/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/Fibonacci03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 06:05:26,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 06:05:26,428 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 06:05:26,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 06:05:26,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 06:05:26,451 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 06:05:26,451 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 06:05:26,452 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 06:05:26,452 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 06:05:26,456 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 06:05:26,456 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 06:05:26,456 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 06:05:26,457 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 06:05:26,459 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 06:05:26,459 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 06:05:26,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 06:05:26,460 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 06:05:26,460 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 06:05:26,460 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 06:05:26,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 06:05:26,461 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 06:05:26,461 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 06:05:26,461 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 06:05:26,461 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 06:05:26,462 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 06:05:26,462 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 06:05:26,462 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 06:05:26,462 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 06:05:26,463 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 06:05:26,463 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 06:05:26,464 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 06:05:26,464 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 06:05:26,464 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 06:05:26,465 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 06:05:26,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:05:26,465 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 06:05:26,465 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 06:05:26,465 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 06:05:26,465 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 06:05:26,466 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 06:05:26,466 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 06:05:26,466 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 06:05:26,466 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 06:05:26,466 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 06:05:26,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 06:05:26,467 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 06:05:26,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 06:05:26,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 06:05:26,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 06:05:26,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 06:05:26,698 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 06:05:26,699 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 06:05:26,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci03.c [2023-12-25 06:05:27,935 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 06:05:28,122 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 06:05:28,123 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci03.c [2023-12-25 06:05:28,130 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97170de1f/cbc5e8d5eec2455d9138f2dc424cf651/FLAG3e5e83dcc [2023-12-25 06:05:28,147 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97170de1f/cbc5e8d5eec2455d9138f2dc424cf651 [2023-12-25 06:05:28,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 06:05:28,150 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 06:05:28,153 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 06:05:28,154 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 06:05:28,158 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 06:05:28,159 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:05:28" (1/1) ... [2023-12-25 06:05:28,160 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a8845a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:28, skipping insertion in model container [2023-12-25 06:05:28,160 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:05:28" (1/1) ... [2023-12-25 06:05:28,183 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 06:05:28,316 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/Fibonacci03.c[788,801] [2023-12-25 06:05:28,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:05:28,338 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 06:05:28,350 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/Fibonacci03.c[788,801] [2023-12-25 06:05:28,351 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:05:28,361 INFO L206 MainTranslator]: Completed translation [2023-12-25 06:05:28,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:28 WrapperNode [2023-12-25 06:05:28,361 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 06:05:28,362 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 06:05:28,362 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 06:05:28,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 06:05:28,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:28" (1/1) ... [2023-12-25 06:05:28,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:28" (1/1) ... [2023-12-25 06:05:28,393 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2023-12-25 06:05:28,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 06:05:28,394 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 06:05:28,394 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 06:05:28,394 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 06:05:28,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:28" (1/1) ... [2023-12-25 06:05:28,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:28" (1/1) ... [2023-12-25 06:05:28,403 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:28" (1/1) ... [2023-12-25 06:05:28,412 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 06:05:28,412 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:28" (1/1) ... [2023-12-25 06:05:28,412 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:28" (1/1) ... [2023-12-25 06:05:28,417 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:28" (1/1) ... [2023-12-25 06:05:28,418 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:28" (1/1) ... [2023-12-25 06:05:28,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:28" (1/1) ... [2023-12-25 06:05:28,419 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:28" (1/1) ... [2023-12-25 06:05:28,421 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 06:05:28,422 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 06:05:28,422 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 06:05:28,422 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 06:05:28,422 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:28" (1/1) ... [2023-12-25 06:05:28,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:05:28,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 06:05:28,452 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 06:05:28,454 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 06:05:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2023-12-25 06:05:28,479 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2023-12-25 06:05:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 06:05:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 06:05:28,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 06:05:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 06:05:28,570 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 06:05:28,572 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 06:05:28,683 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 06:05:28,731 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 06:05:28,731 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 06:05:28,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:05:28 BoogieIcfgContainer [2023-12-25 06:05:28,732 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 06:05:28,733 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 06:05:28,733 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 06:05:28,736 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 06:05:28,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 06:05:28" (1/3) ... [2023-12-25 06:05:28,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c514cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:05:28, skipping insertion in model container [2023-12-25 06:05:28,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:05:28" (2/3) ... [2023-12-25 06:05:28,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c514cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:05:28, skipping insertion in model container [2023-12-25 06:05:28,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:05:28" (3/3) ... [2023-12-25 06:05:28,738 INFO L112 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2023-12-25 06:05:28,762 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 06:05:28,762 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 06:05:28,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 06:05:28,807 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;@17e8c9b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 06:05:28,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 06:05:28,810 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 06:05:28,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-25 06:05:28,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:28,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:28,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:28,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:28,821 INFO L85 PathProgramCache]: Analyzing trace with hash -956471007, now seen corresponding path program 1 times [2023-12-25 06:05:28,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:28,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527411313] [2023-12-25 06:05:28,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:28,833 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 06:05:28,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:28,836 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 06:05:28,840 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 06:05:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:28,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 06:05:28,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:29,011 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 06:05:29,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:05:29,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:29,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527411313] [2023-12-25 06:05:29,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527411313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:05:29,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:05:29,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 06:05:29,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451601743] [2023-12-25 06:05:29,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:05:29,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 06:05:29,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:29,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 06:05:29,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:05:29,045 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:05:29,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:29,171 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2023-12-25 06:05:29,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:05:29,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-12-25 06:05:29,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:29,179 INFO L225 Difference]: With dead ends: 27 [2023-12-25 06:05:29,180 INFO L226 Difference]: Without dead ends: 17 [2023-12-25 06:05:29,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-25 06:05:29,187 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:29,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 26 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:29,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-25 06:05:29,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-25 06:05:29,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-25 06:05:29,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2023-12-25 06:05:29,223 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2023-12-25 06:05:29,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:29,224 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2023-12-25 06:05:29,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:05:29,224 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2023-12-25 06:05:29,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-25 06:05:29,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:29,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:29,229 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 06:05:29,429 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 06:05:29,430 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:29,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:29,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1134094323, now seen corresponding path program 1 times [2023-12-25 06:05:29,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:29,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499819189] [2023-12-25 06:05:29,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:29,431 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 06:05:29,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:29,432 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 06:05:29,442 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 06:05:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:29,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:05:29,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:29,542 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 06:05:29,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:05:29,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:29,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499819189] [2023-12-25 06:05:29,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499819189] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:05:29,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:05:29,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 06:05:29,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265055504] [2023-12-25 06:05:29,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:05:29,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 06:05:29,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:29,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 06:05:29,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 06:05:29,546 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 7 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 06:05:29,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:29,623 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2023-12-25 06:05:29,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:05:29,624 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 7 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 06:05:29,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:29,624 INFO L225 Difference]: With dead ends: 23 [2023-12-25 06:05:29,625 INFO L226 Difference]: Without dead ends: 19 [2023-12-25 06:05:29,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-25 06:05:29,626 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:29,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 27 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:05:29,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-25 06:05:29,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2023-12-25 06:05:29,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-25 06:05:29,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2023-12-25 06:05:29,631 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2023-12-25 06:05:29,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:29,631 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2023-12-25 06:05:29,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 7 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 06:05:29,631 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2023-12-25 06:05:29,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-25 06:05:29,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:29,632 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:29,637 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 06:05:29,834 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 06:05:29,834 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:29,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:29,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1599638945, now seen corresponding path program 1 times [2023-12-25 06:05:29,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:29,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341497921] [2023-12-25 06:05:29,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:29,836 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 06:05:29,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:29,837 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 06:05:29,838 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 06:05:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:29,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:05:29,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:29,953 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 06:05:29,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:05:29,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:29,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341497921] [2023-12-25 06:05:29,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341497921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:05:29,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:05:29,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 06:05:29,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393031881] [2023-12-25 06:05:29,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:05:29,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 06:05:29,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:29,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 06:05:29,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-25 06:05:29,956 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 7 states, 5 states have (on average 2.8) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 06:05:30,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:30,027 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2023-12-25 06:05:30,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:05:30,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2023-12-25 06:05:30,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:30,029 INFO L225 Difference]: With dead ends: 33 [2023-12-25 06:05:30,029 INFO L226 Difference]: Without dead ends: 19 [2023-12-25 06:05:30,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-25 06:05:30,031 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:30,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 31 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:30,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-25 06:05:30,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-25 06:05:30,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 14 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-25 06:05:30,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-12-25 06:05:30,037 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 22 [2023-12-25 06:05:30,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:30,037 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-12-25 06:05:30,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 06:05:30,038 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-12-25 06:05:30,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-25 06:05:30,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:30,039 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:30,058 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 06:05:30,241 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 06:05:30,242 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:30,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:30,243 INFO L85 PathProgramCache]: Analyzing trace with hash 451429743, now seen corresponding path program 1 times [2023-12-25 06:05:30,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:30,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119071128] [2023-12-25 06:05:30,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:05:30,243 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 06:05:30,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:30,244 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 06:05:30,246 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 06:05:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:30,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:05:30,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 06:05:30,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:30,551 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-25 06:05:30,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:30,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119071128] [2023-12-25 06:05:30,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119071128] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:30,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:30,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-12-25 06:05:30,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036048734] [2023-12-25 06:05:30,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:30,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 06:05:30,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:30,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 06:05:30,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-25 06:05:30,556 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-25 06:05:30,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:30,764 INFO L93 Difference]: Finished difference Result 51 states and 81 transitions. [2023-12-25 06:05:30,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 06:05:30,765 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) Word has length 23 [2023-12-25 06:05:30,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:30,767 INFO L225 Difference]: With dead ends: 51 [2023-12-25 06:05:30,767 INFO L226 Difference]: Without dead ends: 31 [2023-12-25 06:05:30,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-12-25 06:05:30,769 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:30,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 37 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:30,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-25 06:05:30,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-12-25 06:05:30,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-25 06:05:30,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 47 transitions. [2023-12-25 06:05:30,778 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 47 transitions. Word has length 23 [2023-12-25 06:05:30,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:30,779 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 47 transitions. [2023-12-25 06:05:30,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-25 06:05:30,779 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 47 transitions. [2023-12-25 06:05:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-25 06:05:30,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:30,781 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:30,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:30,983 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 06:05:30,984 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:30,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:30,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1893444249, now seen corresponding path program 2 times [2023-12-25 06:05:30,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:30,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847042036] [2023-12-25 06:05:30,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:05:30,985 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 06:05:30,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:30,987 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 06:05:30,988 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 06:05:31,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:05:31,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:31,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-25 06:05:31,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-25 06:05:31,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:31,503 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 12 proven. 57 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 06:05:31,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:31,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847042036] [2023-12-25 06:05:31,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847042036] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:31,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:31,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 15 [2023-12-25 06:05:31,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043264185] [2023-12-25 06:05:31,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:31,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-25 06:05:31,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:31,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-25 06:05:31,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-12-25 06:05:31,505 INFO L87 Difference]: Start difference. First operand 31 states and 47 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 10 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (12), 6 states have call predecessors, (12), 10 states have call successors, (12) [2023-12-25 06:05:31,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:31,783 INFO L93 Difference]: Finished difference Result 96 states and 195 transitions. [2023-12-25 06:05:31,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 06:05:31,784 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 10 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (12), 6 states have call predecessors, (12), 10 states have call successors, (12) Word has length 47 [2023-12-25 06:05:31,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:31,786 INFO L225 Difference]: With dead ends: 96 [2023-12-25 06:05:31,787 INFO L226 Difference]: Without dead ends: 47 [2023-12-25 06:05:31,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2023-12-25 06:05:31,790 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 39 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:31,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 81 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:05:31,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-25 06:05:31,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2023-12-25 06:05:31,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 8 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (25), 11 states have call predecessors, (25), 8 states have call successors, (25) [2023-12-25 06:05:31,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 63 transitions. [2023-12-25 06:05:31,801 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 63 transitions. Word has length 47 [2023-12-25 06:05:31,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:31,801 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 63 transitions. [2023-12-25 06:05:31,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 10 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (12), 6 states have call predecessors, (12), 10 states have call successors, (12) [2023-12-25 06:05:31,802 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 63 transitions. [2023-12-25 06:05:31,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-25 06:05:31,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:31,804 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 9, 6, 6, 6, 6, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:31,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:32,007 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 06:05:32,008 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:32,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:32,008 INFO L85 PathProgramCache]: Analyzing trace with hash 680866727, now seen corresponding path program 3 times [2023-12-25 06:05:32,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:32,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572505138] [2023-12-25 06:05:32,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:05:32,009 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 06:05:32,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:32,011 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 06:05:32,014 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 06:05:32,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-25 06:05:32,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:32,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 06:05:32,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 65 proven. 26 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2023-12-25 06:05:32,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:32,362 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 65 proven. 27 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-12-25 06:05:32,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:32,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572505138] [2023-12-25 06:05:32,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572505138] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:32,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:32,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-12-25 06:05:32,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850245485] [2023-12-25 06:05:32,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:32,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 06:05:32,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:32,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 06:05:32,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-25 06:05:32,366 INFO L87 Difference]: Start difference. First operand 44 states and 63 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 4 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-25 06:05:32,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:32,504 INFO L93 Difference]: Finished difference Result 63 states and 102 transitions. [2023-12-25 06:05:32,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 06:05:32,505 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 4 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) Word has length 85 [2023-12-25 06:05:32,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:32,506 INFO L225 Difference]: With dead ends: 63 [2023-12-25 06:05:32,506 INFO L226 Difference]: Without dead ends: 57 [2023-12-25 06:05:32,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:05:32,508 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 21 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:32,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 38 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:05:32,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-25 06:05:32,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 44. [2023-12-25 06:05:32,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 8 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (25), 11 states have call predecessors, (25), 8 states have call successors, (25) [2023-12-25 06:05:32,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 63 transitions. [2023-12-25 06:05:32,518 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 63 transitions. Word has length 85 [2023-12-25 06:05:32,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:32,519 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 63 transitions. [2023-12-25 06:05:32,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 4 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-25 06:05:32,519 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 63 transitions. [2023-12-25 06:05:32,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-12-25 06:05:32,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:32,523 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 35, 21, 21, 21, 21, 21, 21, 14, 8, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:32,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-25 06:05:32,726 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 06:05:32,727 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:32,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:32,727 INFO L85 PathProgramCache]: Analyzing trace with hash -100288003, now seen corresponding path program 4 times [2023-12-25 06:05:32,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:32,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454744272] [2023-12-25 06:05:32,728 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:05:32,728 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 06:05:32,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:32,729 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 06:05:32,731 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 06:05:32,851 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:05:32,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:32,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-25 06:05:32,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:33,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4837 backedges. 2606 proven. 424 refuted. 0 times theorem prover too weak. 1807 trivial. 0 not checked. [2023-12-25 06:05:33,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4837 backedges. 328 proven. 1212 refuted. 0 times theorem prover too weak. 3297 trivial. 0 not checked. [2023-12-25 06:05:34,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:34,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454744272] [2023-12-25 06:05:34,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454744272] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:34,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:34,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 21 [2023-12-25 06:05:34,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704987528] [2023-12-25 06:05:34,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:34,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-25 06:05:34,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:34,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-25 06:05:34,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:05:34,038 INFO L87 Difference]: Start difference. First operand 44 states and 63 transitions. Second operand has 21 states, 18 states have (on average 3.388888888888889) internal successors, (61), 19 states have internal predecessors, (61), 18 states have call successors, (23), 2 states have call predecessors, (23), 9 states have return successors, (30), 10 states have call predecessors, (30), 18 states have call successors, (30) [2023-12-25 06:05:34,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:34,418 INFO L93 Difference]: Finished difference Result 106 states and 188 transitions. [2023-12-25 06:05:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 06:05:34,420 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 3.388888888888889) internal successors, (61), 19 states have internal predecessors, (61), 18 states have call successors, (23), 2 states have call predecessors, (23), 9 states have return successors, (30), 10 states have call predecessors, (30), 18 states have call successors, (30) Word has length 276 [2023-12-25 06:05:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:34,422 INFO L225 Difference]: With dead ends: 106 [2023-12-25 06:05:34,422 INFO L226 Difference]: Without dead ends: 65 [2023-12-25 06:05:34,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=637, Unknown=0, NotChecked=0, Total=870 [2023-12-25 06:05:34,423 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 41 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:34,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 117 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:05:34,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-25 06:05:34,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2023-12-25 06:05:34,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 35 states have internal predecessors, (39), 10 states have call successors, (10), 6 states have call predecessors, (10), 8 states have return successors, (28), 13 states have call predecessors, (28), 10 states have call successors, (28) [2023-12-25 06:05:34,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 77 transitions. [2023-12-25 06:05:34,433 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 77 transitions. Word has length 276 [2023-12-25 06:05:34,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:34,434 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 77 transitions. [2023-12-25 06:05:34,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 3.388888888888889) internal successors, (61), 19 states have internal predecessors, (61), 18 states have call successors, (23), 2 states have call predecessors, (23), 9 states have return successors, (30), 10 states have call predecessors, (30), 18 states have call successors, (30) [2023-12-25 06:05:34,434 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 77 transitions. [2023-12-25 06:05:34,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-25 06:05:34,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:34,437 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 25, 15, 15, 15, 15, 15, 15, 10, 6, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:34,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:34,644 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 06:05:34,644 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:34,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:34,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2131778819, now seen corresponding path program 5 times [2023-12-25 06:05:34,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:34,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135745025] [2023-12-25 06:05:34,645 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:05:34,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:05:34,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:34,647 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 06:05:34,648 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 06:05:34,838 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-12-25 06:05:34,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:34,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 06:05:34,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2475 backedges. 568 proven. 497 refuted. 0 times theorem prover too weak. 1410 trivial. 0 not checked. [2023-12-25 06:05:35,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:38,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2475 backedges. 573 proven. 546 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2023-12-25 06:05:38,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:38,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135745025] [2023-12-25 06:05:38,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135745025] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:38,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:38,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 21 [2023-12-25 06:05:38,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922866883] [2023-12-25 06:05:38,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:38,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-25 06:05:38,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:38,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-25 06:05:38,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:05:38,265 INFO L87 Difference]: Start difference. First operand 55 states and 77 transitions. Second operand has 21 states, 17 states have (on average 2.823529411764706) internal successors, (48), 19 states have internal predecessors, (48), 13 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (24), 13 states have call predecessors, (24), 13 states have call successors, (24) [2023-12-25 06:05:39,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:39,616 INFO L93 Difference]: Finished difference Result 156 states and 345 transitions. [2023-12-25 06:05:39,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-25 06:05:39,616 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.823529411764706) internal successors, (48), 19 states have internal predecessors, (48), 13 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (24), 13 states have call predecessors, (24), 13 states have call successors, (24) Word has length 200 [2023-12-25 06:05:39,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:39,618 INFO L225 Difference]: With dead ends: 156 [2023-12-25 06:05:39,618 INFO L226 Difference]: Without dead ends: 97 [2023-12-25 06:05:39,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=299, Invalid=757, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 06:05:39,620 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 95 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:39,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 119 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:05:39,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-25 06:05:39,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 84. [2023-12-25 06:05:39,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 53 states have internal predecessors, (59), 16 states have call successors, (16), 10 states have call predecessors, (16), 12 states have return successors, (54), 20 states have call predecessors, (54), 16 states have call successors, (54) [2023-12-25 06:05:39,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 129 transitions. [2023-12-25 06:05:39,631 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 129 transitions. Word has length 200 [2023-12-25 06:05:39,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:39,632 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 129 transitions. [2023-12-25 06:05:39,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.823529411764706) internal successors, (48), 19 states have internal predecessors, (48), 13 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (24), 13 states have call predecessors, (24), 13 states have call successors, (24) [2023-12-25 06:05:39,632 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 129 transitions. [2023-12-25 06:05:39,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-25 06:05:39,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:39,634 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:39,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:39,839 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 06:05:39,839 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:39,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:39,840 INFO L85 PathProgramCache]: Analyzing trace with hash -688812437, now seen corresponding path program 6 times [2023-12-25 06:05:39,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:39,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554592257] [2023-12-25 06:05:39,840 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:05:39,840 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 06:05:39,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:39,841 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 06:05:39,843 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 06:05:39,964 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-12-25 06:05:39,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:39,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 06:05:39,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:40,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4378 backedges. 307 proven. 760 refuted. 0 times theorem prover too weak. 3311 trivial. 0 not checked. [2023-12-25 06:05:40,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:40,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4378 backedges. 307 proven. 800 refuted. 0 times theorem prover too weak. 3271 trivial. 0 not checked. [2023-12-25 06:05:40,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:40,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554592257] [2023-12-25 06:05:40,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554592257] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:40,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:40,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 19 [2023-12-25 06:05:40,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824470620] [2023-12-25 06:05:40,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:40,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-25 06:05:40,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:40,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-25 06:05:40,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2023-12-25 06:05:40,897 INFO L87 Difference]: Start difference. First operand 84 states and 129 transitions. Second operand has 19 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 19 states have internal predecessors, (50), 13 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) [2023-12-25 06:05:41,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:41,330 INFO L93 Difference]: Finished difference Result 244 states and 582 transitions. [2023-12-25 06:05:41,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 06:05:41,331 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 19 states have internal predecessors, (50), 13 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) Word has length 263 [2023-12-25 06:05:41,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:41,335 INFO L225 Difference]: With dead ends: 244 [2023-12-25 06:05:41,336 INFO L226 Difference]: Without dead ends: 157 [2023-12-25 06:05:41,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2023-12-25 06:05:41,340 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 65 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:41,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 157 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:05:41,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-25 06:05:41,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 114. [2023-12-25 06:05:41,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 73 states have (on average 1.082191780821918) internal successors, (79), 71 states have internal predecessors, (79), 22 states have call successors, (22), 12 states have call predecessors, (22), 18 states have return successors, (130), 30 states have call predecessors, (130), 22 states have call successors, (130) [2023-12-25 06:05:41,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 231 transitions. [2023-12-25 06:05:41,382 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 231 transitions. Word has length 263 [2023-12-25 06:05:41,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:41,383 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 231 transitions. [2023-12-25 06:05:41,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 19 states have internal predecessors, (50), 13 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) [2023-12-25 06:05:41,383 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 231 transitions. [2023-12-25 06:05:41,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 970 [2023-12-25 06:05:41,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:41,408 INFO L195 NwaCegarLoop]: trace histogram [153, 153, 123, 76, 76, 76, 76, 76, 76, 47, 30, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:41,440 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 06:05:41,612 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 06:05:41,612 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:41,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:41,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1406012677, now seen corresponding path program 7 times [2023-12-25 06:05:41,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:41,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400461953] [2023-12-25 06:05:41,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:05:41,614 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 06:05:41,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:41,644 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 06:05:41,671 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 06:05:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:05:42,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-25 06:05:42,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 62565 backedges. 3243 proven. 8282 refuted. 0 times theorem prover too weak. 51040 trivial. 0 not checked. [2023-12-25 06:05:42,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 62565 backedges. 3287 proven. 8236 refuted. 0 times theorem prover too weak. 51042 trivial. 0 not checked. [2023-12-25 06:05:46,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:46,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400461953] [2023-12-25 06:05:46,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400461953] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:46,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:46,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 33] total 37 [2023-12-25 06:05:46,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832591774] [2023-12-25 06:05:46,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:46,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-25 06:05:46,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:46,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-25 06:05:46,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1084, Unknown=0, NotChecked=0, Total=1332 [2023-12-25 06:05:46,072 INFO L87 Difference]: Start difference. First operand 114 states and 231 transitions. Second operand has 37 states, 34 states have (on average 2.823529411764706) internal successors, (96), 35 states have internal predecessors, (96), 33 states have call successors, (36), 1 states have call predecessors, (36), 17 states have return successors, (49), 18 states have call predecessors, (49), 33 states have call successors, (49) [2023-12-25 06:05:47,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:47,111 INFO L93 Difference]: Finished difference Result 275 states and 781 transitions. [2023-12-25 06:05:47,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-25 06:05:47,112 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 2.823529411764706) internal successors, (96), 35 states have internal predecessors, (96), 33 states have call successors, (36), 1 states have call predecessors, (36), 17 states have return successors, (49), 18 states have call predecessors, (49), 33 states have call successors, (49) Word has length 969 [2023-12-25 06:05:47,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:47,115 INFO L225 Difference]: With dead ends: 275 [2023-12-25 06:05:47,115 INFO L226 Difference]: Without dead ends: 152 [2023-12-25 06:05:47,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1961 GetRequests, 1901 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=973, Invalid=2809, Unknown=0, NotChecked=0, Total=3782 [2023-12-25 06:05:47,121 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 205 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:47,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 260 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:05:47,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-25 06:05:47,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 106. [2023-12-25 06:05:47,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 70 states have (on average 1.1) internal successors, (77), 69 states have internal predecessors, (77), 22 states have call successors, (22), 14 states have call predecessors, (22), 13 states have return successors, (71), 22 states have call predecessors, (71), 22 states have call successors, (71) [2023-12-25 06:05:47,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 170 transitions. [2023-12-25 06:05:47,150 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 170 transitions. Word has length 969 [2023-12-25 06:05:47,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:47,153 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 170 transitions. [2023-12-25 06:05:47,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 2.823529411764706) internal successors, (96), 35 states have internal predecessors, (96), 33 states have call successors, (36), 1 states have call predecessors, (36), 17 states have return successors, (49), 18 states have call predecessors, (49), 33 states have call successors, (49) [2023-12-25 06:05:47,154 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 170 transitions. [2023-12-25 06:05:47,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2023-12-25 06:05:47,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:47,157 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:47,171 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 06:05:47,369 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 06:05:47,369 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:47,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:47,370 INFO L85 PathProgramCache]: Analyzing trace with hash 608297609, now seen corresponding path program 8 times [2023-12-25 06:05:47,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:47,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598324362] [2023-12-25 06:05:47,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:05:47,371 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 06:05:47,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:47,377 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 06:05:47,400 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 06:05:48,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:05:48,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:05:48,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 220 conjunts are in the unsatisfiable core [2023-12-25 06:05:48,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:05:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 31665 backedges. 0 proven. 10071 refuted. 0 times theorem prover too weak. 21594 trivial. 0 not checked. [2023-12-25 06:05:49,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:05:56,201 INFO L134 CoverageAnalysis]: Checked inductivity of 31665 backedges. 632 proven. 9827 refuted. 0 times theorem prover too weak. 21206 trivial. 0 not checked. [2023-12-25 06:05:56,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:05:56,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598324362] [2023-12-25 06:05:56,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598324362] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:05:56,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:05:56,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 45] total 59 [2023-12-25 06:05:56,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335864522] [2023-12-25 06:05:56,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:05:56,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-25 06:05:56,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:05:56,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-25 06:05:56,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=3141, Unknown=0, NotChecked=0, Total=3422 [2023-12-25 06:05:56,204 INFO L87 Difference]: Start difference. First operand 106 states and 170 transitions. Second operand has 59 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 21 states have internal predecessors, (52), 15 states have call successors, (16), 1 states have call predecessors, (16), 17 states have return successors, (38), 38 states have call predecessors, (38), 15 states have call successors, (38) [2023-12-25 06:05:58,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:05:58,388 INFO L93 Difference]: Finished difference Result 146 states and 276 transitions. [2023-12-25 06:05:58,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-25 06:05:58,390 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 21 states have internal predecessors, (52), 15 states have call successors, (16), 1 states have call predecessors, (16), 17 states have return successors, (38), 38 states have call predecessors, (38), 15 states have call successors, (38) Word has length 692 [2023-12-25 06:05:58,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:05:58,395 INFO L225 Difference]: With dead ends: 146 [2023-12-25 06:05:58,395 INFO L226 Difference]: Without dead ends: 140 [2023-12-25 06:05:58,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1394 GetRequests, 1317 SyntacticMatches, 8 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=409, Invalid=4561, Unknown=0, NotChecked=0, Total=4970 [2023-12-25 06:05:58,398 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:05:58,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1232 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 06:05:58,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-25 06:05:58,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 125. [2023-12-25 06:05:58,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 80 states have (on average 1.0875) internal successors, (87), 79 states have internal predecessors, (87), 26 states have call successors, (26), 14 states have call predecessors, (26), 18 states have return successors, (134), 31 states have call predecessors, (134), 26 states have call successors, (134) [2023-12-25 06:05:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 247 transitions. [2023-12-25 06:05:58,418 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 247 transitions. Word has length 692 [2023-12-25 06:05:58,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:05:58,420 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 247 transitions. [2023-12-25 06:05:58,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 21 states have internal predecessors, (52), 15 states have call successors, (16), 1 states have call predecessors, (16), 17 states have return successors, (38), 38 states have call predecessors, (38), 15 states have call successors, (38) [2023-12-25 06:05:58,420 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 247 transitions. [2023-12-25 06:05:58,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1387 [2023-12-25 06:05:58,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:05:58,434 INFO L195 NwaCegarLoop]: trace histogram [219, 219, 177, 109, 109, 109, 109, 109, 109, 68, 42, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:05:58,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-25 06:05:58,640 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 06:05:58,640 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:05:58,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:05:58,641 INFO L85 PathProgramCache]: Analyzing trace with hash 139861921, now seen corresponding path program 9 times [2023-12-25 06:05:58,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:05:58,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545032502] [2023-12-25 06:05:58,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:05:58,643 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 06:05:58,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:05:58,645 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 06:05:58,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-25 06:06:01,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 107 check-sat command(s) [2023-12-25 06:06:01,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:01,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-25 06:06:01,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 128718 backedges. 5885 proven. 9393 refuted. 0 times theorem prover too weak. 113440 trivial. 0 not checked. [2023-12-25 06:06:01,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 128718 backedges. 5902 proven. 9622 refuted. 0 times theorem prover too weak. 113194 trivial. 0 not checked. [2023-12-25 06:06:05,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:05,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545032502] [2023-12-25 06:06:05,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545032502] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:06:05,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:05,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 23] total 25 [2023-12-25 06:06:05,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440747961] [2023-12-25 06:06:05,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:05,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-25 06:06:05,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:05,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-25 06:06:05,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2023-12-25 06:06:05,638 INFO L87 Difference]: Start difference. First operand 125 states and 247 transitions. Second operand has 25 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 22 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (45), 18 states have call predecessors, (45), 22 states have call successors, (45) [2023-12-25 06:06:06,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:06,247 INFO L93 Difference]: Finished difference Result 307 states and 826 transitions. [2023-12-25 06:06:06,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-25 06:06:06,257 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 22 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (45), 18 states have call predecessors, (45), 22 states have call successors, (45) Word has length 1386 [2023-12-25 06:06:06,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:06,261 INFO L225 Difference]: With dead ends: 307 [2023-12-25 06:06:06,262 INFO L226 Difference]: Without dead ends: 185 [2023-12-25 06:06:06,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2783 GetRequests, 2747 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 06:06:06,264 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 233 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:06,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 263 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:06:06,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-12-25 06:06:06,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 137. [2023-12-25 06:06:06,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 87 states have (on average 1.0804597701149425) internal successors, (94), 86 states have internal predecessors, (94), 29 states have call successors, (29), 15 states have call predecessors, (29), 20 states have return successors, (166), 35 states have call predecessors, (166), 29 states have call successors, (166) [2023-12-25 06:06:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 289 transitions. [2023-12-25 06:06:06,294 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 289 transitions. Word has length 1386 [2023-12-25 06:06:06,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:06,295 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 289 transitions. [2023-12-25 06:06:06,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 22 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (45), 18 states have call predecessors, (45), 22 states have call successors, (45) [2023-12-25 06:06:06,295 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 289 transitions. [2023-12-25 06:06:06,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1816 [2023-12-25 06:06:06,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:06,332 INFO L195 NwaCegarLoop]: trace histogram [287, 287, 232, 143, 143, 143, 143, 143, 143, 89, 55, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:06,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-25 06:06:06,532 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 06:06:06,533 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:06,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:06,533 INFO L85 PathProgramCache]: Analyzing trace with hash -346506565, now seen corresponding path program 10 times [2023-12-25 06:06:06,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:06,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108897429] [2023-12-25 06:06:06,534 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:06:06,534 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 06:06:06,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:06,535 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 06:06:06,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-25 06:06:12,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:06:12,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:12,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 2545 conjuncts, 576 conjunts are in the unsatisfiable core [2023-12-25 06:06:12,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 221419 backedges. 0 proven. 70422 refuted. 0 times theorem prover too weak. 150997 trivial. 0 not checked. [2023-12-25 06:06:13,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:06:31,871 INFO L134 CoverageAnalysis]: Checked inductivity of 221419 backedges. 6901 proven. 64600 refuted. 0 times theorem prover too weak. 149918 trivial. 0 not checked. [2023-12-25 06:06:31,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:06:31,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108897429] [2023-12-25 06:06:31,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108897429] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:06:31,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:06:31,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 57] total 73 [2023-12-25 06:06:31,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784527197] [2023-12-25 06:06:31,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:06:31,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-25 06:06:31,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:06:31,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-25 06:06:31,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=4654, Unknown=0, NotChecked=0, Total=5256 [2023-12-25 06:06:31,876 INFO L87 Difference]: Start difference. First operand 137 states and 289 transitions. Second operand has 73 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 25 states have internal predecessors, (62), 19 states have call successors, (20), 1 states have call predecessors, (20), 21 states have return successors, (48), 48 states have call predecessors, (48), 19 states have call successors, (48) [2023-12-25 06:06:36,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:06:36,303 INFO L93 Difference]: Finished difference Result 226 states and 615 transitions. [2023-12-25 06:06:36,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-25 06:06:36,303 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 25 states have internal predecessors, (62), 19 states have call successors, (20), 1 states have call predecessors, (20), 21 states have return successors, (48), 48 states have call predecessors, (48), 19 states have call successors, (48) Word has length 1815 [2023-12-25 06:06:36,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:06:36,310 INFO L225 Difference]: With dead ends: 226 [2023-12-25 06:06:36,310 INFO L226 Difference]: Without dead ends: 220 [2023-12-25 06:06:36,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3651 GetRequests, 3547 SyntacticMatches, 10 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1143, Invalid=7977, Unknown=0, NotChecked=0, Total=9120 [2023-12-25 06:06:36,313 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:06:36,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1484 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 06:06:36,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-25 06:06:36,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 168. [2023-12-25 06:06:36,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 103 states have (on average 1.0679611650485437) internal successors, (110), 102 states have internal predecessors, (110), 36 states have call successors, (36), 15 states have call predecessors, (36), 28 states have return successors, (326), 50 states have call predecessors, (326), 36 states have call successors, (326) [2023-12-25 06:06:36,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 472 transitions. [2023-12-25 06:06:36,338 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 472 transitions. Word has length 1815 [2023-12-25 06:06:36,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:06:36,339 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 472 transitions. [2023-12-25 06:06:36,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 25 states have internal predecessors, (62), 19 states have call successors, (20), 1 states have call predecessors, (20), 21 states have return successors, (48), 48 states have call predecessors, (48), 19 states have call successors, (48) [2023-12-25 06:06:36,339 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 472 transitions. [2023-12-25 06:06:36,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3380 [2023-12-25 06:06:36,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:06:36,392 INFO L195 NwaCegarLoop]: trace histogram [535, 535, 432, 267, 267, 267, 267, 267, 267, 165, 103, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:06:36,415 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 06:06:36,608 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 06:06:36,608 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:06:36,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:06:36,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1530303771, now seen corresponding path program 11 times [2023-12-25 06:06:36,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:06:36,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788209205] [2023-12-25 06:06:36,611 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:06:36,611 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 06:06:36,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:06:36,612 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 06:06:36,613 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 06:06:48,836 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 287 check-sat command(s) [2023-12-25 06:06:48,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:06:48,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-25 06:06:48,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:06:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 771009 backedges. 31556 proven. 23434 refuted. 0 times theorem prover too weak. 716019 trivial. 0 not checked. [2023-12-25 06:06:49,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 771009 backedges. 31181 proven. 23465 refuted. 0 times theorem prover too weak. 716363 trivial. 0 not checked. [2023-12-25 06:07:02,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:02,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788209205] [2023-12-25 06:07:02,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788209205] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:02,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:02,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 50] total 55 [2023-12-25 06:07:02,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161223472] [2023-12-25 06:07:02,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:02,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-25 06:07:02,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:02,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-25 06:07:02,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=2502, Unknown=0, NotChecked=0, Total=2970 [2023-12-25 06:07:02,670 INFO L87 Difference]: Start difference. First operand 168 states and 472 transitions. Second operand has 55 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 53 states have internal predecessors, (119), 42 states have call successors, (45), 1 states have call predecessors, (45), 22 states have return successors, (62), 23 states have call predecessors, (62), 42 states have call successors, (62) [2023-12-25 06:07:04,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:04,603 INFO L93 Difference]: Finished difference Result 343 states and 1217 transitions. [2023-12-25 06:07:04,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-25 06:07:04,604 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 53 states have internal predecessors, (119), 42 states have call successors, (45), 1 states have call predecessors, (45), 22 states have return successors, (62), 23 states have call predecessors, (62), 42 states have call successors, (62) Word has length 3379 [2023-12-25 06:07:04,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:04,608 INFO L225 Difference]: With dead ends: 343 [2023-12-25 06:07:04,608 INFO L226 Difference]: Without dead ends: 176 [2023-12-25 06:07:04,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6776 GetRequests, 6703 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1338, Invalid=4212, Unknown=0, NotChecked=0, Total=5550 [2023-12-25 06:07:04,613 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 306 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:04,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 362 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-25 06:07:04,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-25 06:07:04,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 139. [2023-12-25 06:07:04,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 90 states have (on average 1.011111111111111) internal successors, (91), 89 states have internal predecessors, (91), 31 states have call successors, (31), 18 states have call predecessors, (31), 17 states have return successors, (140), 31 states have call predecessors, (140), 31 states have call successors, (140) [2023-12-25 06:07:04,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 262 transitions. [2023-12-25 06:07:04,630 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 262 transitions. Word has length 3379 [2023-12-25 06:07:04,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:04,632 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 262 transitions. [2023-12-25 06:07:04,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 53 states have internal predecessors, (119), 42 states have call successors, (45), 1 states have call predecessors, (45), 22 states have return successors, (62), 23 states have call predecessors, (62), 42 states have call successors, (62) [2023-12-25 06:07:04,632 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 262 transitions. [2023-12-25 06:07:04,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2245 [2023-12-25 06:07:04,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:04,657 INFO L195 NwaCegarLoop]: trace histogram [355, 355, 287, 177, 177, 177, 177, 177, 177, 110, 68, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:04,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-25 06:07:04,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:07:04,879 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:04,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:04,879 INFO L85 PathProgramCache]: Analyzing trace with hash -729329607, now seen corresponding path program 12 times [2023-12-25 06:07:04,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:04,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172141072] [2023-12-25 06:07:04,881 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:07:04,881 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 06:07:04,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:04,897 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:07:04,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-25 06:07:08,958 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 125 check-sat command(s) [2023-12-25 06:07:08,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:07:08,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-25 06:07:09,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 339109 backedges. 13254 proven. 14461 refuted. 0 times theorem prover too weak. 311394 trivial. 0 not checked. [2023-12-25 06:07:10,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 339109 backedges. 13244 proven. 13902 refuted. 0 times theorem prover too weak. 311963 trivial. 0 not checked. [2023-12-25 06:07:19,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:19,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172141072] [2023-12-25 06:07:19,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172141072] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:19,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:19,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 31] total 37 [2023-12-25 06:07:19,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726675553] [2023-12-25 06:07:19,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:19,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-25 06:07:19,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:19,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-25 06:07:19,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1139, Unknown=0, NotChecked=0, Total=1332 [2023-12-25 06:07:19,977 INFO L87 Difference]: Start difference. First operand 139 states and 262 transitions. Second operand has 37 states, 32 states have (on average 2.75) internal successors, (88), 35 states have internal predecessors, (88), 27 states have call successors, (37), 1 states have call predecessors, (37), 16 states have return successors, (51), 25 states have call predecessors, (51), 27 states have call successors, (51) [2023-12-25 06:07:22,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:22,639 INFO L93 Difference]: Finished difference Result 321 states and 779 transitions. [2023-12-25 06:07:22,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-25 06:07:22,640 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 32 states have (on average 2.75) internal successors, (88), 35 states have internal predecessors, (88), 27 states have call successors, (37), 1 states have call predecessors, (37), 16 states have return successors, (51), 25 states have call predecessors, (51), 27 states have call successors, (51) Word has length 2244 [2023-12-25 06:07:22,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:22,644 INFO L225 Difference]: With dead ends: 321 [2023-12-25 06:07:22,644 INFO L226 Difference]: Without dead ends: 185 [2023-12-25 06:07:22,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4500 GetRequests, 4441 SyntacticMatches, 10 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=519, Invalid=2031, Unknown=0, NotChecked=0, Total=2550 [2023-12-25 06:07:22,647 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 224 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:22,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 385 Invalid, 1624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-25 06:07:22,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-12-25 06:07:22,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 147. [2023-12-25 06:07:22,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 95 states have (on average 1.0105263157894737) internal successors, (96), 94 states have internal predecessors, (96), 33 states have call successors, (33), 19 states have call predecessors, (33), 18 states have return successors, (152), 33 states have call predecessors, (152), 33 states have call successors, (152) [2023-12-25 06:07:22,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 281 transitions. [2023-12-25 06:07:22,670 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 281 transitions. Word has length 2244 [2023-12-25 06:07:22,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:22,671 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 281 transitions. [2023-12-25 06:07:22,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 32 states have (on average 2.75) internal successors, (88), 35 states have internal predecessors, (88), 27 states have call successors, (37), 1 states have call predecessors, (37), 16 states have return successors, (51), 25 states have call predecessors, (51), 27 states have call successors, (51) [2023-12-25 06:07:22,671 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 281 transitions. [2023-12-25 06:07:22,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5879 [2023-12-25 06:07:22,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:22,874 INFO L195 NwaCegarLoop]: trace histogram [931, 931, 753, 465, 465, 465, 465, 465, 465, 288, 178, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:22,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-25 06:07:23,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:07:23,075 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:23,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:23,076 INFO L85 PathProgramCache]: Analyzing trace with hash -812830815, now seen corresponding path program 13 times [2023-12-25 06:07:23,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:23,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655578408] [2023-12-25 06:07:23,079 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:07:23,079 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 06:07:23,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:23,080 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:07:23,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-25 06:07:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:07:39,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 8218 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-25 06:07:39,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:07:40,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2338428 backedges. 34995 proven. 79427 refuted. 0 times theorem prover too weak. 2224006 trivial. 0 not checked. [2023-12-25 06:07:40,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:07:55,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2338428 backedges. 35063 proven. 78020 refuted. 0 times theorem prover too weak. 2225345 trivial. 0 not checked. [2023-12-25 06:07:55,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:07:55,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655578408] [2023-12-25 06:07:55,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655578408] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:07:55,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:07:55,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 49] total 53 [2023-12-25 06:07:55,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286846666] [2023-12-25 06:07:55,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:07:55,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-25 06:07:55,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:07:55,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-25 06:07:55,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=2292, Unknown=0, NotChecked=0, Total=2756 [2023-12-25 06:07:55,677 INFO L87 Difference]: Start difference. First operand 147 states and 281 transitions. Second operand has 53 states, 50 states have (on average 2.72) internal successors, (136), 51 states have internal predecessors, (136), 49 states have call successors, (52), 1 states have call predecessors, (52), 25 states have return successors, (73), 26 states have call predecessors, (73), 49 states have call successors, (73) [2023-12-25 06:07:57,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:07:57,704 INFO L93 Difference]: Finished difference Result 337 states and 836 transitions. [2023-12-25 06:07:57,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-25 06:07:57,705 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 50 states have (on average 2.72) internal successors, (136), 51 states have internal predecessors, (136), 49 states have call successors, (52), 1 states have call predecessors, (52), 25 states have return successors, (73), 26 states have call predecessors, (73), 49 states have call successors, (73) Word has length 5878 [2023-12-25 06:07:57,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:07:57,710 INFO L225 Difference]: With dead ends: 337 [2023-12-25 06:07:57,710 INFO L226 Difference]: Without dead ends: 193 [2023-12-25 06:07:57,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11795 GetRequests, 11703 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1676 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2225, Invalid=6517, Unknown=0, NotChecked=0, Total=8742 [2023-12-25 06:07:57,713 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 381 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:07:57,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 397 Invalid, 2076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 06:07:57,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-12-25 06:07:57,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 147. [2023-12-25 06:07:57,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 98 states have (on average 1.010204081632653) internal successors, (99), 97 states have internal predecessors, (99), 33 states have call successors, (33), 22 states have call predecessors, (33), 15 states have return successors, (119), 27 states have call predecessors, (119), 33 states have call successors, (119) [2023-12-25 06:07:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 251 transitions. [2023-12-25 06:07:57,731 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 251 transitions. Word has length 5878 [2023-12-25 06:07:57,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:07:57,733 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 251 transitions. [2023-12-25 06:07:57,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 50 states have (on average 2.72) internal successors, (136), 51 states have internal predecessors, (136), 49 states have call successors, (52), 1 states have call predecessors, (52), 25 states have return successors, (73), 26 states have call predecessors, (73), 49 states have call successors, (73) [2023-12-25 06:07:57,733 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 251 transitions. [2023-12-25 06:07:57,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4756 [2023-12-25 06:07:57,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:07:57,832 INFO L195 NwaCegarLoop]: trace histogram [753, 753, 609, 376, 376, 376, 376, 376, 376, 233, 144, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:07:57,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-25 06:07:58,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:07:58,052 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:07:58,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:07:58,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1690496739, now seen corresponding path program 14 times [2023-12-25 06:07:58,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:07:58,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281586099] [2023-12-25 06:07:58,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:07:58,056 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 06:07:58,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:07:58,057 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:07:58,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-25 06:08:32,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:08:32,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:08:32,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 6650 conjuncts, 1508 conjunts are in the unsatisfiable core [2023-12-25 06:08:32,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:08:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1529148 backedges. 0 proven. 486336 refuted. 0 times theorem prover too weak. 1042812 trivial. 0 not checked. [2023-12-25 06:08:35,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:09:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1529148 backedges. 22820 proven. 466417 refuted. 0 times theorem prover too weak. 1039911 trivial. 0 not checked. [2023-12-25 06:09:19,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:09:19,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281586099] [2023-12-25 06:09:19,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281586099] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:09:19,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:09:19,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 69] total 87 [2023-12-25 06:09:19,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424926386] [2023-12-25 06:09:19,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:09:19,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2023-12-25 06:09:19,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:09:19,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2023-12-25 06:09:19,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=846, Invalid=6636, Unknown=0, NotChecked=0, Total=7482 [2023-12-25 06:09:19,258 INFO L87 Difference]: Start difference. First operand 147 states and 251 transitions. Second operand has 87 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 29 states have internal predecessors, (72), 23 states have call successors, (24), 1 states have call predecessors, (24), 25 states have return successors, (58), 58 states have call predecessors, (58), 23 states have call successors, (58) [2023-12-25 06:09:21,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:09:21,375 INFO L93 Difference]: Finished difference Result 174 states and 337 transitions. [2023-12-25 06:09:21,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-25 06:09:21,375 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 29 states have internal predecessors, (72), 23 states have call successors, (24), 1 states have call predecessors, (24), 25 states have return successors, (58), 58 states have call predecessors, (58), 23 states have call successors, (58) Word has length 4755 [2023-12-25 06:09:21,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:09:21,380 INFO L225 Difference]: With dead ends: 174 [2023-12-25 06:09:21,380 INFO L226 Difference]: Without dead ends: 168 [2023-12-25 06:09:21,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9517 GetRequests, 9411 SyntacticMatches, 12 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2204 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1034, Invalid=8086, Unknown=0, NotChecked=0, Total=9120 [2023-12-25 06:09:21,381 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:09:21,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1884 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 06:09:21,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-25 06:09:21,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 163. [2023-12-25 06:09:21,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 106 states have (on average 1.009433962264151) internal successors, (107), 105 states have internal predecessors, (107), 37 states have call successors, (37), 22 states have call predecessors, (37), 19 states have return successors, (180), 35 states have call predecessors, (180), 37 states have call successors, (180) [2023-12-25 06:09:21,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 324 transitions. [2023-12-25 06:09:21,400 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 324 transitions. Word has length 4755 [2023-12-25 06:09:21,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:09:21,402 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 324 transitions. [2023-12-25 06:09:21,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 29 states have internal predecessors, (72), 23 states have call successors, (24), 1 states have call predecessors, (24), 25 states have return successors, (58), 58 states have call predecessors, (58), 23 states have call successors, (58) [2023-12-25 06:09:21,402 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 324 transitions. [2023-12-25 06:09:21,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9513 [2023-12-25 06:09:21,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:09:21,850 INFO L195 NwaCegarLoop]: trace histogram [1507, 1507, 1219, 753, 753, 753, 753, 753, 753, 466, 288, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:09:21,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-25 06:09:22,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:09:22,051 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:09:22,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:09:22,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1072313773, now seen corresponding path program 15 times [2023-12-25 06:09:22,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:09:22,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140871280] [2023-12-25 06:09:22,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:09:22,057 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 06:09:22,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:09:22,058 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:09:22,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-25 06:11:42,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 767 check-sat command(s) [2023-12-25 06:11:42,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:11:42,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 7687 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-25 06:11:42,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:11:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 6130839 backedges. 59220 proven. 98761 refuted. 0 times theorem prover too weak. 5972858 trivial. 0 not checked. [2023-12-25 06:11:42,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:12:06,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6130839 backedges. 59243 proven. 99272 refuted. 0 times theorem prover too weak. 5972324 trivial. 0 not checked. [2023-12-25 06:12:06,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:12:06,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140871280] [2023-12-25 06:12:06,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140871280] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:12:06,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:12:06,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 31] total 33 [2023-12-25 06:12:06,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019344313] [2023-12-25 06:12:06,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:12:06,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-25 06:12:06,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:12:06,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-25 06:12:06,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 06:12:06,020 INFO L87 Difference]: Start difference. First operand 163 states and 324 transitions. Second operand has 33 states, 31 states have (on average 2.806451612903226) internal successors, (87), 31 states have internal predecessors, (87), 30 states have call successors, (39), 1 states have call predecessors, (39), 16 states have return successors, (63), 24 states have call predecessors, (63), 30 states have call successors, (63) [2023-12-25 06:12:07,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:12:07,050 INFO L93 Difference]: Finished difference Result 380 states and 981 transitions. [2023-12-25 06:12:07,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-25 06:12:07,051 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.806451612903226) internal successors, (87), 31 states have internal predecessors, (87), 30 states have call successors, (39), 1 states have call predecessors, (39), 16 states have return successors, (63), 24 states have call predecessors, (63), 30 states have call successors, (63) Word has length 9512 [2023-12-25 06:12:07,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:12:07,064 INFO L225 Difference]: With dead ends: 380 [2023-12-25 06:12:07,064 INFO L226 Difference]: Without dead ends: 220 [2023-12-25 06:12:07,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19039 GetRequests, 18991 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=509, Invalid=1941, Unknown=0, NotChecked=0, Total=2450 [2023-12-25 06:12:07,066 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 212 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:12:07,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 473 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:12:07,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-25 06:12:07,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 171. [2023-12-25 06:12:07,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 111 states have (on average 1.009009009009009) internal successors, (112), 110 states have internal predecessors, (112), 39 states have call successors, (39), 23 states have call predecessors, (39), 20 states have return successors, (192), 37 states have call predecessors, (192), 39 states have call successors, (192) [2023-12-25 06:12:07,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 343 transitions. [2023-12-25 06:12:07,089 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 343 transitions. Word has length 9512 [2023-12-25 06:12:07,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:12:07,091 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 343 transitions. [2023-12-25 06:12:07,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.806451612903226) internal successors, (87), 31 states have internal predecessors, (87), 30 states have call successors, (39), 1 states have call predecessors, (39), 16 states have return successors, (63), 24 states have call predecessors, (63), 30 states have call successors, (63) [2023-12-25 06:12:07,091 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 343 transitions. [2023-12-25 06:12:08,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12453 [2023-12-25 06:12:08,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:12:08,039 INFO L195 NwaCegarLoop]: trace histogram [1973, 1973, 1596, 986, 986, 986, 986, 986, 986, 610, 377, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:12:08,109 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 (19)] Ended with exit code 0 [2023-12-25 06:12:08,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:12:08,240 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:12:08,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:12:08,242 INFO L85 PathProgramCache]: Analyzing trace with hash 339606689, now seen corresponding path program 16 times [2023-12-25 06:12:08,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:12:08,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451181160] [2023-12-25 06:12:08,249 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:12:08,250 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 06:12:08,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:12:08,251 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:12:08,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-25 06:16:25,399 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:16:25,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:16:25,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 17397 conjuncts, 3948 conjunts are in the unsatisfiable core [2023-12-25 06:16:25,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:16:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 10511137 backedges. 0 proven. 3342975 refuted. 0 times theorem prover too weak. 7168162 trivial. 0 not checked. [2023-12-25 06:16:34,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:18:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10511137 backedges. 71946 proven. 3278713 refuted. 0 times theorem prover too weak. 7160478 trivial. 0 not checked. [2023-12-25 06:18:44,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:18:44,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451181160] [2023-12-25 06:18:44,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451181160] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:18:44,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:18:44,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 81] total 101 [2023-12-25 06:18:44,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180957982] [2023-12-25 06:18:44,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:18:44,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2023-12-25 06:18:44,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:18:44,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2023-12-25 06:18:44,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=8970, Unknown=0, NotChecked=0, Total=10100 [2023-12-25 06:18:44,600 INFO L87 Difference]: Start difference. First operand 171 states and 343 transitions. Second operand has 101 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 33 states have internal predecessors, (82), 27 states have call successors, (28), 1 states have call predecessors, (28), 29 states have return successors, (68), 68 states have call predecessors, (68), 27 states have call successors, (68) [2023-12-25 06:18:50,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:18:50,170 INFO L93 Difference]: Finished difference Result 237 states and 619 transitions. [2023-12-25 06:18:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-25 06:18:50,171 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 33 states have internal predecessors, (82), 27 states have call successors, (28), 1 states have call predecessors, (28), 29 states have return successors, (68), 68 states have call predecessors, (68), 27 states have call successors, (68) Word has length 12452 [2023-12-25 06:18:50,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:18:50,185 INFO L225 Difference]: With dead ends: 237 [2023-12-25 06:18:50,185 INFO L226 Difference]: Without dead ends: 231 [2023-12-25 06:18:50,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24921 GetRequests, 24789 SyntacticMatches, 14 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3397 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=1677, Invalid=12603, Unknown=0, NotChecked=0, Total=14280 [2023-12-25 06:18:50,189 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 2616 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:18:50,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2687 Invalid, 2265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-25 06:18:50,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-12-25 06:18:50,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 205. [2023-12-25 06:18:50,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 129 states have (on average 1.0077519379844961) internal successors, (130), 128 states have internal predecessors, (130), 46 states have call successors, (46), 23 states have call predecessors, (46), 29 states have return successors, (363), 53 states have call predecessors, (363), 46 states have call successors, (363) [2023-12-25 06:18:50,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 539 transitions. [2023-12-25 06:18:50,228 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 539 transitions. Word has length 12452 [2023-12-25 06:18:50,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:18:50,232 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 539 transitions. [2023-12-25 06:18:50,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 33 states have internal predecessors, (82), 27 states have call successors, (28), 1 states have call predecessors, (28), 29 states have return successors, (68), 68 states have call predecessors, (68), 27 states have call successors, (68) [2023-12-25 06:18:50,233 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 539 transitions. [2023-12-25 06:18:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30787 [2023-12-25 06:18:55,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:18:55,097 INFO L195 NwaCegarLoop]: trace histogram [4879, 4879, 3947, 2439, 2439, 2439, 2439, 2439, 2439, 1508, 932, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:18:55,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-25 06:18:55,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:18:55,312 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:18:55,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:18:55,316 INFO L85 PathProgramCache]: Analyzing trace with hash -233718003, now seen corresponding path program 17 times [2023-12-25 06:18:55,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:18:55,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121550845] [2023-12-25 06:18:55,339 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:18:55,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:18:55,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:18:55,340 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:18:55,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process Received shutdown request... [2023-12-25 06:19:15,928 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 06:19:15,940 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 06:19:16,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-25 06:19:17,017 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-25 06:19:17,038 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 06:19:17,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-25 06:19:17,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:19:17,239 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 30787 with TraceHistMax 4879,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1121550845] and IpTcStrategyModuleCvc4 [597473571]. [2023-12-25 06:19:17,243 INFO L445 BasicCegarLoop]: Path program histogram: [17, 1, 1, 1] [2023-12-25 06:19:17,245 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 06:19:17,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 06:19:17 BoogieIcfgContainer [2023-12-25 06:19:17,247 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 06:19:17,247 INFO L158 Benchmark]: Toolchain (without parser) took 829096.87ms. Allocated memory was 326.1MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 272.4MB in the beginning and 629.5MB in the end (delta: -357.1MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-25 06:19:17,247 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 248.5MB. Free memory is still 196.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 06:19:17,251 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.31ms. Allocated memory is still 326.1MB. Free memory was 272.2MB in the beginning and 261.4MB in the end (delta: 10.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 06:19:17,252 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.37ms. Allocated memory is still 326.1MB. Free memory was 261.4MB in the beginning and 259.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 06:19:17,252 INFO L158 Benchmark]: Boogie Preprocessor took 26.98ms. Allocated memory is still 326.1MB. Free memory was 259.8MB in the beginning and 258.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 06:19:17,253 INFO L158 Benchmark]: RCFGBuilder took 310.20ms. Allocated memory is still 326.1MB. Free memory was 258.0MB in the beginning and 247.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-25 06:19:17,253 INFO L158 Benchmark]: TraceAbstraction took 828513.17ms. Allocated memory was 326.1MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 246.8MB in the beginning and 629.5MB in the end (delta: -382.8MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-25 06:19:17,254 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 248.5MB. Free memory is still 196.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.31ms. Allocated memory is still 326.1MB. Free memory was 272.2MB in the beginning and 261.4MB in the end (delta: 10.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.37ms. Allocated memory is still 326.1MB. Free memory was 261.4MB in the beginning and 259.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.98ms. Allocated memory is still 326.1MB. Free memory was 259.8MB in the beginning and 258.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 310.20ms. Allocated memory is still 326.1MB. Free memory was 258.0MB in the beginning and 247.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 828513.17ms. Allocated memory was 326.1MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 246.8MB in the beginning and 629.5MB in the end (delta: -382.8MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 36]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 36). Cancelled while NwaCegarLoop was analyzing trace of length 30787 with TraceHistMax 4879,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1121550845] and IpTcStrategyModuleCvc4 [597473571]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 828.5s, OverallIterations: 20, TraceHistogramMax: 4879, PathProgramHistogramMax: 17, EmptinessCheckTime: 6.7s, AutomataDifference: 26.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1968 SdHoareTripleChecker+Valid, 11.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1882 mSDsluCounter, 10060 SdHoareTripleChecker+Invalid, 9.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9385 mSDsCounter, 2484 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15204 IncrementalHoareTripleChecker+Invalid, 17688 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2484 mSolverCounterUnsat, 675 mSDtfsCounter, 15204 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88204 GetRequests, 87273 SyntacticMatches, 54 SemanticMatches, 877 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13220 ImplicationChecksByTransitivity, 40.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=205occurred in iteration=19, InterpolantAutomatonStates: 572, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 19 MinimizatonAttempts, 446 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.9s SsaConstructionTime, 471.1s SatisfiabilityAnalysisTime, 293.2s InterpolantComputationTime, 44019 NumberOfCodeBlocks, 36563 NumberOfCodeBlocksAsserted, 1346 NumberOfCheckSat, 87960 ConstructedInterpolants, 0 QuantifiedInterpolants, 145845 SizeOfPredicates, 144 NumberOfNonLiveVariables, 51243 ConjunctsInSsa, 6615 ConjunctsInUnsatCore, 35 InterpolantComputations, 3 PerfectInterpolantSequences, 35952434/44152476 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown