/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/Ackermann03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 06:05:16,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 06:05:16,526 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 06:05:16,530 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 06:05:16,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 06:05:16,548 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 06:05:16,548 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 06:05:16,549 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 06:05:16,549 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 06:05:16,550 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 06:05:16,550 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 06:05:16,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 06:05:16,551 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 06:05:16,551 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 06:05:16,552 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 06:05:16,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 06:05:16,553 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 06:05:16,553 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 06:05:16,553 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 06:05:16,554 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 06:05:16,554 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 06:05:16,555 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 06:05:16,555 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 06:05:16,555 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 06:05:16,556 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 06:05:16,556 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 06:05:16,556 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 06:05:16,557 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 06:05:16,557 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 06:05:16,557 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 06:05:16,558 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 06:05:16,558 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 06:05:16,558 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 06:05:16,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 06:05:16,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:05:16,559 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 06:05:16,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 06:05:16,560 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 06:05:16,560 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 06:05:16,560 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:16,561 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 06:05:16,561 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 06:05:16,561 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 06:05:16,562 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 06:05:16,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 06:05:16,562 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 06:05:16,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 06:05:16,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 06:05:16,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 06:05:16,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 06:05:16,782 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 06:05:16,782 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 06:05:16,784 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann03.c [2023-12-25 06:05:18,108 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 06:05:18,275 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 06:05:18,276 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Ackermann03.c [2023-12-25 06:05:18,282 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0461fd71e/32b8608a19d04b16b87b5226fb9527a2/FLAG1ed25b5f4 [2023-12-25 06:05:18,296 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0461fd71e/32b8608a19d04b16b87b5226fb9527a2 [2023-12-25 06:05:18,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 06:05:18,299 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 06:05:18,300 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 06:05:18,300 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 06:05:18,305 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 06:05:18,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:05:18" (1/1) ... [2023-12-25 06:05:18,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b236af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:18, skipping insertion in model container [2023-12-25 06:05:18,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:05:18" (1/1) ... [2023-12-25 06:05:18,326 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 06:05:18,447 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/Ackermann03.c[1168,1181] [2023-12-25 06:05:18,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:05:18,471 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 06:05:18,483 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/Ackermann03.c[1168,1181] [2023-12-25 06:05:18,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:05:18,494 INFO L206 MainTranslator]: Completed translation [2023-12-25 06:05:18,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:18 WrapperNode [2023-12-25 06:05:18,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 06:05:18,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 06:05:18,496 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 06:05:18,496 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 06:05:18,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:18" (1/1) ... [2023-12-25 06:05:18,511 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:18" (1/1) ... [2023-12-25 06:05:18,527 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2023-12-25 06:05:18,527 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 06:05:18,528 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 06:05:18,528 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 06:05:18,528 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 06:05:18,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:18" (1/1) ... [2023-12-25 06:05:18,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:18" (1/1) ... [2023-12-25 06:05:18,537 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:18" (1/1) ... [2023-12-25 06:05:18,552 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 06:05:18,553 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:18" (1/1) ... [2023-12-25 06:05:18,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:18" (1/1) ... [2023-12-25 06:05:18,564 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:18" (1/1) ... [2023-12-25 06:05:18,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:18" (1/1) ... [2023-12-25 06:05:18,566 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:18" (1/1) ... [2023-12-25 06:05:18,567 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:18" (1/1) ... [2023-12-25 06:05:18,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 06:05:18,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 06:05:18,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 06:05:18,570 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 06:05:18,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:18" (1/1) ... [2023-12-25 06:05:18,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:05:18,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 06:05:18,614 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 06:05:18,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 06:05:18,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 06:05:18,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 06:05:18,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 06:05:18,728 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2023-12-25 06:05:18,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2023-12-25 06:05:18,718 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 06:05:18,783 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 06:05:18,786 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 06:05:18,953 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 06:05:18,981 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 06:05:18,981 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 06:05:18,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:05:18 BoogieIcfgContainer [2023-12-25 06:05:18,982 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 06:05:18,988 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 06:05:18,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 06:05:18,991 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 06:05:18,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 06:05:18" (1/3) ... [2023-12-25 06:05:18,992 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3262cfbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:05:18, skipping insertion in model container [2023-12-25 06:05:18,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:18" (2/3) ... [2023-12-25 06:05:18,992 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3262cfbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:05:18, skipping insertion in model container [2023-12-25 06:05:18,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:05:18" (3/3) ... [2023-12-25 06:05:18,993 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann03.c [2023-12-25 06:05:19,007 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 06:05:19,008 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 06:05:19,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 06:05:19,060 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;@708d7d5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 06:05:19,061 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 06:05:19,064 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-25 06:05:19,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-25 06:05:19,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:19,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:19,074 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:19,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:19,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1592058167, now seen corresponding path program 1 times [2023-12-25 06:05:19,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:19,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083926764] [2023-12-25 06:05:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:19,090 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 06:05:19,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:19,093 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 06:05:19,120 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 06:05:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:19,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:05:19,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:19,260 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 06:05:19,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:05:19,261 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:19,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083926764] [2023-12-25 06:05:19,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083926764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:05:19,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:05:19,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:05:19,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560831188] [2023-12-25 06:05:19,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:05:19,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:05:19,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:19,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:05:19,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:05:19,313 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 06:05:19,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:19,427 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2023-12-25 06:05:19,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:05:19,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 11 [2023-12-25 06:05:19,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:19,437 INFO L225 Difference]: With dead ends: 43 [2023-12-25 06:05:19,437 INFO L226 Difference]: Without dead ends: 22 [2023-12-25 06:05:19,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 06:05:19,443 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:19,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 49 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:19,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-25 06:05:19,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-25 06:05:19,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-25 06:05:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2023-12-25 06:05:19,477 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 11 [2023-12-25 06:05:19,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:19,478 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2023-12-25 06:05:19,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 06:05:19,478 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2023-12-25 06:05:19,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-25 06:05:19,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:19,481 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:19,496 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 06:05:19,682 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 06:05:19,683 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:19,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1453353420, now seen corresponding path program 1 times [2023-12-25 06:05:19,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:19,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913682728] [2023-12-25 06:05:19,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:19,685 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 06:05:19,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:19,686 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 06:05:19,688 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 (3)] Waiting until timeout for monitored process [2023-12-25 06:05:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:19,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:05:19,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:19,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 06:05:19,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:19,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 06:05:19,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:19,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913682728] [2023-12-25 06:05:19,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913682728] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:19,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:19,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-25 06:05:19,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557332883] [2023-12-25 06:05:19,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:19,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 06:05:19,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:19,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 06:05:19,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-25 06:05:19,853 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-25 06:05:19,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:19,977 INFO L93 Difference]: Finished difference Result 58 states and 103 transitions. [2023-12-25 06:05:19,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 06:05:19,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 18 [2023-12-25 06:05:19,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:19,980 INFO L225 Difference]: With dead ends: 58 [2023-12-25 06:05:19,980 INFO L226 Difference]: Without dead ends: 36 [2023-12-25 06:05:19,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-25 06:05:19,982 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:19,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 63 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:19,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-25 06:05:19,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-25 06:05:19,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (25), 10 states have call predecessors, (25), 8 states have call successors, (25) [2023-12-25 06:05:19,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 59 transitions. [2023-12-25 06:05:19,994 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 59 transitions. Word has length 18 [2023-12-25 06:05:19,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:19,994 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 59 transitions. [2023-12-25 06:05:19,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-25 06:05:19,995 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 59 transitions. [2023-12-25 06:05:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-25 06:05:19,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:19,997 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:20,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:20,200 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 06:05:20,203 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:20,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:20,204 INFO L85 PathProgramCache]: Analyzing trace with hash 229730088, now seen corresponding path program 1 times [2023-12-25 06:05:20,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:20,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258344417] [2023-12-25 06:05:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:20,205 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 06:05:20,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:20,207 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 06:05:20,209 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 06:05:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:20,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:05:20,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-25 06:05:20,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:20,670 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-25 06:05:20,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:20,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258344417] [2023-12-25 06:05:20,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258344417] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:20,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:20,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2023-12-25 06:05:20,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079052295] [2023-12-25 06:05:20,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:20,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 06:05:20,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:20,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 06:05:20,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:05:20,673 INFO L87 Difference]: Start difference. First operand 36 states and 59 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 6 states have call successors, (9) [2023-12-25 06:05:20,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:20,842 INFO L93 Difference]: Finished difference Result 99 states and 234 transitions. [2023-12-25 06:05:20,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 06:05:20,845 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 6 states have call successors, (9) Word has length 42 [2023-12-25 06:05:20,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:20,847 INFO L225 Difference]: With dead ends: 99 [2023-12-25 06:05:20,848 INFO L226 Difference]: Without dead ends: 65 [2023-12-25 06:05:20,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:05:20,850 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 20 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:20,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 82 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-25 06:05:20,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2023-12-25 06:05:20,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 13 states have call successors, (13), 4 states have call predecessors, (13), 9 states have return successors, (41), 18 states have call predecessors, (41), 13 states have call successors, (41) [2023-12-25 06:05:20,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 96 transitions. [2023-12-25 06:05:20,864 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 96 transitions. Word has length 42 [2023-12-25 06:05:20,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:20,865 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 96 transitions. [2023-12-25 06:05:20,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 6 states have call successors, (9) [2023-12-25 06:05:20,865 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 96 transitions. [2023-12-25 06:05:20,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-25 06:05:20,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:20,868 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:20,885 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 06:05:21,071 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 06:05:21,071 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:21,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:21,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1936097191, now seen corresponding path program 2 times [2023-12-25 06:05:21,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:21,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100883404] [2023-12-25 06:05:21,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:05:21,072 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 06:05:21,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:21,083 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 06:05:21,084 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 06:05:21,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:05:21,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:21,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 06:05:21,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 132 proven. 43 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-12-25 06:05:21,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 68 proven. 79 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-25 06:05:22,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:22,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100883404] [2023-12-25 06:05:22,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100883404] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:22,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:22,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 24 [2023-12-25 06:05:22,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143876927] [2023-12-25 06:05:22,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:22,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-25 06:05:22,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:22,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-25 06:05:22,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2023-12-25 06:05:22,035 INFO L87 Difference]: Start difference. First operand 59 states and 96 transitions. Second operand has 24 states, 20 states have (on average 2.3) internal successors, (46), 14 states have internal predecessors, (46), 7 states have call successors, (11), 2 states have call predecessors, (11), 10 states have return successors, (19), 13 states have call predecessors, (19), 7 states have call successors, (19) [2023-12-25 06:05:23,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:23,466 INFO L93 Difference]: Finished difference Result 367 states and 1049 transitions. [2023-12-25 06:05:23,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-25 06:05:23,468 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 2.3) internal successors, (46), 14 states have internal predecessors, (46), 7 states have call successors, (11), 2 states have call predecessors, (11), 10 states have return successors, (19), 13 states have call predecessors, (19), 7 states have call successors, (19) Word has length 75 [2023-12-25 06:05:23,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:23,487 INFO L225 Difference]: With dead ends: 367 [2023-12-25 06:05:23,488 INFO L226 Difference]: Without dead ends: 312 [2023-12-25 06:05:23,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=913, Invalid=4489, Unknown=0, NotChecked=0, Total=5402 [2023-12-25 06:05:23,513 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 55 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:23,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 207 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:05:23,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-12-25 06:05:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 138. [2023-12-25 06:05:23,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 81 states have (on average 1.0740740740740742) internal successors, (87), 84 states have internal predecessors, (87), 23 states have call successors, (23), 4 states have call predecessors, (23), 33 states have return successors, (216), 49 states have call predecessors, (216), 23 states have call successors, (216) [2023-12-25 06:05:23,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 326 transitions. [2023-12-25 06:05:23,676 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 326 transitions. Word has length 75 [2023-12-25 06:05:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:23,677 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 326 transitions. [2023-12-25 06:05:23,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 2.3) internal successors, (46), 14 states have internal predecessors, (46), 7 states have call successors, (11), 2 states have call predecessors, (11), 10 states have return successors, (19), 13 states have call predecessors, (19), 7 states have call successors, (19) [2023-12-25 06:05:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 326 transitions. [2023-12-25 06:05:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-25 06:05:23,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:23,699 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 16, 10, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:23,706 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 (5)] Ended with exit code 0 [2023-12-25 06:05:23,906 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 06:05:23,907 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:23,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:23,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1648110594, now seen corresponding path program 3 times [2023-12-25 06:05:23,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:23,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483881649] [2023-12-25 06:05:23,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:05:23,908 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 06:05:23,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:23,913 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 06:05:23,916 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 06:05:24,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-12-25 06:05:24,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:24,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 06:05:24,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1570 backedges. 593 proven. 75 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2023-12-25 06:05:24,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1570 backedges. 513 proven. 93 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked. [2023-12-25 06:05:25,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:25,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483881649] [2023-12-25 06:05:25,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483881649] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:25,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:25,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 25 [2023-12-25 06:05:25,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901227530] [2023-12-25 06:05:25,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:25,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-25 06:05:25,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:25,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-25 06:05:25,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2023-12-25 06:05:25,175 INFO L87 Difference]: Start difference. First operand 138 states and 326 transitions. Second operand has 25 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 15 states have internal predecessors, (49), 10 states have call successors, (14), 2 states have call predecessors, (14), 11 states have return successors, (24), 14 states have call predecessors, (24), 10 states have call successors, (24) [2023-12-25 06:05:27,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:27,200 INFO L93 Difference]: Finished difference Result 461 states and 1485 transitions. [2023-12-25 06:05:27,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-25 06:05:27,201 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 15 states have internal predecessors, (49), 10 states have call successors, (14), 2 states have call predecessors, (14), 11 states have return successors, (24), 14 states have call predecessors, (24), 10 states have call successors, (24) Word has length 168 [2023-12-25 06:05:27,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:27,209 INFO L225 Difference]: With dead ends: 461 [2023-12-25 06:05:27,210 INFO L226 Difference]: Without dead ends: 283 [2023-12-25 06:05:27,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2100 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1272, Invalid=6918, Unknown=0, NotChecked=0, Total=8190 [2023-12-25 06:05:27,219 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 34 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:27,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 228 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:05:27,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-25 06:05:27,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 161. [2023-12-25 06:05:27,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 97 states have (on average 1.1030927835051547) internal successors, (107), 100 states have internal predecessors, (107), 26 states have call successors, (26), 7 states have call predecessors, (26), 37 states have return successors, (211), 53 states have call predecessors, (211), 26 states have call successors, (211) [2023-12-25 06:05:27,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 344 transitions. [2023-12-25 06:05:27,274 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 344 transitions. Word has length 168 [2023-12-25 06:05:27,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:27,275 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 344 transitions. [2023-12-25 06:05:27,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 15 states have internal predecessors, (49), 10 states have call successors, (14), 2 states have call predecessors, (14), 11 states have return successors, (24), 14 states have call predecessors, (24), 10 states have call successors, (24) [2023-12-25 06:05:27,276 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 344 transitions. [2023-12-25 06:05:27,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-25 06:05:27,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:27,281 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 17, 12, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:27,301 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 06:05:27,484 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 06:05:27,485 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:27,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:27,486 INFO L85 PathProgramCache]: Analyzing trace with hash -957236747, now seen corresponding path program 4 times [2023-12-25 06:05:27,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:27,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345031971] [2023-12-25 06:05:27,487 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:05:27,487 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 06:05:27,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:27,488 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 06:05:27,490 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 06:05:27,646 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:05:27,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:27,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 06:05:27,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1955 backedges. 1044 proven. 115 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2023-12-25 06:05:27,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1955 backedges. 165 proven. 590 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-25 06:05:28,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:28,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345031971] [2023-12-25 06:05:28,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345031971] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:28,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:28,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18] total 27 [2023-12-25 06:05:28,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116709368] [2023-12-25 06:05:28,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:28,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-25 06:05:28,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:28,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-25 06:05:28,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2023-12-25 06:05:28,889 INFO L87 Difference]: Start difference. First operand 161 states and 344 transitions. Second operand has 27 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 17 states have internal predecessors, (58), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 15 states have call predecessors, (28), 12 states have call successors, (28) [2023-12-25 06:05:31,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:31,288 INFO L93 Difference]: Finished difference Result 646 states and 2017 transitions. [2023-12-25 06:05:31,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-12-25 06:05:31,289 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 17 states have internal predecessors, (58), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 15 states have call predecessors, (28), 12 states have call successors, (28) Word has length 185 [2023-12-25 06:05:31,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:31,300 INFO L225 Difference]: With dead ends: 646 [2023-12-25 06:05:31,300 INFO L226 Difference]: Without dead ends: 489 [2023-12-25 06:05:31,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2834 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1458, Invalid=9048, Unknown=0, NotChecked=0, Total=10506 [2023-12-25 06:05:31,309 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 55 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:31,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 261 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:05:31,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-12-25 06:05:31,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 260. [2023-12-25 06:05:31,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 152 states have (on average 1.0921052631578947) internal successors, (166), 155 states have internal predecessors, (166), 46 states have call successors, (46), 10 states have call predecessors, (46), 61 states have return successors, (557), 94 states have call predecessors, (557), 46 states have call successors, (557) [2023-12-25 06:05:31,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 769 transitions. [2023-12-25 06:05:31,374 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 769 transitions. Word has length 185 [2023-12-25 06:05:31,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:31,375 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 769 transitions. [2023-12-25 06:05:31,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 17 states have internal predecessors, (58), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 15 states have call predecessors, (28), 12 states have call successors, (28) [2023-12-25 06:05:31,375 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 769 transitions. [2023-12-25 06:05:31,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-25 06:05:31,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:31,378 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 12, 8, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:31,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:31,586 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 06:05:31,587 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:31,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:31,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1249943408, now seen corresponding path program 5 times [2023-12-25 06:05:31,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:31,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355888006] [2023-12-25 06:05:31,588 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:05:31,589 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 06:05:31,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:31,591 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 06:05:31,596 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 06:05:31,743 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-12-25 06:05:31,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:31,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-25 06:05:31,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 236 proven. 192 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2023-12-25 06:05:31,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:33,364 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 248 proven. 202 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2023-12-25 06:05:33,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:33,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355888006] [2023-12-25 06:05:33,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355888006] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:33,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:33,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24] total 38 [2023-12-25 06:05:33,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154622379] [2023-12-25 06:05:33,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:33,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-25 06:05:33,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:33,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-25 06:05:33,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 06:05:33,369 INFO L87 Difference]: Start difference. First operand 260 states and 769 transitions. Second operand has 38 states, 30 states have (on average 1.8) internal successors, (54), 22 states have internal predecessors, (54), 10 states have call successors, (13), 1 states have call predecessors, (13), 16 states have return successors, (25), 19 states have call predecessors, (25), 10 states have call successors, (25) [2023-12-25 06:05:42,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:42,311 INFO L93 Difference]: Finished difference Result 2938 states and 15977 transitions. [2023-12-25 06:05:42,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2023-12-25 06:05:42,311 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 30 states have (on average 1.8) internal successors, (54), 22 states have internal predecessors, (54), 10 states have call successors, (13), 1 states have call predecessors, (13), 16 states have return successors, (25), 19 states have call predecessors, (25), 10 states have call successors, (25) Word has length 130 [2023-12-25 06:05:42,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:42,523 INFO L225 Difference]: With dead ends: 2938 [2023-12-25 06:05:42,523 INFO L226 Difference]: Without dead ends: 2682 [2023-12-25 06:05:42,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21514 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=8127, Invalid=54623, Unknown=0, NotChecked=0, Total=62750 [2023-12-25 06:05:42,582 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 44 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 3670 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 3773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:42,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 342 Invalid, 3773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3670 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-25 06:05:42,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2023-12-25 06:05:43,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 627. [2023-12-25 06:05:43,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 370 states have (on average 1.037837837837838) internal successors, (384), 373 states have internal predecessors, (384), 86 states have call successors, (86), 10 states have call predecessors, (86), 170 states have return successors, (3747), 243 states have call predecessors, (3747), 86 states have call successors, (3747) [2023-12-25 06:05:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 4217 transitions. [2023-12-25 06:05:43,034 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 4217 transitions. Word has length 130 [2023-12-25 06:05:43,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:43,035 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 4217 transitions. [2023-12-25 06:05:43,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 30 states have (on average 1.8) internal successors, (54), 22 states have internal predecessors, (54), 10 states have call successors, (13), 1 states have call predecessors, (13), 16 states have return successors, (25), 19 states have call predecessors, (25), 10 states have call successors, (25) [2023-12-25 06:05:43,036 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 4217 transitions. [2023-12-25 06:05:43,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-25 06:05:43,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:43,041 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 15, 10, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:43,047 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 06:05:43,247 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 06:05:43,247 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:43,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:43,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1349801883, now seen corresponding path program 6 times [2023-12-25 06:05:43,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:43,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120403219] [2023-12-25 06:05:43,249 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:05:43,250 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 06:05:43,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:43,265 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 06:05:43,267 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 06:05:43,404 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-25 06:05:43,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:43,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 06:05:43,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1443 backedges. 591 proven. 26 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2023-12-25 06:05:43,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:44,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1443 backedges. 509 proven. 54 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2023-12-25 06:05:44,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:44,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120403219] [2023-12-25 06:05:44,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120403219] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:44,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:44,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 12 [2023-12-25 06:05:44,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912489168] [2023-12-25 06:05:44,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:44,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 06:05:44,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:44,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 06:05:44,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-25 06:05:44,131 INFO L87 Difference]: Start difference. First operand 627 states and 4217 transitions. Second operand has 12 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 8 states have call successors, (14), 2 states have call predecessors, (14), 6 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) [2023-12-25 06:05:44,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:44,696 INFO L93 Difference]: Finished difference Result 1629 states and 26276 transitions. [2023-12-25 06:05:44,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 06:05:44,696 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 8 states have call successors, (14), 2 states have call predecessors, (14), 6 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) Word has length 161 [2023-12-25 06:05:44,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:44,906 INFO L225 Difference]: With dead ends: 1629 [2023-12-25 06:05:44,906 INFO L226 Difference]: Without dead ends: 1006 [2023-12-25 06:05:44,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-12-25 06:05:44,985 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 38 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:44,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 125 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:05:44,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2023-12-25 06:05:45,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 946. [2023-12-25 06:05:45,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 565 states have (on average 1.0300884955752212) internal successors, (582), 568 states have internal predecessors, (582), 118 states have call successors, (118), 14 states have call predecessors, (118), 262 states have return successors, (8648), 363 states have call predecessors, (8648), 118 states have call successors, (8648) [2023-12-25 06:05:45,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 9348 transitions. [2023-12-25 06:05:45,672 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 9348 transitions. Word has length 161 [2023-12-25 06:05:45,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:45,672 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 9348 transitions. [2023-12-25 06:05:45,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 8 states have call successors, (14), 2 states have call predecessors, (14), 6 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) [2023-12-25 06:05:45,673 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 9348 transitions. [2023-12-25 06:05:45,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 06:05:45,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:45,676 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:45,683 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 (9)] Ended with exit code 0 [2023-12-25 06:05:45,881 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 06:05:45,882 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:45,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:45,882 INFO L85 PathProgramCache]: Analyzing trace with hash 68754419, now seen corresponding path program 7 times [2023-12-25 06:05:45,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:45,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095770273] [2023-12-25 06:05:45,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:05:45,883 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 06:05:45,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:45,884 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 06:05:45,915 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 06:05:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:46,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-25 06:05:46,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1686 backedges. 553 proven. 148 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2023-12-25 06:05:46,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1686 backedges. 567 proven. 179 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2023-12-25 06:05:47,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:47,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095770273] [2023-12-25 06:05:47,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095770273] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:47,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:47,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 33] total 35 [2023-12-25 06:05:47,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063382015] [2023-12-25 06:05:47,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:47,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-25 06:05:47,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:47,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-25 06:05:47,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2023-12-25 06:05:47,736 INFO L87 Difference]: Start difference. First operand 946 states and 9348 transitions. Second operand has 35 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 23 states have internal predecessors, (47), 6 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (22), 13 states have call predecessors, (22), 6 states have call successors, (22) [2023-12-25 06:06:00,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:00,340 INFO L93 Difference]: Finished difference Result 4918 states and 46965 transitions. [2023-12-25 06:06:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2023-12-25 06:06:00,341 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 23 states have internal predecessors, (47), 6 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (22), 13 states have call predecessors, (22), 6 states have call successors, (22) Word has length 171 [2023-12-25 06:06:00,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:00,885 INFO L225 Difference]: With dead ends: 4918 [2023-12-25 06:06:00,885 INFO L226 Difference]: Without dead ends: 4914 [2023-12-25 06:06:00,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15278 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=3472, Invalid=42110, Unknown=0, NotChecked=0, Total=45582 [2023-12-25 06:06:00,966 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 131 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 8443 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 8744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 8443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:00,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 526 Invalid, 8744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 8443 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-25 06:06:00,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4914 states. [2023-12-25 06:06:02,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4914 to 996. [2023-12-25 06:06:02,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 597 states have (on average 1.0284757118927974) internal successors, (614), 600 states have internal predecessors, (614), 120 states have call successors, (120), 14 states have call predecessors, (120), 278 states have return successors, (9224), 381 states have call predecessors, (9224), 120 states have call successors, (9224) [2023-12-25 06:06:02,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 9958 transitions. [2023-12-25 06:06:02,695 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 9958 transitions. Word has length 171 [2023-12-25 06:06:02,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:02,696 INFO L495 AbstractCegarLoop]: Abstraction has 996 states and 9958 transitions. [2023-12-25 06:06:02,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 23 states have internal predecessors, (47), 6 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (22), 13 states have call predecessors, (22), 6 states have call successors, (22) [2023-12-25 06:06:02,696 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 9958 transitions. [2023-12-25 06:06:02,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-25 06:06:02,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:02,698 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 12, 9, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:02,704 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 (10)] Ended with exit code 0 [2023-12-25 06:06:02,904 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 06:06:02,904 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:02,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:02,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1718245151, now seen corresponding path program 8 times [2023-12-25 06:06:02,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:02,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718940459] [2023-12-25 06:06:02,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:06:02,908 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 06:06:02,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:02,930 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 06:06:02,958 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 06:06:03,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:06:03,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:03,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-25 06:06:03,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:03,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 320 proven. 229 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2023-12-25 06:06:03,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 338 proven. 246 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2023-12-25 06:06:04,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:04,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718940459] [2023-12-25 06:06:04,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718940459] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:06:04,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:04,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26] total 40 [2023-12-25 06:06:04,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747227806] [2023-12-25 06:06:04,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:04,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-25 06:06:04,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:04,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-25 06:06:04,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 06:06:04,679 INFO L87 Difference]: Start difference. First operand 996 states and 9958 transitions. Second operand has 40 states, 32 states have (on average 1.96875) internal successors, (63), 24 states have internal predecessors, (63), 15 states have call successors, (18), 1 states have call predecessors, (18), 18 states have return successors, (31), 21 states have call predecessors, (31), 15 states have call successors, (31) [2023-12-25 06:06:22,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:22,383 INFO L93 Difference]: Finished difference Result 5629 states and 60919 transitions. [2023-12-25 06:06:22,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 491 states. [2023-12-25 06:06:22,383 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 32 states have (on average 1.96875) internal successors, (63), 24 states have internal predecessors, (63), 15 states have call successors, (18), 1 states have call predecessors, (18), 18 states have return successors, (31), 21 states have call predecessors, (31), 15 states have call successors, (31) Word has length 135 [2023-12-25 06:06:22,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:22,926 INFO L225 Difference]: With dead ends: 5629 [2023-12-25 06:06:22,927 INFO L226 Difference]: Without dead ends: 4316 [2023-12-25 06:06:23,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 523 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120365 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=25910, Invalid=249190, Unknown=0, NotChecked=0, Total=275100 [2023-12-25 06:06:23,099 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 45 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 3656 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 3950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 3656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:23,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 452 Invalid, 3950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 3656 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-25 06:06:23,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4316 states. [2023-12-25 06:06:23,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4316 to 1010. [2023-12-25 06:06:23,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 597 states have (on average 1.0284757118927974) internal successors, (614), 600 states have internal predecessors, (614), 134 states have call successors, (134), 14 states have call predecessors, (134), 278 states have return successors, (9224), 395 states have call predecessors, (9224), 134 states have call successors, (9224) [2023-12-25 06:06:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 9972 transitions. [2023-12-25 06:06:23,909 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 9972 transitions. Word has length 135 [2023-12-25 06:06:23,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:23,909 INFO L495 AbstractCegarLoop]: Abstraction has 1010 states and 9972 transitions. [2023-12-25 06:06:23,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 32 states have (on average 1.96875) internal successors, (63), 24 states have internal predecessors, (63), 15 states have call successors, (18), 1 states have call predecessors, (18), 18 states have return successors, (31), 21 states have call predecessors, (31), 15 states have call successors, (31) [2023-12-25 06:06:23,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 9972 transitions. [2023-12-25 06:06:23,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-25 06:06:23,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:23,915 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 16, 13, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:23,919 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 06:06:24,119 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 06:06:24,119 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:24,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:24,120 INFO L85 PathProgramCache]: Analyzing trace with hash 669112313, now seen corresponding path program 9 times [2023-12-25 06:06:24,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:24,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144519412] [2023-12-25 06:06:24,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:06:24,121 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 06:06:24,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:24,122 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 06:06:24,152 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 06:06:24,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2023-12-25 06:06:24,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:24,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-25 06:06:24,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1954 backedges. 540 proven. 561 refuted. 0 times theorem prover too weak. 853 trivial. 0 not checked. [2023-12-25 06:06:24,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1954 backedges. 569 proven. 632 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2023-12-25 06:06:26,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:26,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144519412] [2023-12-25 06:06:26,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144519412] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:06:26,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:26,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 33] total 47 [2023-12-25 06:06:26,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076013715] [2023-12-25 06:06:26,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:26,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-25 06:06:26,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:26,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-25 06:06:26,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1985, Unknown=0, NotChecked=0, Total=2162 [2023-12-25 06:06:26,744 INFO L87 Difference]: Start difference. First operand 1010 states and 9972 transitions. Second operand has 47 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 31 states have internal predecessors, (82), 23 states have call successors, (26), 1 states have call predecessors, (26), 22 states have return successors, (43), 25 states have call predecessors, (43), 23 states have call successors, (43) [2023-12-25 06:07:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:16,059 INFO L93 Difference]: Finished difference Result 12446 states and 178686 transitions. [2023-12-25 06:07:16,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1070 states. [2023-12-25 06:07:16,060 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 31 states have internal predecessors, (82), 23 states have call successors, (26), 1 states have call predecessors, (26), 22 states have return successors, (43), 25 states have call predecessors, (43), 23 states have call successors, (43) Word has length 183 [2023-12-25 06:07:16,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:19,856 INFO L225 Difference]: With dead ends: 12446 [2023-12-25 06:07:19,857 INFO L226 Difference]: Without dead ends: 11440 [2023-12-25 06:07:20,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1425 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 1106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576161 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=64097, Invalid=1162459, Unknown=0, NotChecked=0, Total=1226556 [2023-12-25 06:07:20,405 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 123 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 15877 mSolverCounterSat, 1052 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 16929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1052 IncrementalHoareTripleChecker+Valid, 15877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:20,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1103 Invalid, 16929 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1052 Valid, 15877 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-25 06:07:20,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11440 states. [2023-12-25 06:07:25,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11440 to 2891. [2023-12-25 06:07:25,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2891 states, 1579 states have (on average 1.0183660544648512) internal successors, (1608), 1581 states have internal predecessors, (1608), 569 states have call successors, (569), 35 states have call predecessors, (569), 742 states have return successors, (91304), 1274 states have call predecessors, (91304), 569 states have call successors, (91304) [2023-12-25 06:07:27,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 93481 transitions. [2023-12-25 06:07:27,619 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 93481 transitions. Word has length 183 [2023-12-25 06:07:27,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:27,619 INFO L495 AbstractCegarLoop]: Abstraction has 2891 states and 93481 transitions. [2023-12-25 06:07:27,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 31 states have internal predecessors, (82), 23 states have call successors, (26), 1 states have call predecessors, (26), 22 states have return successors, (43), 25 states have call predecessors, (43), 23 states have call successors, (43) [2023-12-25 06:07:27,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 93481 transitions. [2023-12-25 06:07:27,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-12-25 06:07:27,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:27,639 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 19, 16, 15, 15, 15, 15, 15, 15, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:27,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-25 06:07:27,844 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 06:07:27,844 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:27,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:27,845 INFO L85 PathProgramCache]: Analyzing trace with hash 759788479, now seen corresponding path program 10 times [2023-12-25 06:07:27,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:27,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027471450] [2023-12-25 06:07:27,845 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:07:27,845 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 06:07:27,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:27,847 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 06:07:27,882 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 06:07:27,972 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:07:27,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:27,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-25 06:07:27,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:28,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2878 backedges. 1566 proven. 211 refuted. 0 times theorem prover too weak. 1101 trivial. 0 not checked. [2023-12-25 06:07:28,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:29,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2878 backedges. 228 proven. 867 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2023-12-25 06:07:29,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:29,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027471450] [2023-12-25 06:07:29,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027471450] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:29,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:29,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19] total 21 [2023-12-25 06:07:29,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285823985] [2023-12-25 06:07:29,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:29,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-25 06:07:29,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:29,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-25 06:07:29,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:07:29,172 INFO L87 Difference]: Start difference. First operand 2891 states and 93481 transitions. Second operand has 21 states, 19 states have (on average 3.0) internal successors, (57), 16 states have internal predecessors, (57), 12 states have call successors, (19), 2 states have call predecessors, (19), 11 states have return successors, (28), 11 states have call predecessors, (28), 12 states have call successors, (28) [2023-12-25 06:07:38,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:38,928 INFO L93 Difference]: Finished difference Result 7364 states and 300982 transitions. [2023-12-25 06:07:38,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-25 06:07:38,929 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.0) internal successors, (57), 16 states have internal predecessors, (57), 12 states have call successors, (19), 2 states have call predecessors, (19), 11 states have return successors, (28), 11 states have call predecessors, (28), 12 states have call successors, (28) Word has length 219 [2023-12-25 06:07:38,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:40,934 INFO L225 Difference]: With dead ends: 7364 [2023-12-25 06:07:40,935 INFO L226 Difference]: Without dead ends: 4477 [2023-12-25 06:07:41,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=894, Invalid=3798, Unknown=0, NotChecked=0, Total=4692 [2023-12-25 06:07:41,420 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 81 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:41,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 278 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:07:41,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4477 states. [2023-12-25 06:07:44,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4477 to 3238. [2023-12-25 06:07:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3238 states, 1783 states have (on average 1.0201906898485698) internal successors, (1819), 1785 states have internal predecessors, (1819), 625 states have call successors, (625), 48 states have call predecessors, (625), 829 states have return successors, (92602), 1404 states have call predecessors, (92602), 625 states have call successors, (92602) [2023-12-25 06:07:46,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3238 states to 3238 states and 95046 transitions. [2023-12-25 06:07:46,104 INFO L78 Accepts]: Start accepts. Automaton has 3238 states and 95046 transitions. Word has length 219 [2023-12-25 06:07:46,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:46,105 INFO L495 AbstractCegarLoop]: Abstraction has 3238 states and 95046 transitions. [2023-12-25 06:07:46,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.0) internal successors, (57), 16 states have internal predecessors, (57), 12 states have call successors, (19), 2 states have call predecessors, (19), 11 states have return successors, (28), 11 states have call predecessors, (28), 12 states have call successors, (28) [2023-12-25 06:07:46,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3238 states and 95046 transitions. [2023-12-25 06:07:46,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-25 06:07:46,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:46,121 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 42, 25, 24, 24, 24, 24, 24, 24, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:46,141 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 06:07:46,326 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 06:07:46,327 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:46,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:46,327 INFO L85 PathProgramCache]: Analyzing trace with hash -2074047053, now seen corresponding path program 11 times [2023-12-25 06:07:46,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:46,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784295733] [2023-12-25 06:07:46,328 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:07:46,328 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 06:07:46,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:46,329 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 06:07:46,517 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 06:07:46,640 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-25 06:07:46,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:46,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-25 06:07:46,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 10839 backedges. 5726 proven. 513 refuted. 0 times theorem prover too weak. 4600 trivial. 0 not checked. [2023-12-25 06:07:46,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:48,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10839 backedges. 486 proven. 1718 refuted. 0 times theorem prover too weak. 8635 trivial. 0 not checked. [2023-12-25 06:07:48,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:48,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784295733] [2023-12-25 06:07:48,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784295733] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:48,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:48,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 25] total 40 [2023-12-25 06:07:48,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562203496] [2023-12-25 06:07:48,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:48,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-25 06:07:48,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:48,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-25 06:07:48,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 06:07:48,762 INFO L87 Difference]: Start difference. First operand 3238 states and 95046 transitions. Second operand has 40 states, 32 states have (on average 1.9375) internal successors, (62), 22 states have internal predecessors, (62), 11 states have call successors, (17), 2 states have call predecessors, (17), 16 states have return successors, (32), 21 states have call predecessors, (32), 11 states have call successors, (32) [2023-12-25 06:08:27,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:08:27,987 INFO L93 Difference]: Finished difference Result 24916 states and 876056 transitions. [2023-12-25 06:08:27,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2023-12-25 06:08:27,988 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 32 states have (on average 1.9375) internal successors, (62), 22 states have internal predecessors, (62), 11 states have call successors, (17), 2 states have call predecessors, (17), 16 states have return successors, (32), 21 states have call predecessors, (32), 11 states have call successors, (32) Word has length 425 [2023-12-25 06:08:27,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:08:42,491 INFO L225 Difference]: With dead ends: 24916 [2023-12-25 06:08:42,491 INFO L226 Difference]: Without dead ends: 21682 [2023-12-25 06:08:44,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1089 GetRequests, 810 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28953 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=9969, Invalid=68711, Unknown=0, NotChecked=0, Total=78680 [2023-12-25 06:08:44,924 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 48 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 2581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:08:44,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 317 Invalid, 2581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 06:08:44,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21682 states. [2023-12-25 06:09:04,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21682 to 4173. [2023-12-25 06:09:04,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4173 states, 2327 states have (on average 1.0154705629565965) internal successors, (2363), 2329 states have internal predecessors, (2363), 744 states have call successors, (744), 48 states have call predecessors, (744), 1101 states have return successors, (166258), 1795 states have call predecessors, (166258), 744 states have call successors, (166258) [2023-12-25 06:09:07,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4173 states to 4173 states and 169365 transitions. [2023-12-25 06:09:07,738 INFO L78 Accepts]: Start accepts. Automaton has 4173 states and 169365 transitions. Word has length 425 [2023-12-25 06:09:07,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:07,739 INFO L495 AbstractCegarLoop]: Abstraction has 4173 states and 169365 transitions. [2023-12-25 06:09:07,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 32 states have (on average 1.9375) internal successors, (62), 22 states have internal predecessors, (62), 11 states have call successors, (17), 2 states have call predecessors, (17), 16 states have return successors, (32), 21 states have call predecessors, (32), 11 states have call successors, (32) [2023-12-25 06:09:07,740 INFO L276 IsEmpty]: Start isEmpty. Operand 4173 states and 169365 transitions. [2023-12-25 06:09:07,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-25 06:09:07,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:07,752 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 20, 15, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:07,768 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 06:09:07,968 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 06:09:07,968 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:07,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:07,969 INFO L85 PathProgramCache]: Analyzing trace with hash 380492107, now seen corresponding path program 12 times [2023-12-25 06:09:07,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:07,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456709941] [2023-12-25 06:09:07,969 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:09:07,969 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 06:09:07,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:07,970 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 06:09:07,976 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 06:09:08,189 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-12-25 06:09:08,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:09:08,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-25 06:09:08,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:09:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2873 backedges. 181 proven. 755 refuted. 0 times theorem prover too weak. 1937 trivial. 0 not checked. [2023-12-25 06:09:08,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2873 backedges. 186 proven. 808 refuted. 0 times theorem prover too weak. 1879 trivial. 0 not checked. [2023-12-25 06:09:09,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:09,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456709941] [2023-12-25 06:09:09,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456709941] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:09,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:09,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 15 [2023-12-25 06:09:09,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747491383] [2023-12-25 06:09:09,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:09,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-25 06:09:09,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:09,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-25 06:09:09,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-25 06:09:09,208 INFO L87 Difference]: Start difference. First operand 4173 states and 169365 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 10 states have call successors, (17), 1 states have call predecessors, (17), 6 states have return successors, (22), 7 states have call predecessors, (22), 10 states have call successors, (22)