) ... [2023-12-25 06:13:15,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef8caf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:13:15, skipping insertion in model container [2023-12-25 06:13:15,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:13:15" (3/3) ... [2023-12-25 06:13:15,036 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_20-1.c [2023-12-25 06:13:15,064 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 06:13:15,064 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 06:13:15,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 06:13:15,117 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;@7fb7d9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 06:13:15,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 06:13:15,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 06:13:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-25 06:13:15,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:15,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:15,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:15,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:15,135 INFO L85 PathProgramCache]: Analyzing trace with hash -735234106, now seen corresponding path program 1 times [2023-12-25 06:13:15,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:15,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604039211] [2023-12-25 06:13:15,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:13:15,151 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:15,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:15,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:15,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-25 06:13:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:13:15,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:13:15,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:13:15,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:13:15,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:15,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604039211] [2023-12-25 06:13:15,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604039211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:13:15,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:13:15,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:13:15,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373872274] [2023-12-25 06:13:15,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:13:15,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:13:15,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:15,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:13:15,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:13:15,305 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:13:15,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:15,387 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2023-12-25 06:13:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:13:15,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-12-25 06:13:15,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:15,396 INFO L225 Difference]: With dead ends: 24 [2023-12-25 06:13:15,396 INFO L226 Difference]: Without dead ends: 16 [2023-12-25 06:13:15,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:13:15,402 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:15,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 24 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:13:15,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-25 06:13:15,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-25 06:13:15,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-25 06:13:15,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2023-12-25 06:13:15,437 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2023-12-25 06:13:15,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:15,438 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2023-12-25 06:13:15,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:13:15,438 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-12-25 06:13:15,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-25 06:13:15,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:15,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:15,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-25 06:13:15,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:15,643 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:15,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:15,644 INFO L85 PathProgramCache]: Analyzing trace with hash -574078710, now seen corresponding path program 1 times [2023-12-25 06:13:15,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:15,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639234414] [2023-12-25 06:13:15,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:13:15,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:15,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:15,646 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:15,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-25 06:13:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:13:15,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:13:15,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:13:15,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:13:15,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:15,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639234414] [2023-12-25 06:13:15,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639234414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:13:15,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:13:15,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:13:15,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157045880] [2023-12-25 06:13:15,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:13:15,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:13:15,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:15,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:13:15,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:13:15,728 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:13:15,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:15,796 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2023-12-25 06:13:15,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:13:15,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-12-25 06:13:15,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:15,797 INFO L225 Difference]: With dead ends: 22 [2023-12-25 06:13:15,798 INFO L226 Difference]: Without dead ends: 18 [2023-12-25 06:13:15,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:13:15,799 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:15,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 23 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:13:15,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-25 06:13:15,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2023-12-25 06:13:15,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-25 06:13:15,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2023-12-25 06:13:15,805 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2023-12-25 06:13:15,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:15,806 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2023-12-25 06:13:15,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:13:15,806 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-12-25 06:13:15,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-25 06:13:15,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:15,807 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:15,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-25 06:13:16,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:16,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:16,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:16,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1482643974, now seen corresponding path program 1 times [2023-12-25 06:13:16,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:16,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051650693] [2023-12-25 06:13:16,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:13:16,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:16,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:16,014 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:16,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-25 06:13:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:13:16,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:13:16,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:16,127 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 06:13:16,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:16,340 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-25 06:13:16,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:16,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051650693] [2023-12-25 06:13:16,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051650693] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:13:16,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:16,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2023-12-25 06:13:16,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223071953] [2023-12-25 06:13:16,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:16,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 06:13:16,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:16,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 06:13:16,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-25 06:13:16,343 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:13:16,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:16,455 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2023-12-25 06:13:16,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:13:16,456 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 21 [2023-12-25 06:13:16,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:16,457 INFO L225 Difference]: With dead ends: 26 [2023-12-25 06:13:16,457 INFO L226 Difference]: Without dead ends: 22 [2023-12-25 06:13:16,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:13:16,459 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:16,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 36 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:13:16,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-25 06:13:16,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2023-12-25 06:13:16,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-25 06:13:16,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2023-12-25 06:13:16,466 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 21 [2023-12-25 06:13:16,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:16,466 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2023-12-25 06:13:16,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:13:16,466 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2023-12-25 06:13:16,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-25 06:13:16,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:16,467 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:16,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-25 06:13:16,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:16,671 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:16,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:16,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1283424576, now seen corresponding path program 1 times [2023-12-25 06:13:16,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:16,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305430443] [2023-12-25 06:13:16,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:13:16,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:16,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:16,679 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:13:16,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-25 06:13:16,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:13:16,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-25 06:13:16,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:16,930 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-25 06:13:16,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:16,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305430443] [2023-12-25 06:13:16,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305430443] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:13:16,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:16,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2023-12-25 06:13:16,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037073593] [2023-12-25 06:13:16,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:16,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 06:13:16,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:16,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 06:13:16,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-25 06:13:16,934 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand has 9 states, 7 states have (on average 3.0) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:13:17,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:17,029 INFO L93 Difference]: Finished difference Result 44 states and 78 transitions. [2023-12-25 06:13:17,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:13:17,030 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 22 [2023-12-25 06:13:17,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:17,031 INFO L225 Difference]: With dead ends: 44 [2023-12-25 06:13:17,031 INFO L226 Difference]: Without dead ends: 26 [2023-12-25 06:13:17,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:13:17,033 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:17,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 36 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:13:17,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-25 06:13:17,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-25 06:13:17,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) [2023-12-25 06:13:17,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 41 transitions. [2023-12-25 06:13:17,056 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 41 transitions. Word has length 22 [2023-12-25 06:13:17,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:17,056 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 41 transitions. [2023-12-25 06:13:17,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:13:17,057 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 41 transitions. [2023-12-25 06:13:17,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-25 06:13:17,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:17,059 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:17,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-25 06:13:17,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:17,262 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:17,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:17,263 INFO L85 PathProgramCache]: Analyzing trace with hash -129465146, now seen corresponding path program 2 times [2023-12-25 06:13:17,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:17,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638692869] [2023-12-25 06:13:17,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:13:17,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:17,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:17,267 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:17,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-25 06:13:17,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:13:17,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:13:17,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:13:17,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-25 06:13:17,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:17,736 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-25 06:13:17,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:17,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638692869] [2023-12-25 06:13:17,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638692869] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:13:17,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:17,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2023-12-25 06:13:17,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984993450] [2023-12-25 06:13:17,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:17,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 06:13:17,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:17,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 06:13:17,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:13:17,738 INFO L87 Difference]: Start difference. First operand 26 states and 41 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-25 06:13:17,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:17,941 INFO L93 Difference]: Finished difference Result 59 states and 109 transitions. [2023-12-25 06:13:17,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 06:13:17,943 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) Word has length 33 [2023-12-25 06:13:17,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:17,944 INFO L225 Difference]: With dead ends: 59 [2023-12-25 06:13:17,944 INFO L226 Difference]: Without dead ends: 35 [2023-12-25 06:13:17,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-12-25 06:13:17,946 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:17,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 46 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:13:17,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-25 06:13:17,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2023-12-25 06:13:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-25 06:13:17,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2023-12-25 06:13:17,953 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 33 [2023-12-25 06:13:17,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:17,953 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2023-12-25 06:13:17,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-25 06:13:17,953 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2023-12-25 06:13:17,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-25 06:13:17,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:17,955 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:17,957 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 (6)] Ended with exit code 0 [2023-12-25 06:13:18,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:18,158 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:18,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:18,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1440927676, now seen corresponding path program 2 times [2023-12-25 06:13:18,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:18,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715673508] [2023-12-25 06:13:18,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:13:18,159 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:18,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:18,160 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:18,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-25 06:13:18,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:13:18,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:13:18,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:13:18,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-25 06:13:18,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-25 06:13:18,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:18,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715673508] [2023-12-25 06:13:18,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715673508] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:13:18,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:18,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2023-12-25 06:13:18,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495996911] [2023-12-25 06:13:18,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:18,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 06:13:18,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:18,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 06:13:18,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:13:18,483 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-25 06:13:18,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:18,610 INFO L93 Difference]: Finished difference Result 66 states and 114 transitions. [2023-12-25 06:13:18,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 06:13:18,611 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) Word has length 35 [2023-12-25 06:13:18,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:18,612 INFO L225 Difference]: With dead ends: 66 [2023-12-25 06:13:18,612 INFO L226 Difference]: Without dead ends: 42 [2023-12-25 06:13:18,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:13:18,614 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:18,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 57 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:13:18,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-25 06:13:18,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2023-12-25 06:13:18,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) [2023-12-25 06:13:18,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 53 transitions. [2023-12-25 06:13:18,634 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 53 transitions. Word has length 35 [2023-12-25 06:13:18,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:18,635 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 53 transitions. [2023-12-25 06:13:18,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-25 06:13:18,635 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 53 transitions. [2023-12-25 06:13:18,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-25 06:13:18,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:18,637 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:18,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-25 06:13:18,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:18,840 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:18,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:18,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1149036726, now seen corresponding path program 3 times [2023-12-25 06:13:18,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:18,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94242746] [2023-12-25 06:13:18,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:13:18,841 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:18,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:18,842 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:18,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-25 06:13:18,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 06:13:18,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:13:18,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 06:13:18,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:18,978 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 180 proven. 5 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-12-25 06:13:18,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:19,387 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 136 proven. 15 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-12-25 06:13:19,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:19,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94242746] [2023-12-25 06:13:19,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94242746] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:13:19,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:19,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2023-12-25 06:13:19,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088475005] [2023-12-25 06:13:19,388 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:19,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 06:13:19,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:19,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 06:13:19,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-25 06:13:19,390 INFO L87 Difference]: Start difference. First operand 36 states and 53 transitions. Second operand has 12 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-12-25 06:13:19,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:19,515 INFO L93 Difference]: Finished difference Result 65 states and 97 transitions. [2023-12-25 06:13:19,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:13:19,516 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 82 [2023-12-25 06:13:19,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:19,517 INFO L225 Difference]: With dead ends: 65 [2023-12-25 06:13:19,517 INFO L226 Difference]: Without dead ends: 31 [2023-12-25 06:13:19,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-12-25 06:13:19,518 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:19,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 48 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:13:19,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-25 06:13:19,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-12-25 06:13:19,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-25 06:13:19,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-12-25 06:13:19,524 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 82 [2023-12-25 06:13:19,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:19,524 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-12-25 06:13:19,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 6 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-12-25 06:13:19,525 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-12-25 06:13:19,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-25 06:13:19,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:19,526 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:19,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-25 06:13:19,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:19,730 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:19,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:19,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1163688374, now seen corresponding path program 4 times [2023-12-25 06:13:19,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:19,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123953951] [2023-12-25 06:13:19,731 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:13:19,731 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:19,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:19,733 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:19,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-25 06:13:19,787 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:13:19,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:13:19,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:13:19,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 27 proven. 154 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-25 06:13:19,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 27 proven. 169 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-12-25 06:13:20,250 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:20,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123953951] [2023-12-25 06:13:20,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123953951] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:13:20,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:20,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 13 [2023-12-25 06:13:20,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058058457] [2023-12-25 06:13:20,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:20,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 06:13:20,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:20,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 06:13:20,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-25 06:13:20,252 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 13 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) [2023-12-25 06:13:20,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:20,445 INFO L93 Difference]: Finished difference Result 71 states and 103 transitions. [2023-12-25 06:13:20,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 06:13:20,446 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 13 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) Word has length 86 [2023-12-25 06:13:20,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:20,447 INFO L225 Difference]: With dead ends: 71 [2023-12-25 06:13:20,447 INFO L226 Difference]: Without dead ends: 42 [2023-12-25 06:13:20,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-12-25 06:13:20,448 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:20,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 74 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:13:20,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-25 06:13:20,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2023-12-25 06:13:20,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 7 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (15), 9 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-25 06:13:20,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2023-12-25 06:13:20,454 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 86 [2023-12-25 06:13:20,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:20,455 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2023-12-25 06:13:20,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 13 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) [2023-12-25 06:13:20,455 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2023-12-25 06:13:20,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 06:13:20,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:20,456 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 7, 4, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:20,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-25 06:13:20,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:20,661 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:20,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:20,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1652042176, now seen corresponding path program 5 times [2023-12-25 06:13:20,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:20,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232574455] [2023-12-25 06:13:20,662 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:13:20,662 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 [2023-12-25 06:13:20,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:20,664 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:20,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-25 06:13:20,743 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2023-12-25 06:13:20,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:13:20,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:13:20,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:20,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 310 proven. 265 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-12-25 06:13:20,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 321 proven. 309 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2023-12-25 06:13:22,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:22,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232574455] [2023-12-25 06:13:22,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232574455] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:13:22,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:22,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 23 [2023-12-25 06:13:22,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841110119] [2023-12-25 06:13:22,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:22,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 06:13:22,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:22,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 06:13:22,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:13:22,925 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 23 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 21 states have internal predecessors, (54), 15 states have call successors, (21), 1 states have call predecessors, (21), 9 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) [2023-12-25 06:13:23,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:23,473 INFO L93 Difference]: Finished difference Result 98 states and 163 transitions. [2023-12-25 06:13:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 06:13:23,475 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 21 states have internal predecessors, (54), 15 states have call successors, (21), 1 states have call predecessors, (21), 9 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) Word has length 136 [2023-12-25 06:13:23,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:23,477 INFO L225 Difference]: With dead ends: 98 [2023-12-25 06:13:23,477 INFO L226 Difference]: Without dead ends: 61 [2023-12-25 06:13:23,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 242 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=239, Invalid=691, Unknown=0, NotChecked=0, Total=930 [2023-12-25 06:13:23,478 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 92 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:23,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 133 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:13:23,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-25 06:13:23,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 51. [2023-12-25 06:13:23,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 10 states have call successors, (10), 5 states have call predecessors, (10), 8 states have return successors, (29), 13 states have call predecessors, (29), 10 states have call successors, (29) [2023-12-25 06:13:23,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2023-12-25 06:13:23,499 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 136 [2023-12-25 06:13:23,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:23,500 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2023-12-25 06:13:23,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 21 states have internal predecessors, (54), 15 states have call successors, (21), 1 states have call predecessors, (21), 9 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) [2023-12-25 06:13:23,500 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2023-12-25 06:13:23,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-25 06:13:23,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:23,501 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:23,511 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 [2023-12-25 06:13:23,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:23,708 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:23,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:23,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1711998528, now seen corresponding path program 6 times [2023-12-25 06:13:23,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:23,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774468819] [2023-12-25 06:13:23,709 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:13:23,709 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:23,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:23,711 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:23,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-25 06:13:23,793 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-12-25 06:13:23,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:13:23,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 06:13:23,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 41 proven. 212 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-12-25 06:13:23,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:24,380 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 41 proven. 238 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-25 06:13:24,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:24,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774468819] [2023-12-25 06:13:24,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774468819] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:13:24,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:24,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 15 [2023-12-25 06:13:24,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048534002] [2023-12-25 06:13:24,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:24,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-25 06:13:24,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:24,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-25 06:13:24,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-12-25 06:13:24,383 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 15 states have internal predecessors, (40), 12 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (16), 6 states have call predecessors, (16), 12 states have call successors, (16) [2023-12-25 06:13:24,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:24,654 INFO L93 Difference]: Finished difference Result 55 states and 76 transitions. [2023-12-25 06:13:24,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 06:13:24,654 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 15 states have internal predecessors, (40), 12 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (16), 6 states have call predecessors, (16), 12 states have call successors, (16) Word has length 98 [2023-12-25 06:13:24,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:24,657 INFO L225 Difference]: With dead ends: 55 [2023-12-25 06:13:24,658 INFO L226 Difference]: Without dead ends: 51 [2023-12-25 06:13:24,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-25 06:13:24,659 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 57 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:24,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 93 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:13:24,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-25 06:13:24,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-25 06:13:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 10 states have call successors, (10), 5 states have call predecessors, (10), 8 states have return successors, (28), 13 states have call predecessors, (28), 10 states have call successors, (28) [2023-12-25 06:13:24,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2023-12-25 06:13:24,675 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 98 [2023-12-25 06:13:24,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:24,678 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2023-12-25 06:13:24,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 15 states have internal predecessors, (40), 12 states have call successors, (13), 1 states have call predecessors, (13), 6 states have return successors, (16), 6 states have call predecessors, (16), 12 states have call successors, (16) [2023-12-25 06:13:24,678 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2023-12-25 06:13:24,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-25 06:13:24,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:24,680 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 8, 5, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:24,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-25 06:13:24,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:24,889 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:24,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:24,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1914823686, now seen corresponding path program 7 times [2023-12-25 06:13:24,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:24,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467035364] [2023-12-25 06:13:24,890 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:13:24,890 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:24,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:24,895 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:24,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-25 06:13:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:13:25,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 06:13:25,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:25,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1588 backedges. 89 proven. 492 refuted. 0 times theorem prover too weak. 1007 trivial. 0 not checked. [2023-12-25 06:13:25,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:25,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1588 backedges. 89 proven. 532 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2023-12-25 06:13:25,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:25,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467035364] [2023-12-25 06:13:25,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467035364] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:13:25,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:25,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 17 [2023-12-25 06:13:25,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505466788] [2023-12-25 06:13:25,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:25,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 06:13:25,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:25,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 06:13:25,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-25 06:13:25,845 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand has 17 states, 15 states have (on average 3.0) internal successors, (45), 17 states have internal predecessors, (45), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) [2023-12-25 06:13:26,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:26,186 INFO L93 Difference]: Finished difference Result 119 states and 215 transitions. [2023-12-25 06:13:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 06:13:26,187 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.0) internal successors, (45), 17 states have internal predecessors, (45), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) Word has length 161 [2023-12-25 06:13:26,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:26,188 INFO L225 Difference]: With dead ends: 119 [2023-12-25 06:13:26,188 INFO L226 Difference]: Without dead ends: 70 [2023-12-25 06:13:26,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:13:26,189 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 66 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:26,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 122 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:13:26,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-25 06:13:26,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2023-12-25 06:13:26,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 12 states have call successors, (12), 6 states have call predecessors, (12), 9 states have return successors, (33), 15 states have call predecessors, (33), 12 states have call successors, (33) [2023-12-25 06:13:26,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 84 transitions. [2023-12-25 06:13:26,198 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 84 transitions. Word has length 161 [2023-12-25 06:13:26,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:26,198 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 84 transitions. [2023-12-25 06:13:26,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.0) internal successors, (45), 17 states have internal predecessors, (45), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) [2023-12-25 06:13:26,198 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 84 transitions. [2023-12-25 06:13:26,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-25 06:13:26,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:26,202 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:26,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-25 06:13:26,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:26,406 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:26,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:26,407 INFO L85 PathProgramCache]: Analyzing trace with hash 409879046, now seen corresponding path program 8 times [2023-12-25 06:13:26,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:26,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822604470] [2023-12-25 06:13:26,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:13:26,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:26,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:26,409 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:26,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-25 06:13:26,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:13:26,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:13:26,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 06:13:26,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:26,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6820 backedges. 203 proven. 1373 refuted. 0 times theorem prover too weak. 5244 trivial. 0 not checked. [2023-12-25 06:13:26,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:27,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6820 backedges. 203 proven. 1430 refuted. 0 times theorem prover too weak. 5187 trivial. 0 not checked. [2023-12-25 06:13:27,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:27,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822604470] [2023-12-25 06:13:27,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822604470] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:13:27,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:27,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 19 [2023-12-25 06:13:27,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854952436] [2023-12-25 06:13:27,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:27,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-25 06:13:27,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:27,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-25 06:13:27,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-25 06:13:27,837 INFO L87 Difference]: Start difference. First operand 59 states and 84 transitions. Second operand has 19 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 19 states have internal predecessors, (50), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2023-12-25 06:13:28,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:28,235 INFO L93 Difference]: Finished difference Result 136 states and 256 transitions. [2023-12-25 06:13:28,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 06:13:28,236 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 19 states have internal predecessors, (50), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) Word has length 325 [2023-12-25 06:13:28,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:28,238 INFO L225 Difference]: With dead ends: 136 [2023-12-25 06:13:28,238 INFO L226 Difference]: Without dead ends: 79 [2023-12-25 06:13:28,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2023-12-25 06:13:28,239 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 81 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:28,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 177 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:13:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-25 06:13:28,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 64. [2023-12-25 06:13:28,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 14 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (34), 16 states have call predecessors, (34), 14 states have call successors, (34) [2023-12-25 06:13:28,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2023-12-25 06:13:28,256 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 325 [2023-12-25 06:13:28,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:28,257 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2023-12-25 06:13:28,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 19 states have internal predecessors, (50), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2023-12-25 06:13:28,257 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2023-12-25 06:13:28,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-25 06:13:28,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:28,264 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 67, 41, 41, 41, 41, 41, 41, 26, 16, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:28,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-25 06:13:28,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:28,475 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:28,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:28,477 INFO L85 PathProgramCache]: Analyzing trace with hash 48182618, now seen corresponding path program 9 times [2023-12-25 06:13:28,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:28,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364746393] [2023-12-25 06:13:28,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:13:28,478 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:28,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:28,480 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:28,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-25 06:13:28,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2023-12-25 06:13:28,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:13:28,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-25 06:13:28,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 18283 backedges. 376 proven. 2708 refuted. 0 times theorem prover too weak. 15199 trivial. 0 not checked. [2023-12-25 06:13:29,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:30,673 INFO L134 CoverageAnalysis]: Checked inductivity of 18283 backedges. 376 proven. 2785 refuted. 0 times theorem prover too weak. 15122 trivial. 0 not checked. [2023-12-25 06:13:30,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:30,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364746393] [2023-12-25 06:13:30,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364746393] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:13:30,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:30,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 21 [2023-12-25 06:13:30,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554603085] [2023-12-25 06:13:30,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:30,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-25 06:13:30,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:30,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-25 06:13:30,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:13:30,676 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand has 21 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 21 states have internal predecessors, (55), 18 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (25), 9 states have call predecessors, (25), 18 states have call successors, (25) [2023-12-25 06:13:31,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:31,115 INFO L93 Difference]: Finished difference Result 152 states and 274 transitions. [2023-12-25 06:13:31,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 06:13:31,116 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 21 states have internal predecessors, (55), 18 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (25), 9 states have call predecessors, (25), 18 states have call successors, (25) Word has length 527 [2023-12-25 06:13:31,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:31,118 INFO L225 Difference]: With dead ends: 152 [2023-12-25 06:13:31,118 INFO L226 Difference]: Without dead ends: 90 [2023-12-25 06:13:31,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1033 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2023-12-25 06:13:31,120 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 84 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:31,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 198 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:13:31,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-25 06:13:31,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 71. [2023-12-25 06:13:31,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 15 states have call successors, (15), 8 states have call predecessors, (15), 10 states have return successors, (31), 17 states have call predecessors, (31), 15 states have call successors, (31) [2023-12-25 06:13:31,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2023-12-25 06:13:31,127 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 527 [2023-12-25 06:13:31,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:31,127 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2023-12-25 06:13:31,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 21 states have internal predecessors, (55), 18 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (25), 9 states have call predecessors, (25), 18 states have call successors, (25) [2023-12-25 06:13:31,127 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2023-12-25 06:13:31,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2023-12-25 06:13:31,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:31,130 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:31,138 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 [2023-12-25 06:13:31,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:31,335 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:31,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:31,336 INFO L85 PathProgramCache]: Analyzing trace with hash -979193692, now seen corresponding path program 10 times [2023-12-25 06:13:31,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:31,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742142299] [2023-12-25 06:13:31,336 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:13:31,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:31,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:31,338 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:31,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-25 06:13:31,640 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:13:31,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:13:31,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:13:31,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 31665 backedges. 608 proven. 4035 refuted. 0 times theorem prover too weak. 27022 trivial. 0 not checked. [2023-12-25 06:13:31,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 31665 backedges. 608 proven. 4135 refuted. 0 times theorem prover too weak. 26922 trivial. 0 not checked. [2023-12-25 06:13:33,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:33,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742142299] [2023-12-25 06:13:33,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742142299] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:13:33,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:33,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 23 [2023-12-25 06:13:33,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665339169] [2023-12-25 06:13:33,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:33,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 06:13:33,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:33,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 06:13:33,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:13:33,952 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 20 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (28), 10 states have call predecessors, (28), 20 states have call successors, (28) [2023-12-25 06:13:34,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:34,481 INFO L93 Difference]: Finished difference Result 171 states and 313 transitions. [2023-12-25 06:13:34,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-25 06:13:34,482 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 20 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (28), 10 states have call predecessors, (28), 20 states have call successors, (28) Word has length 691 [2023-12-25 06:13:34,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:34,484 INFO L225 Difference]: With dead ends: 171 [2023-12-25 06:13:34,484 INFO L226 Difference]: Without dead ends: 102 [2023-12-25 06:13:34,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1389 GetRequests, 1359 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2023-12-25 06:13:34,486 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 35 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:34,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 268 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:13:34,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-25 06:13:34,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 79. [2023-12-25 06:13:34,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (35), 19 states have call predecessors, (35), 17 states have call successors, (35) [2023-12-25 06:13:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2023-12-25 06:13:34,495 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 691 [2023-12-25 06:13:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:34,496 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2023-12-25 06:13:34,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 20 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (28), 10 states have call predecessors, (28), 20 states have call successors, (28) [2023-12-25 06:13:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2023-12-25 06:13:34,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1121 [2023-12-25 06:13:34,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:34,505 INFO L195 NwaCegarLoop]: trace histogram [177, 177, 143, 88, 88, 88, 88, 88, 88, 55, 34, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:34,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-25 06:13:34,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:34,718 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:34,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:34,719 INFO L85 PathProgramCache]: Analyzing trace with hash -111943124, now seen corresponding path program 11 times [2023-12-25 06:13:34,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:34,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401584439] [2023-12-25 06:13:34,720 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:13:34,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:34,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:34,721 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:34,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-25 06:13:40,894 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 151 check-sat command(s) [2023-12-25 06:13:40,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:13:40,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:13:40,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 83941 backedges. 5260 proven. 2530 refuted. 0 times theorem prover too weak. 76151 trivial. 0 not checked. [2023-12-25 06:13:41,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:43,090 INFO L134 CoverageAnalysis]: Checked inductivity of 83941 backedges. 5260 proven. 2630 refuted. 0 times theorem prover too weak. 76051 trivial. 0 not checked. [2023-12-25 06:13:43,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:43,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401584439] [2023-12-25 06:13:43,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401584439] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:13:43,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:43,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 23 [2023-12-25 06:13:43,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547352031] [2023-12-25 06:13:43,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:43,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 06:13:43,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:43,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 06:13:43,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:13:43,093 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 19 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (29), 12 states have call predecessors, (29), 19 states have call successors, (29) [2023-12-25 06:13:43,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:43,489 INFO L93 Difference]: Finished difference Result 109 states and 140 transitions. [2023-12-25 06:13:43,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 06:13:43,490 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 19 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (29), 12 states have call predecessors, (29), 19 states have call successors, (29) Word has length 1120 [2023-12-25 06:13:43,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:43,493 INFO L225 Difference]: With dead ends: 109 [2023-12-25 06:13:43,493 INFO L226 Difference]: Without dead ends: 105 [2023-12-25 06:13:43,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2247 GetRequests, 2217 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2023-12-25 06:13:43,495 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 102 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:43,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 263 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:13:43,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-25 06:13:43,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 79. [2023-12-25 06:13:43,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (35), 19 states have call predecessors, (35), 17 states have call successors, (35) [2023-12-25 06:13:43,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2023-12-25 06:13:43,508 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 1120 [2023-12-25 06:13:43,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:43,510 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2023-12-25 06:13:43,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.857142857142857) internal successors, (60), 23 states have internal predecessors, (60), 19 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (29), 12 states have call predecessors, (29), 19 states have call successors, (29) [2023-12-25 06:13:43,510 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2023-12-25 06:13:43,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1386 [2023-12-25 06:13:43,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:43,565 INFO L195 NwaCegarLoop]: trace histogram [219, 219, 177, 109, 109, 109, 109, 109, 109, 68, 42, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:43,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-25 06:13:43,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:43,765 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:43,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:43,766 INFO L85 PathProgramCache]: Analyzing trace with hash -753267258, now seen corresponding path program 12 times [2023-12-25 06:13:43,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:43,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159312839] [2023-12-25 06:13:43,767 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:13:43,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:43,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:43,768 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:43,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-25 06:13:44,243 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2023-12-25 06:13:44,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:13:44,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:13:44,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:44,605 INFO L134 CoverageAnalysis]: Checked inductivity of 128718 backedges. 2306 proven. 7267 refuted. 0 times theorem prover too weak. 119145 trivial. 0 not checked. [2023-12-25 06:13:44,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 128718 backedges. 2306 proven. 7360 refuted. 0 times theorem prover too weak. 119052 trivial. 0 not checked. [2023-12-25 06:13:49,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:49,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159312839] [2023-12-25 06:13:49,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159312839] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:13:49,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:49,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 23 [2023-12-25 06:13:49,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695311033] [2023-12-25 06:13:49,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:49,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-25 06:13:49,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:49,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-25 06:13:49,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-12-25 06:13:49,071 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand has 23 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 23 states have internal predecessors, (59), 18 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (29), 13 states have call predecessors, (29), 18 states have call successors, (29) [2023-12-25 06:13:51,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:51,354 INFO L93 Difference]: Finished difference Result 272 states and 397 transitions. [2023-12-25 06:13:51,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-25 06:13:51,355 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 23 states have internal predecessors, (59), 18 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (29), 13 states have call predecessors, (29), 18 states have call successors, (29) Word has length 1385 [2023-12-25 06:13:51,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:51,359 INFO L225 Difference]: With dead ends: 272 [2023-12-25 06:13:51,359 INFO L226 Difference]: Without dead ends: 167 [2023-12-25 06:13:51,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2799 GetRequests, 2747 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=745, Invalid=2117, Unknown=0, NotChecked=0, Total=2862 [2023-12-25 06:13:51,361 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 104 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:51,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 101 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:13:51,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-25 06:13:51,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 95. [2023-12-25 06:13:51,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 60 states have internal predecessors, (64), 19 states have call successors, (19), 11 states have call predecessors, (19), 14 states have return successors, (56), 23 states have call predecessors, (56), 19 states have call successors, (56) [2023-12-25 06:13:51,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 139 transitions. [2023-12-25 06:13:51,373 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 139 transitions. Word has length 1385 [2023-12-25 06:13:51,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:51,375 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 139 transitions. [2023-12-25 06:13:51,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 23 states have internal predecessors, (59), 18 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (29), 13 states have call predecessors, (29), 18 states have call successors, (29) [2023-12-25 06:13:51,375 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 139 transitions. [2023-12-25 06:13:51,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1916 [2023-12-25 06:13:51,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:51,398 INFO L195 NwaCegarLoop]: trace histogram [303, 303, 245, 151, 151, 151, 151, 151, 151, 94, 58, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:51,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-25 06:13:51,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:51,604 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:51,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:51,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1015944830, now seen corresponding path program 13 times [2023-12-25 06:13:51,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:51,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728169671] [2023-12-25 06:13:51,606 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:13:51,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:51,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:51,608 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:51,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-25 06:13:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:13:52,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 06:13:52,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:13:52,869 INFO L134 CoverageAnalysis]: Checked inductivity of 246877 backedges. 1793 proven. 14847 refuted. 0 times theorem prover too weak. 230237 trivial. 0 not checked. [2023-12-25 06:13:52,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:13:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 246877 backedges. 1793 proven. 15002 refuted. 0 times theorem prover too weak. 230082 trivial. 0 not checked. [2023-12-25 06:13:58,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:13:58,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728169671] [2023-12-25 06:13:58,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728169671] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:13:58,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:13:58,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 25] total 27 [2023-12-25 06:13:58,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175944994] [2023-12-25 06:13:58,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:13:58,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-25 06:13:58,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:13:58,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-25 06:13:58,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2023-12-25 06:13:58,303 INFO L87 Difference]: Start difference. First operand 95 states and 139 transitions. Second operand has 27 states, 25 states have (on average 2.8) internal successors, (70), 27 states have internal predecessors, (70), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) [2023-12-25 06:13:59,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:13:59,054 INFO L93 Difference]: Finished difference Result 256 states and 562 transitions. [2023-12-25 06:13:59,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-25 06:13:59,055 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.8) internal successors, (70), 27 states have internal predecessors, (70), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) Word has length 1915 [2023-12-25 06:13:59,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:13:59,057 INFO L225 Difference]: With dead ends: 256 [2023-12-25 06:13:59,057 INFO L226 Difference]: Without dead ends: 163 [2023-12-25 06:13:59,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3839 GetRequests, 3803 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=239, Invalid=1167, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 06:13:59,060 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 145 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:13:59,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 330 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:13:59,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-25 06:13:59,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 104. [2023-12-25 06:13:59,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 66 states have internal predecessors, (67), 21 states have call successors, (21), 11 states have call predecessors, (21), 16 states have return successors, (49), 26 states have call predecessors, (49), 21 states have call successors, (49) [2023-12-25 06:13:59,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 137 transitions. [2023-12-25 06:13:59,071 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 137 transitions. Word has length 1915 [2023-12-25 06:13:59,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:13:59,072 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 137 transitions. [2023-12-25 06:13:59,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.8) internal successors, (70), 27 states have internal predecessors, (70), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) [2023-12-25 06:13:59,072 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 137 transitions. [2023-12-25 06:13:59,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2938 [2023-12-25 06:13:59,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:13:59,121 INFO L195 NwaCegarLoop]: trace histogram [465, 465, 376, 232, 232, 232, 232, 232, 232, 144, 89, 1, 1, 1, 1, 1, 1] [2023-12-25 06:13:59,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-25 06:13:59,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:59,336 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:13:59,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:13:59,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1900092778, now seen corresponding path program 14 times [2023-12-25 06:13:59,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:13:59,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468299971] [2023-12-25 06:13:59,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:13:59,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:13:59,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:13:59,341 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:13:59,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-25 06:14:00,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:14:00,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:14:00,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 4112 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-25 06:14:00,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:14:00,993 INFO L134 CoverageAnalysis]: Checked inductivity of 582408 backedges. 3091 proven. 25120 refuted. 0 times theorem prover too weak. 554197 trivial. 0 not checked. [2023-12-25 06:14:00,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:14:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 582408 backedges. 3091 proven. 25307 refuted. 0 times theorem prover too weak. 554010 trivial. 0 not checked. [2023-12-25 06:14:08,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:14:08,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468299971] [2023-12-25 06:14:08,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468299971] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:14:08,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:14:08,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 27] total 29 [2023-12-25 06:14:08,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648336290] [2023-12-25 06:14:08,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:14:08,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-25 06:14:08,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:14:08,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-25 06:14:08,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2023-12-25 06:14:08,736 INFO L87 Difference]: Start difference. First operand 104 states and 137 transitions. Second operand has 29 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 29 states have internal predecessors, (75), 26 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (37), 13 states have call predecessors, (37), 26 states have call successors, (37) [2023-12-25 06:14:09,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:14:09,597 INFO L93 Difference]: Finished difference Result 249 states and 508 transitions. [2023-12-25 06:14:09,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-25 06:14:09,598 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 29 states have internal predecessors, (75), 26 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (37), 13 states have call predecessors, (37), 26 states have call successors, (37) Word has length 2937 [2023-12-25 06:14:09,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:14:09,603 INFO L225 Difference]: With dead ends: 249 [2023-12-25 06:14:09,603 INFO L226 Difference]: Without dead ends: 147 [2023-12-25 06:14:09,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5884 GetRequests, 5845 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=1368, Unknown=0, NotChecked=0, Total=1640 [2023-12-25 06:14:09,605 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 141 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:14:09,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 391 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 06:14:09,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-25 06:14:09,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 112. [2023-12-25 06:14:09,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 23 states have call successors, (23), 12 states have call predecessors, (23), 17 states have return successors, (53), 28 states have call predecessors, (53), 23 states have call successors, (53) [2023-12-25 06:14:09,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 148 transitions. [2023-12-25 06:14:09,619 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 148 transitions. Word has length 2937 [2023-12-25 06:14:09,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:14:09,621 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 148 transitions. [2023-12-25 06:14:09,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 29 states have internal predecessors, (75), 26 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (37), 13 states have call predecessors, (37), 26 states have call successors, (37) [2023-12-25 06:14:09,622 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 148 transitions. [2023-12-25 06:14:09,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4755 [2023-12-25 06:14:09,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:14:09,832 INFO L195 NwaCegarLoop]: trace histogram [753, 753, 609, 376, 376, 376, 376, 376, 376, 233, 144, 1, 1, 1, 1, 1, 1] [2023-12-25 06:14:09,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-25 06:14:10,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:14:10,045 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:14:10,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:14:10,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2006228766, now seen corresponding path program 15 times [2023-12-25 06:14:10,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:14:10,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074078107] [2023-12-25 06:14:10,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:14:10,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:14:10,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:14:10,051 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:14:10,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-25 06:14:11,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2023-12-25 06:14:11,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:14:11,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-25 06:14:11,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:14:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1529148 backedges. 5156 proven. 44844 refuted. 0 times theorem prover too weak. 1479148 trivial. 0 not checked. [2023-12-25 06:14:11,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:14:21,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1529148 backedges. 5156 proven. 45066 refuted. 0 times theorem prover too weak. 1478926 trivial. 0 not checked. [2023-12-25 06:14:21,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:14:21,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074078107] [2023-12-25 06:14:21,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074078107] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:14:21,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:14:21,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 29] total 31 [2023-12-25 06:14:21,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391938016] [2023-12-25 06:14:21,965 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:14:21,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-25 06:14:21,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:14:21,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-25 06:14:21,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2023-12-25 06:14:21,970 INFO L87 Difference]: Start difference. First operand 112 states and 148 transitions. Second operand has 31 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 31 states have internal predecessors, (80), 28 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (40), 14 states have call predecessors, (40), 28 states have call successors, (40) [2023-12-25 06:14:22,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:14:22,998 INFO L93 Difference]: Finished difference Result 269 states and 564 transitions. [2023-12-25 06:14:22,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-25 06:14:22,999 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 31 states have internal predecessors, (80), 28 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (40), 14 states have call predecessors, (40), 28 states have call successors, (40) Word has length 4754 [2023-12-25 06:14:23,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:14:23,003 INFO L225 Difference]: With dead ends: 269 [2023-12-25 06:14:23,003 INFO L226 Difference]: Without dead ends: 159 [2023-12-25 06:14:23,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9519 GetRequests, 9477 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=307, Invalid=1585, Unknown=0, NotChecked=0, Total=1892 [2023-12-25 06:14:23,005 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 259 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:14:23,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 468 Invalid, 2146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:14:23,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-25 06:14:23,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 120. [2023-12-25 06:14:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 76 states have (on average 1.013157894736842) internal successors, (77), 76 states have internal predecessors, (77), 25 states have call successors, (25), 13 states have call predecessors, (25), 18 states have return successors, (57), 30 states have call predecessors, (57), 25 states have call successors, (57) [2023-12-25 06:14:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 159 transitions. [2023-12-25 06:14:23,018 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 159 transitions. Word has length 4754 [2023-12-25 06:14:23,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:14:23,020 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 159 transitions. [2023-12-25 06:14:23,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 31 states have internal predecessors, (80), 28 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (40), 14 states have call predecessors, (40), 28 states have call successors, (40) [2023-12-25 06:14:23,020 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 159 transitions. [2023-12-25 06:14:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9512 [2023-12-25 06:14:23,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:14:23,601 INFO L195 NwaCegarLoop]: trace histogram [1507, 1507, 1219, 753, 753, 753, 753, 753, 753, 466, 288, 1, 1, 1, 1, 1, 1] [2023-12-25 06:14:23,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-25 06:14:23,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:14:23,810 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:14:23,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:14:23,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1014541182, now seen corresponding path program 16 times [2023-12-25 06:14:23,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:14:23,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285203513] [2023-12-25 06:14:23,819 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:14:23,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:14:23,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:14:23,820 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:14:23,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-25 06:14:27,726 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:14:27,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:14:28,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 13291 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-25 06:14:28,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:14:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6130839 backedges. 9246 proven. 99528 refuted. 0 times theorem prover too weak. 6022065 trivial. 0 not checked. [2023-12-25 06:14:28,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:14:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6130839 backedges. 9246 proven. 99788 refuted. 0 times theorem prover too weak. 6021805 trivial. 0 not checked. [2023-12-25 06:14:46,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:14:46,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285203513] [2023-12-25 06:14:46,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285203513] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:14:46,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:14:46,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 31] total 33 [2023-12-25 06:14:46,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360206229] [2023-12-25 06:14:46,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:14:46,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-25 06:14:46,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:14:46,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-25 06:14:46,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 06:14:46,506 INFO L87 Difference]: Start difference. First operand 120 states and 159 transitions. Second operand has 33 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 33 states have internal predecessors, (85), 30 states have call successors, (31), 1 states have call predecessors, (31), 15 states have return successors, (43), 15 states have call predecessors, (43), 30 states have call successors, (43) [2023-12-25 06:14:47,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:14:47,336 INFO L93 Difference]: Finished difference Result 289 states and 622 transitions. [2023-12-25 06:14:47,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-25 06:14:47,337 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 33 states have internal predecessors, (85), 30 states have call successors, (31), 1 states have call predecessors, (31), 15 states have return successors, (43), 15 states have call predecessors, (43), 30 states have call successors, (43) Word has length 9511 [2023-12-25 06:14:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:14:47,341 INFO L225 Difference]: With dead ends: 289 [2023-12-25 06:14:47,341 INFO L226 Difference]: Without dead ends: 171 [2023-12-25 06:14:47,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19034 GetRequests, 18989 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=344, Invalid=1818, Unknown=0, NotChecked=0, Total=2162 [2023-12-25 06:14:47,343 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 177 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 1827 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:14:47,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 504 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1827 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:14:47,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-25 06:14:47,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 128. [2023-12-25 06:14:47,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 81 states have (on average 1.0123456790123457) internal successors, (82), 81 states have internal predecessors, (82), 27 states have call successors, (27), 14 states have call predecessors, (27), 19 states have return successors, (61), 32 states have call predecessors, (61), 27 states have call successors, (61) [2023-12-25 06:14:47,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 170 transitions. [2023-12-25 06:14:47,379 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 170 transitions. Word has length 9511 [2023-12-25 06:14:47,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:14:47,382 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 170 transitions. [2023-12-25 06:14:47,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 33 states have internal predecessors, (85), 30 states have call successors, (31), 1 states have call predecessors, (31), 15 states have return successors, (43), 15 states have call predecessors, (43), 30 states have call successors, (43) [2023-12-25 06:14:47,382 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 170 transitions. [2023-12-25 06:14:48,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15392 [2023-12-25 06:14:48,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:14:48,962 INFO L195 NwaCegarLoop]: trace histogram [2439, 2439, 1973, 1219, 1219, 1219, 1219, 1219, 1219, 754, 466, 1, 1, 1, 1, 1, 1] [2023-12-25 06:14:49,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-25 06:14:49,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:14:49,182 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:14:49,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:14:49,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2108920650, now seen corresponding path program 17 times [2023-12-25 06:14:49,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:14:49,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884176140] [2023-12-25 06:14:49,194 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:14:49,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:14:49,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:14:49,196 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:14:49,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-25 06:26:20,979 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2128 check-sat command(s) [2023-12-25 06:26:20,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:26:21,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 21449 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-25 06:26:21,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:26:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 16065055 backedges. 156153 proven. 189772 refuted. 0 times theorem prover too weak. 15719130 trivial. 0 not checked. [2023-12-25 06:26:23,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:27:03,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16065055 backedges. 156221 proven. 190674 refuted. 0 times theorem prover too weak. 15718160 trivial. 0 not checked. [2023-12-25 06:27:03,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:27:03,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884176140] [2023-12-25 06:27:03,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884176140] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:27:03,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:27:03,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 33] total 35 [2023-12-25 06:27:03,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882060484] [2023-12-25 06:27:03,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:27:03,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-25 06:27:03,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:27:03,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-25 06:27:03,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1048, Unknown=0, NotChecked=0, Total=1190 [2023-12-25 06:27:03,399 INFO L87 Difference]: Start difference. First operand 128 states and 170 transitions. Second operand has 35 states, 33 states have (on average 2.757575757575758) internal successors, (91), 33 states have internal predecessors, (91), 31 states have call successors, (35), 1 states have call predecessors, (35), 17 states have return successors, (50), 20 states have call predecessors, (50), 31 states have call successors, (50) [2023-12-25 06:27:04,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:27:04,520 INFO L93 Difference]: Finished difference Result 320 states and 773 transitions. [2023-12-25 06:27:04,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-25 06:27:04,521 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 2.757575757575758) internal successors, (91), 33 states have internal predecessors, (91), 31 states have call successors, (35), 1 states have call predecessors, (35), 17 states have return successors, (50), 20 states have call predecessors, (50), 31 states have call successors, (50) Word has length 15391 [2023-12-25 06:27:04,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:27:04,527 INFO L225 Difference]: With dead ends: 320 [2023-12-25 06:27:04,528 INFO L226 Difference]: Without dead ends: 194 [2023-12-25 06:27:04,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30798 GetRequests, 30747 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=559, Invalid=2197, Unknown=0, NotChecked=0, Total=2756 [2023-12-25 06:27:04,530 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 226 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 2407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:27:04,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 507 Invalid, 2407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 1899 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 06:27:04,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-25 06:27:04,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 141. [2023-12-25 06:27:04,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 88 states have (on average 1.0113636363636365) internal successors, (89), 88 states have internal predecessors, (89), 31 states have call successors, (31), 15 states have call predecessors, (31), 21 states have return successors, (107), 37 states have call predecessors, (107), 31 states have call successors, (107) [2023-12-25 06:27:04,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 227 transitions. [2023-12-25 06:27:04,545 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 227 transitions. Word has length 15391 [2023-12-25 06:27:04,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:27:04,549 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 227 transitions. [2023-12-25 06:27:04,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 2.757575757575758) internal successors, (91), 33 states have internal predecessors, (91), 31 states have call successors, (35), 1 states have call predecessors, (35), 17 states have return successors, (50), 20 states have call predecessors, (50), 31 states have call successors, (50) [2023-12-25 06:27:04,549 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 227 transitions. [2023-12-25 06:27:05,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12452 [2023-12-25 06:27:05,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:27:05,884 INFO L195 NwaCegarLoop]: trace histogram [1973, 1973, 1596, 986, 986, 986, 986, 986, 986, 610, 377, 1, 1, 1, 1, 1, 1] [2023-12-25 06:27:06,106 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forcibly destroying the process [2023-12-25 06:27:06,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 137 [2023-12-25 06:27:06,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:27:06,127 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:27:06,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:27:06,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1937938396, now seen corresponding path program 18 times [2023-12-25 06:27:06,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:27:06,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958169226] [2023-12-25 06:27:06,136 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:27:06,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:27:06,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:27:06,138 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:27:06,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-25 06:27:07,620 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2023-12-25 06:27:07,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:27:07,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-25 06:27:07,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:27:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 10511137 backedges. 28062 proven. 114649 refuted. 0 times theorem prover too weak. 10368426 trivial. 0 not checked. [2023-12-25 06:27:08,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:27:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 10511137 backedges. 28062 proven. 114909 refuted. 0 times theorem prover too weak. 10368166 trivial. 0 not checked. [2023-12-25 06:27:34,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:27:34,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958169226] [2023-12-25 06:27:34,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958169226] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:27:34,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:27:34,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 31] total 33 [2023-12-25 06:27:34,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62356960] [2023-12-25 06:27:34,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:27:34,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-25 06:27:34,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:27:34,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-25 06:27:34,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 06:27:34,822 INFO L87 Difference]: Start difference. First operand 141 states and 227 transitions. Second operand has 33 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 33 states have internal predecessors, (85), 29 states have call successors, (32), 1 states have call predecessors, (32), 15 states have return successors, (44), 17 states have call predecessors, (44), 29 states have call successors, (44) [2023-12-25 06:27:35,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:27:35,548 INFO L93 Difference]: Finished difference Result 196 states and 299 transitions. [2023-12-25 06:27:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-25 06:27:35,556 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 33 states have internal predecessors, (85), 29 states have call successors, (32), 1 states have call predecessors, (32), 15 states have return successors, (44), 17 states have call predecessors, (44), 29 states have call successors, (44) Word has length 12451 [2023-12-25 06:27:35,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:27:35,567 INFO L225 Difference]: With dead ends: 196 [2023-12-25 06:27:35,567 INFO L226 Difference]: Without dead ends: 192 [2023-12-25 06:27:35,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24914 GetRequests, 24869 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=344, Invalid=1818, Unknown=0, NotChecked=0, Total=2162 [2023-12-25 06:27:35,570 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 82 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:27:35,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 507 Invalid, 1976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1885 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:27:35,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-25 06:27:35,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 147. [2023-12-25 06:27:35,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 92 states have (on average 1.0108695652173914) internal successors, (93), 92 states have internal predecessors, (93), 31 states have call successors, (31), 15 states have call predecessors, (31), 23 states have return successors, (114), 39 states have call predecessors, (114), 31 states have call successors, (114) [2023-12-25 06:27:35,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 238 transitions. [2023-12-25 06:27:35,590 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 238 transitions. Word has length 12451 [2023-12-25 06:27:35,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:27:35,595 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 238 transitions. [2023-12-25 06:27:35,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.7419354838709675) internal successors, (85), 33 states have internal predecessors, (85), 29 states have call successors, (32), 1 states have call predecessors, (32), 15 states have return successors, (44), 17 states have call predecessors, (44), 29 states have call successors, (44) [2023-12-25 06:27:35,595 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 238 transitions. [2023-12-25 06:27:38,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20149 [2023-12-25 06:27:38,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:27:38,155 INFO L195 NwaCegarLoop]: trace histogram [3193, 3193, 2583, 1596, 1596, 1596, 1596, 1596, 1596, 987, 610, 1, 1, 1, 1, 1, 1] [2023-12-25 06:27:38,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-12-25 06:27:38,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:27:38,365 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:27:38,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:27:38,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1041399448, now seen corresponding path program 19 times [2023-12-25 06:27:38,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:27:38,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086657985] [2023-12-25 06:27:38,381 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:27:38,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:27:38,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:27:38,383 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:27:38,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process Received shutdown request... [2023-12-25 06:27:45,793 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 (24)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 06:27:45,796 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 [2023-12-25 06:27:46,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-25 06:27:46,994 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forcibly destroying the process [2023-12-25 06:27:47,095 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-25 06:27:47,098 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 06:27:47,099 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forcibly destroying the process [2023-12-25 06:27:47,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:27:47,099 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 20149 with TraceHistMax 3193,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [2086657985] and IpTcStrategyModuleCvc4 [865123585]. [2023-12-25 06:27:47,103 INFO L445 BasicCegarLoop]: Path program histogram: [19, 2, 1, 1] [2023-12-25 06:27:47,106 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 06:27:47,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 06:27:47 BoogieIcfgContainer [2023-12-25 06:27:47,108 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 06:27:47,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 137 [2023-12-25 06:27:47,113 INFO L158 Benchmark]: Toolchain (without parser) took 872714.31ms. Allocated memory was 392.2MB in the beginning and 1.5GB in the end (delta: 1.1GB). Free memory was 341.7MB in the beginning and 947.8MB in the end (delta: -606.1MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-25 06:27:47,114 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 196.1MB. Free memory was 148.9MB in the beginning and 148.8MB in the end (delta: 122.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 06:27:47,114 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.48ms. Allocated memory is still 392.2MB. Free memory was 341.3MB in the beginning and 330.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-25 06:27:47,114 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.46ms. Allocated memory is still 392.2MB. Free memory was 330.8MB in the beginning and 329.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 06:27:47,114 INFO L158 Benchmark]: Boogie Preprocessor took 39.42ms. Allocated memory is still 392.2MB. Free memory was 329.2MB in the beginning and 327.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 06:27:47,114 INFO L158 Benchmark]: RCFGBuilder took 319.25ms. Allocated memory is still 392.2MB. Free memory was 327.7MB in the beginning and 315.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-25 06:27:47,116 INFO L158 Benchmark]: TraceAbstraction took 872077.31ms. Allocated memory was 392.2MB in the beginning and 1.5GB in the end (delta: 1.1GB). Free memory was 314.6MB in the beginning and 947.8MB in the end (delta: -633.3MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-25 06:27:47,118 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 196.1MB. Free memory was 148.9MB in the beginning and 148.8MB in the end (delta: 122.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 239.48ms. Allocated memory is still 392.2MB. Free memory was 341.3MB in the beginning and 330.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.46ms. Allocated memory is still 392.2MB. Free memory was 330.8MB in the beginning and 329.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.42ms. Allocated memory is still 392.2MB. Free memory was 329.2MB in the beginning and 327.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 319.25ms. Allocated memory is still 392.2MB. Free memory was 327.7MB in the beginning and 315.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 872077.31ms. Allocated memory was 392.2MB in the beginning and 1.5GB in the end (delta: 1.1GB). Free memory was 314.6MB in the beginning and 947.8MB in the end (delta: -633.3MB). Peak memory consumption was 1.1GB. 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: 29]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 29). Cancelled while NwaCegarLoop was analyzing trace of length 20149 with TraceHistMax 3193,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [2086657985] and IpTcStrategyModuleCvc4 [865123585]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 872.0s, OverallIterations: 23, TraceHistogramMax: 3193, PathProgramHistogramMax: 19, EmptinessCheckTime: 6.4s, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2017 SdHoareTripleChecker+Valid, 7.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1771 mSDsluCounter, 4406 SdHoareTripleChecker+Invalid, 6.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3760 mSDsCounter, 2829 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14329 IncrementalHoareTripleChecker+Invalid, 17158 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2829 mSolverCounterUnsat, 646 mSDtfsCounter, 14329 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 103532 GetRequests, 102957 SyntacticMatches, 7 SemanticMatches, 568 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=147occurred in iteration=22, InterpolantAutomatonStates: 381, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 22 MinimizatonAttempts, 472 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.3s SsaConstructionTime, 703.7s SatisfiabilityAnalysisTime, 131.6s InterpolantComputationTime, 51700 NumberOfCodeBlocks, 33661 NumberOfCodeBlocksAsserted, 2488 NumberOfCheckSat, 103339 ConstructedInterpolants, 0 QuantifiedInterpolants, 110925 SizeOfPredicates, 172 NumberOfNonLiveVariables, 47224 ConjunctsInSsa, 387 ConjunctsInUnsatCore, 42 InterpolantComputations, 2 PerfectInterpolantSequences, 69659819/70678094 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